Quiz Chapters 1 - 15

Which DHCP messages are discarded from interfaces that are configured as untrusted? Ack Request Offer Discover

Ack Offer

Which two OSPF states could a device be in when in normal operation? 2-Way Established Full Init

2-Way Full

What two pieces of route information are advertised by distance vector routing protocols to neighbors? (Choose two.) A supported interface list A next hop device A network topology A metric

A next hop device A metric

What is the default maximum number of hops that eBGP neighbors can exist away from each other? A) 1 B) Unlimited C) 2 D) 4

A) 1

Refer to the figure. Which of the displayed entries in the topology table is the EIGRP successor, and what is its FD? A) 10.10.10.10; 33,280 B) 10.10.10.10; 30,720 C) 10.10.10.2; 28,160 D) 10.10.10.2; 56,320

A) 10.10.10.10; 33,280

Refer to the figure. Which of the displayed entries in the topology table is the EIGRP feasible successor, and what is its FD? A) 10.10.10.10; 56,320 B) 10.10.10.2; 33,280 not C) 10.10.10.10; 28,160 D) 10.10.10.2; 30,720

A) 10.10.10.10; 56,320

What default reference bandwidth does OSPF use when calculating the metric? A) 100 Mbps B) 100 Gbps C) 10 Mbps D) 1 Gbps

A) 100 Mbps

What is the default hold interval EIGRP uses on Ethernet interfaces? A) 15 seconds B) 5 seconds C) 60 seconds D) 10 seconds

A) 15 seconds

Refer to the figure. Based on the information shown in the figure, how many neighbors would be displayed if the show ip eigrp neighbor command were issued? A) 2 B) 4 C) 6 D) 8

A) 2

Refer to the figure. What minimum variance multiplier would be used to include both routes into the routing table? A) 2 B) 4 C) 8 D) 3

A) 2

When influencing the STP priority by using the root command, what will the priority of the local switch become if all other switches have their default priorities? A) 24,576 B) 32,768 C) 4096 D) 8192

A) 24,576

Which version of VTP is not supported on Cisco switches? A) 2c B) 1 C) 2 D) 3

A) 2c

Refer to the figure. Assuming all the interfaces are using their highest possible bandwidth, and each interface uses the default delay setting of 100 microseconds, what would the EIGRP metric be from R3 to PC1's network? A) 7680 B) 30,720 C) 53,760 D) 76,800

A) 76800

RSTP adds some concepts to STP that enable ports to be used for a role if another port on the same switch fails. Which of the following statements correctly describe a port role that is waiting to take over for another port role? (Choose two answers.) A) A backup port waits to become a designated port. B) A backup port waits to become a root port. C) An alternate port waits to become a designated port. D) An alternate port waits to become a root port.

A) A backup port waits to become a designated port. D) An alternate port waits to become a root port.

What term does OSPF use to reference a router that has interfaces in more than one area? A) ABR B) Backbone C) ASBR D) Internal

A) ABR

Which BGP neighbor state indicates that a TCP connection has been completed but no BGP messages have been sent yet? A) Active B) Connect C) Established D) OpenSent

A) Active

Which of the following port states are used by 802.1w RSTP but not by 802.1D STP? A) Discarding B) Forwarding C) Learning D) Alternate

A) Discarding

A classful network in which packets sent between at least one pair of subnets must pass through subnets in a different classful network describes a ________ network. A) Discontiguous B) Contiguous C) Discontinuous D) Continuous

A) Discontiguous

Which protocol is used between the IEEE 802.1x supplicant and the authenticator? A) EAPoL B) SSL C) RADIUS D) PPP

A) EAPoL

________ combines multiple parallel segments of equal speed between the same pair of switches. A) EtherChannel B) STP C) LACP D) Load balancing

A) EtherChannel

Switch SW1 sends a frame to switch SW2 using 802.1Q trunking. Which of the answers describes how SW1 changes or adds to the Ethernet frame before forwarding the frame to SW2? A) Inserts a 4-byte header and does not change the MAC addresses B) Inserts a 4-byte header and does change the MAC addresses C) Encapsulates the original frame behind an entirely-new Ethernet header D) None of the other answers are correct

A) Inserts a 4-byte header and does not change the MAC addresses

If spanning tree is disabled, what are the potential issues with a redundant Layer 2 network design? A) MAC database instability B) Duplicate IP addresses C) Multiple (duplicate) frames being seen D) TTL expiring E) Broadcast storms

A) MAC database instability C) Multiple (duplicate) frames being seen E) Broadcast storms

After an EIGRP router sees a Hello from a neighbor, what parameter(s) does the router not check before establishing a neighbor relationship? A) Must be using the same hello timer and dead timer B) Must be on same subnet C) Must be using the same AS number D) The source IP address used by the neighbor's Hello must be in the same subnet.

A) Must be using the same hello timer and dead timer

Which EtherChannel protocol is being used if the channel-group 10 mode on command is configured on an interface? A) None B) PACP C) PAgP D) LACP

A) None

Which BGP neighbor state indicates that a TCP connection has been completed and the local router has sent the first message to establish the BGP neighbor relationship? A) OpenSent B) Active C) Established D) Connect

A) OpenSent

Which Cisco STP mode extends on the IEEE 802.1w standard by providing an STP instance per VLAN? A) RPVST+ B) PVST+ C) CST D) MST

A) RPVST+

The only switch on a LAN that has all designated interfaces is the ________ switch. A) Root B) Primary C) Forwarding D) Main

A) Root

What distance vector (DV) feature tells the routing protocol to not advertise routes out the same interface on which the route was learned? A) Split horizon B) Reverse telnet C) Poison reverse D) Passive interface

A) Split horizon

Refer to the diagram; which commands are used to configure the connection connecting to host C? A) Host C's IP phone will be configured with an access VLAN of 10. B) The switchport access vlan 5 command is configured on SW2's Fa0/1 interface. C) Host C's IP phone will be configured its pass-through switchport with an access VLAN of 20. D) The switchport access vlan 10 command is configured on SW2's Fa0/1 interface. E) The switchport voice vlan 5 command is configured on SW2's Fa0/1 interface. F) The switchport voice vlan 10 command is configured on SW2's Fa0/1 interface.

NOT CORRECT C) Host C's IP phone will be configured its pass-through switchport with an access VLAN of 20. D) The switchport access vlan 10 command is configured on SW2's Fa0/1 interface. E) The switchport voice vlan 5 command is configured on SW2's Fa0/1 interface.

Which VTP (v1 and v2) modes support the use of the extended range of VLANs? Server Client Off Transparent

Off Transparent

Refer to the figures. What information can be derived from the output of the show ip ospf neighbor command? The neighbor with an RID of 2.2.2.2 is the current DR. R1 is the current DR. The neighbor with an RID of 4.4.4.4 will become the DR if the current DR fails. The neighbor with an RID of 3.3.3.3 is the current DR.

R1 is the current DR. The neighbor with an RID of 4.4.4.4 will become the DR if the current DR fails.

Which options are valid reasons to implement VLANs on a network? Reduces the STP workload Increases the number of broadcast domains Reduces the number of collisions on a network Decreases the number of broadcast domains

Reduces the STP workload Increases the number of broadcast domains

Which options are true regarding EIGRP neighborship requirements? Routers must be in the same Process-ID. Routers must be in the same ASN. Routers must have matching K-values. Routers must be in a common IPv4 subnet. Routers must have matching timers. Routers must be in the same area.

Routers must be in the same ASN. Routers must have matching K-values. Routers must be in a common IPv4 subnet.

Which options are true regarding OSPF neighborship requirements? Routers must have matching K-values. Routers must be in the same area. Routers must be in the same Process-ID. Routers must be in the same ASN. Routers must be in a common IPv4 subnet. Routers must have matching timers.

Routers must be in the same area. Routers must be in a common IPv4 subnet. Routers must have matching timers.

Which of the following answers describes a method to remove the need for spanning tree in a two switch network? A) No Layer 2 parallel paths in the network B) Using EtherChannel to combine multiple parallel segments into one logical link C) Multiple Layer 2 paths, but only use two switches D) Using more trunks rather than access ports E) Use Rapid Spanning Tree

Explanation: STP would not be needed if there were no redundant parallel Layer 2 paths in the network. One way of removing parallel paths is to make them into a single logical link, as with EtherChannel. If there were only two switches, and they had parallel paths, STP would be needed to prevent the Layer 2 loop. Rapid Spanning Tree is still spanning tree, and that alone would not remove the need for it. Parallel paths can be created over access or trunk ports, and that alone would not remove the need for spanning tree.

Assuming all default STP settings, which of SW3's ports will become its root port, and what will its root cost be? A) Fa0/2, 19 B) Gi0/1, 4 C) Gi0/1, 8 D) Fa0/2, 8

Explanation: Using the default port costs, a Gigabit Ethernet port will have a cost of 4 and a Fast Ethernet port will have a cost of 19. SW3 will have two interfaces that can be used to forward traffic to the root switch (SW4): through its Gi0/1 interface via SW1, which results in a total cost of 8, or via its Fa0/2 interface, which results in a total cost of 19. It will select the option with the lowest cost, so it will select its Gi0/1 interface as its root port with a cost of 8.

What are the two different EtherChannel protocols supported by most modern Cisco switches? PPTP LACP PAgP LAPB

LACP PAgP

Historically, VTP supports which range of VLANs? A) 1-4094 B) 1-1005 C) 1-1001 D) 1-512

B) 1-1005

Refer to the figure. Which route shown will be used to forward traffic to the 172.16.0.32/28 network, and with what metric? A) 10.10.10.10; 28,160 B) 10.10.10.2; 33,280 C) 10.10.10.10; 56,320 D) 10.10.10.2; 30,720

B) 10.10.10.2; 33,280

Refer to the figure. Assuming what is shown is the extent of the OSPF configuration on a device, what is the RID of the local OSPF process? A) 172.16.0.1 B) 172.16.1.2 C) 172.16.1.1 D) 10.10.10.1

B) 172.16.1.2

What is the default IEEE STP port cost for a 100 Mbps Ethernet interface? A) 4 B) 19 C) 100 D) 10

B) 19

What is the default IEEE STP port cost for a 10 Gbps Ethernet interface? A) 4 B) 2 C) 1 D) 10

B) 2

What is the default STP hello BPDU interval? A) 10 seconds B) 2 seconds C) 30 seconds D) 5 seconds

B) 2 seconds

When a pair of OSPF neighbors has reached the ________ state, they can exchange their LSDB with each other. A) Down B) 2-way C) Loading D) Init

B) 2-way

Which IP multicast address is used by OSPF to communicate with all OSPF speaking routers? A) 224.0.0.6 B) 224.0.0.5 C) 224.0.0.10 D) 224.0.0.2

B) 224.0.0.5

Each OSPF router that originates an LSA is responsible for reflooding it every ________. A) 15 minutes B) 30 minutes C) 120 minutes D) 60 minutes

B) 30 minutes

What is the default base STP priority used on a Cisco switch? A) 16,384 B) 32,768 C) 8192 D) 1024

B) 32,768

Refer to the figure. Based on the information shown in the figure, how many neighbors would be displayed if the show ip eigrp neighbor command were issued? A) 2 B) 4 C) 6 D) 8

B) 4

What is the size of the additional tag that is included within each frame when using IEEE 802.1Q? A) 4 bits B) 4 bytes C) 2 bytes D) 12 bits

B) 4 bytes

Which EtherChannel mode should be used if the intention is to have the targeted interfaces initiate a connection via LACP? A) Passive mode B) Active mode C) Desirable mode D) Auto mode

B) Active mode

Which of the following IEEE 802.1D port states are stable states used when STP has completed convergence? (Choose two answers.) A) Listening B) Blocking C) Discarding D) Forwarding E) Learning

B) Blocking D) Forwarding

The STP root switch is the switch with the lowest numeric value for the ________. A) Router ID B) Bridge ID C) Cost D) Primary ID

B) Bridge ID

What is the term that is used to reference other Cisco technologies that connect together distribution and core layer switches and present them as a single switch? A) Switch Distributor B) Chassis Aggregation C) Virtual Switch Chassis D) Switch Interconnection

B) Chassis Aggregation

What type of OSPF packet is used to list the LSAs that are known by a device? A) LSA B) DD C) LSU D) LSR

B) DD

Which dynamic trunking mode should be configured if the intention is to have it actively attempt to form a trunk with a connected switch? A) Auto B) Desirable C) Active D) Dynamic

B) Desirable

What is the difference between EtherChannel auto and desirable modes? A) Desirable mode will not function and put the port into errdisable mode unless both sides of the link are in desirable. B) Desirable will always initiate autonegotiation, whereas auto will not. C) Auto mode will not function and put the port into errdisable mode unless both sides of the link are in auto. D) Auto will always try to negotiate to an access port first before trying other modes. E) Auto will always initiate autonegotiation, whereas desirable will not.

B) Desirable will always initiate autonegotiation, whereas auto will not.

When viewing the Cisco IOS routing table with the show ip route command, what code is used to denote OSPF routes that are not within the local area? A) E1 B) IA C) E2 D) E

B) IA

In which OSPF state would a neighbor be if it has learned of a neighbor's existence but has not yet seen its own RID in an LSDB update? A) 2-way B) Init C) Loading D) Down

B) Init

Which of the following are transitory IEEE 802.1D port states used only during the process of STP convergence A) Discarding B) Listening C) Forwarding D) Learning E) Blocking

B) Listening D) Learning

Which routing protocols are not considered Distance Vector? A) RIP B) OSPF C) IGRP D) EIGRP

B) OSPF

Which EIGRP message is used to locate a potential new path when all of the entries existing in its topology table for a specific prefix fail? A) Inquire B) Query C) Request D) Discover

B) Query

A switch's ________ port is its interface through which it has the least STP cost to reach the root switch. A) Forwarding B) Root C) Designated D) Learning

B) Root

The diagram of a small switched network, with all switches acting as layer 2 switches in VLAN 10. The diagram notes the switch chosen as root switch, with each root port noted with the letters RP and each designated port noted with the letters DP. All three switches use RSTP, and they might also have other RSTP configuration settings not noted in the question. Which of the following statements about RSTP states and roles in this network are true? A) SW1's port Gi0/1 might be in a backup port role. B) SW2's port Gi0/1 must be in an alternate port role. C) SW1's port Gi0/1 might be in an alternate port role. D) SW2's port Gi0/1 must be in a backup port role.

B) SW2's port Gi0/1 must be in an alternate port role.

What is the correct order for the following steps in the spanning-tree algorithm? A: Elect a designated port for each segment. B: Elect a root port for each nonroot switch. C: Root ports and designated ports transition to the forwarding state. D: Elect a root bridge. A) Steps D, C, B, A B) Steps D, B, A, C C) Steps A, C, B, D D) Steps A, C, D, B

B) Steps D, B, A, C

When there is a tie between which port should become the root port, what is the first tie breaker? A) The lowest port priority B) The lowest BID C) The highest port priority D) The highest BID

B) The lowest BID

Switch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ________, except the switchport in which the frame arrived. A) Area B) VLAN C) Management domain D) Process

B) VLAN

Which Cisco IOS command is required first before configuring any additional AAA configuration? A) aaa session enable B) aaa new-model C) aaa enable D) aaa new-configuration

B) aaa new-model

Which single OSPF network statement will correctly include all the interfaces on a device whose IP addresses only begin with a 10.10.8, 10.10.9, 10.10.10, or 10.10.11? A) network 10.10.8.0 0.0.7.255 area 0 B) network 10.10.8.0 0.0.3.255 area 0 C) network 10.10.0.0 0.0.0.255 area 0 D) network 10.10.0.0 0.0.7.255 area 0

B) network 10.10.8.0 0.0.3.255 area 0

Which Cisco IOS command would inject the network configured on the Gi0/2 interface into the local BGP ASN? A) network 192.17.85.0 B) network 192.17.85.32 mask 255.255.255.240 C) network 192.17.85.32 D) network 192.17.85.32 mask 255.255.255.224

B) network 192.17.85.32 mask 255.255.255.240

Which Cisco IOS command can be used to determine the current operating trunks on a switch? A) show switch trunk B) show interfaces trunk C) show switch switchport D) show interfaces

B) show interfaces trunk

Which Cisco IOS command is used to display the BGP table? A) show ip bgp table B) show ip bgp C) show ip bgp database D) show ip bgp summary

B) show ip bgp

Which Cisco IOS command can be used to display all TCP connections that terminate on the local router? A) show sessions B) show tcp brief C) show connections D) show tcp connections

B) show tcp brief

What single Cisco IOS command can be issued to ensure that a specific switch within the network becomes the STP root switch? A) spanning-tree priority root B) spanning-tree vlan vlan-id root primary C) spanning-tree root tvlan vlan-id primary D) spanning-tree root

B) spanning-tree vlan vlan-id root primary

What metric components does EIGRP use when using default metric calculation? Load Bandwidth Reliability Delay

Bandwidth Delay

In what two different ways can a VLAN be associated with a specific MAC address to determine how a frame will be forwarded? By the VLAN tag of a frame on an outgoing trunk By the incoming interface By the outgoing interface By the VLAN tag of a frame on an incoming trunk

By the incoming interface By the VLAN tag of a frame on an incoming trunk

What VLANs are included within the normal range? A) 1-512 B) 1-256 C) 1-1005 D) 1-4094

C) 1-1005

What is the administrative distance of OSPF routes? A) 120 B) 90 C) 110 D) 115

C) 110

What default STP timer length is used for both the listening and learning states? A) 20 seconds B) 5 seconds C) 15 seconds D) 2 seconds

C) 15 seconds

If an interface was used for STP that supported speeds of 10 Mbps, 100 Mbps, and 1 Gbps and is currently operational with a speed of 100 Mbps, what STP port cost is used for the interface? A) 2 B) 100 C) 19 D) 4

C) 19

Imagine a switch with three configured VLANs. How many IP subnets are required, assuming that all hosts in all VLANs want to use TCP/IP? A) You cannot tell from the information provided. B) 2 C) 3 D) 0 E) 1

C) 3

Refer to the figure. Based on the STP port costs shown, which of S4's interfaces will become the root port? A) 2 B) 1 C) 3 D) None

C) 3

What is the maximum length of a FlexStack or FlexStack Plus cable? A) 5 meters B) 10 meters C) 3 meters D) 1 meter

C) 3 meters

In normal practice, what is the maximum number of VLANs that are supported on a higher-end Cisco switch using 802.1Q? A) 1005 B) 1000 C) 4094 D) 4096

C) 4094

What is the default Hello interval EIGRP uses on Ethernet interfaces? A) 60 seconds B) 15 seconds C) 5 seconds D) 10 seconds

C) 5 seconds

What is the difference between an FD and an RD in EIGRP? A) An FD is a networkwide metric, and an RD is a metric local to the router. B) An FD is reported by a neighbor, and an RD is the calculated route on the local EIGRP router. C) An RD is reported by a neighbor, and an FD is the calculated route on the local EIGRP router. D) An RD is a networkwide metric, and an FD is a metric local to the router.

C) An RD is reported by a neighbor, and an FD is the calculated route on the local EIGRP router.

In a LAN, which of the following terms best equates to the term VLAN? A) Single switch B) Collision domain C) Broadcast domain D) Subnet E) Trunk

C) Broadcast domain

PortFast enables you to set ports on your switch to be placed in a forwarding state once the host device is plugged in. What Cisco feature enables you to detect switches or any other networking devices that could cause problems on links with PortFast enabled? A) IEEE BPDU Guard B) BPDU Protect C) Cisco BPDU Guard D) PortGuard

C) Cisco BPDU Guard

Which VTP mode does not allow the CLI configuration of VLANs? A) Server B) Off C) Client D) Transparent

C) Client

What is the only way an engineer can alter the value of the bridge ID? A) Swap out the main switch network interface card B) Modify the main switch MAC address C) Configure the STP priority D) Configure the bridge ID under STP configuration mode

C) Configure the STP priority

Which IGP routing protocol has traditionally been Cisco proprietary? A) IS-IS B) RIP C) EIGRP D) OSPF

C) EIGRP

Which BGP neighbor state indicates that the neighborship has been established and that the devices can exchange Update messages? A) Connect B) Active C) Established D) OpenSent

C) Established

Which of the following RSTP port states have the same name and purpose as a port state in traditional 802.1D STP? (Choose two answers.) A) Discarding B) Blocking C) Forwarding D) Learning E) Listening

C) Forwarding D) Learning

What type of OSPF packet is used to actually send LSAs between neighbors? A) LSR B) DD C) LSU D) LSA

C) LSU

When viewing the show etherchannel summary command output, what does the 'S' signify in the output of 'Po1 (SD)'? A) Standby state B) Suspended state C) Layer 2 EtherChannel D) Layer 3 EtherChannel

C) Layer 2 EtherChannel

Refer to the diagram; assuming a default trunking configuration, what is the term that is used to reference the VLAN that will be used to transport the traffic between the hosts in the default VLAN? A) Default B) Basic C) Native D) Special

C) Native

What STP feature causes an interface to be placed in the forwarding state as soon as the interface is physically active? A) STP B) EtherChannel C) PortFast D) Root Guard

C) PortFast

Which of the following are functions provided by Spanning Tree Protocol? A) Uses TTL to control loops in the network B) Places a Layer 3 port into blocking state if it is a parallel (redundant) path that would cause a loop C) Prevents MAC table instability D) Prevents multiple copies of a single frame from being forwarded E) Prevents broadcast storms

C) Prevents MAC table instability D) Prevents multiple copies of a single frame from being forwarded E) Prevents broadcast storms

Which protocol does EIGRP use to exchange update messages? A) TCP B) RCTP C) RTP D) UDP

C) RTP

Four switches are connected together on a shared LAN. SW1 has a VTP configuration revision of 1, SW2 has a VTP configuration revision of 2, SW3 has a VTP configuration revision of 3, and SW4 has a VTP configuration revision of 4. Which switch's configuration will be preferred and sent updated on each of the other switches? A) SW1 B) SW2 C) SW4 D) SW3

C) SW4

Which of the following represents the total cost between the device forwarding a BPDU and the switch in STP that has the lowest BID? A) Sender's bridge ID B) Root bridge ID C) Sender's root cost D) Hello timer E) Forward delay

C) Sender's root cost

What is the label given to the switch in a stack that controls the rest of the other switches? A) Stack Controller B) Active Stack Controller C) Stack Master D) Active Stack Bridge

C) Stack Master

Which IEEE 802.1x component is contained within the client? A) Initiator B) Authenticator C) Supplicant D) Agent

C) Supplicant

The cumulative_path_delay variable used within the EIGRP metric formula is entered using what unit of measurement? A) Microseconds B) Tens of milliseconds C) Tens of microseconds D) Milliseconds

C) Tens of microseconds

Which of the following facts determines how often a nonroot bridge or switch sends an 802.1D STP Hello BPDU message? A) The switch reacts to BPDUs received from the root switch by sending another BPDU 2 seconds after receiving the root BPDU. B) The Hello timer as configured on that switch. C) The Hello timer as configured on the root switch. D) It is always every 2 seconds.

C) The Hello timer as configured on the root switch.

Which are true statements about STP PortFast mode? A) Special BPDUs are generated to notify the other switches that the port is an access port and any switches connected to it should cause the port to be disabled. B) It should be used on all switch uplink ports to speed convergence in case of a network failure. C) The port bypasses the normal STP startup process and enters forwarding mode immediately. D) It starts the generation of STP TCN BPDU generation in port up/down conditions.

C) The port bypasses the normal STP startup process and enters forwarding mode immediately.

When do EIGRP routers send full updates? A) Every 60 minutes B) When a router receives a TCN C) Upon startup D) When a router recalculates the SPF tree E) When an ASBR injects routes into the AS

C) Upon startup

Refer to the figure. What VLANs have been defined on the local switch and not shut down? A) VLAN 10 and 20 B) VLAN 1 through 4094 C) VLAN 1, 10, and 20 D) Not enough information

C) VLAN 1, 10, and 20

A switch has just arrived from Cisco. The switch has never been configured with any VLANs, but VTP has been disabled. An engineer configures the vlan 22 and name Hannahs-VLAN commands, and then exits configuration mode. Which of the following are true? (Choose two answers.) A) VLAN 22 does not exist in that switch until at least one interface is assigned to that VLAN B) VLAN 22 is not created by this process. C) VLAN 22 is listed in the output of the show running-config command. D) VLAN 22 is listed in the output of the show vlan brief command.

C) VLAN 22 is listed in the output of the show running-config command. D) VLAN 22 is listed in the output of the show vlan brief command.

Which Cisco IOS command would be used to enable an EtherChannel that utilized LACP and will automatically initiate a connection to the neighbor switch using a channel number of 10? A) channel-group 10 mode auto B) channel-group 10 mode on C) channel-group 10 mode active D) channel-group 10 mode desirable

C) channel-group 10 mode active

Which Cisco IOS command would be used to enable an EtherChannel that utilized PAgP and will automatically initiate a connection to the neighbor switch using a channel number of 10? A) channel-group 10 mode on B) channel-group 10 mode active C) channel-group 10 mode desirable D) channel-group 10 mode auto

C) channel-group 10 mode desirable

Which Cisco IOS command would enable a manual EtherChannel on a specific physical interface using group number 10? A) channel-group 10 mode auto B) channel-group 10 mode manual C) channel-group 10 mode on D) channel-group 10 mode active

C) channel-group 10 mode on

Which Cisco IOS debug command can be used to display whether EIGRP neighbors are having a problem establishing a neighborship because of an authentication failure? A) debug ip eigrp authentication B) debug ip eigrp C) debug eigrp packets D) debug eigrp authentication

C) debug eigrp packets

Which Cisco IOS command is used to advertise a default route into OSPF regardless of whether a default static route is configured? A) ospf advertise default-route permanent B) ospf default-route advertise always C) default-information originate always D) default-information originate

C) default-information originate always

Which Cisco IOS command is used to configure eBGP neighbors on a router? A) network network remote-as asn B) network network C) neighbor ip-address remote-as asn D) neighbor ip-address

C) neighbor ip-address remote-as asn

Which Cisco IOS command would be used to alter the source interface used for BGP communications? A) neighbor ip-address source-interface interface B) neighbor ip-address source interface C) neighbor ip-address update-source interface D) neighbor ip-address interface interface

C) neighbor ip-address update-source interface

Which OSPF network statement will correctly include all the interfaces on a device that begin with an IP address of 172.16.0.0/16? A) network 0.0.16.172 0.0.255.255 area 0 B) network 172.16.0.0 255.255.0.0 area 0 C) network 172.16.0.0 0.0.255.255 area 0 D) network 0.0.16.172 255.255.0.0 area 0

C) network 172.16.0.0 0.0.255.255 area 0

Which Cisco IOS command is used to add a prefix to the BGP table and have it advertised into the BGP network? A) ip bgp asn B) bgp network network C) network network [mask mask] D) bgp advertise-network network

C) network network [mask mask]

Which Cisco IOS command is used to alter the default behavior and configure all interfaces as passive? A) ip routing passive-interface B) ip routing passive enable C) passive-interface default D) passive-interface default disable

C) passive-interface default

Which Cisco IOS command can be used to display the current administrative and operational state of an interface? A) show interfaces B) show switchport interface C) show interfaces interface switchport D) show switchport detail

C) show interfaces interface switchport

Which Cisco IOS command is used to list information about the OSPF LSDB on a device? A) show ip ospf topology B) show ip ospf lsdb C) show ip ospf database D) show ip ospf lsa

C) show ip ospf database

Which Cisco IOS command is used to display the current OSPF Hello and dead intervals (other than show running-config)? A) show ip protocols B) show ip protocols interface C) show ip ospf interface D) show ip ospf interface brief

C) show ip ospf interface

Which Cisco IOS command lists a group of messages for each IPv4 routing protocol running on a router? A) show ip routing B) show ip route configuration C) show ip protocols D) show ip configuration

C) show ip protocols

Which Cisco IOS command would be used to display only the EIGRP routes that exist in the IP routing table? A) show route | eigrp B) show route eigrp C) show ip route eigrp D) show ip route | eigrp

C) show ip route eigrp

Which Cisco IOS command is used to confirm that two neighboring switches have their VTP databases synchronized? A) show vtp server B) show vtp database C) show vtp status D) show vtp configuration

C) show vtp status

Which Cisco IOS command would be used to override the default STP cost on an interface? A) spanning-tree vlan cost cost B) switchport cost cost C) spanning-tree cost cost D) switchport vlan cost cost

C) spanning-tree cost cost

Which Cisco IOS command is used to enable the use of the PortFast feature on a specific interface? A) spanning-tree bpdu portfast B) spanning-tree interface interface portfast C) spanning-tree portfast D) spanning-tree portfast enable

C) spanning-tree portfast

Which Cisco IOS command would be used to statically place an interface into Access mode? A) switchport mode access-port B) switchport access C) switchport mode access D) switchport access mode

C) switchport mode access

Which Cisco IOS command would control the VLAN that is assigned to frames received on a trunking interface that do not include an 802.1Q tag? A) switchport native trunk vlan vlan-id B) switchport native vlan vlan-id C) switchport trunk native vlan-id D) switchport trunk vlan vlan-id

C) switchport trunk native vlan-id

Which Cisco IOS command is used to configure a new TACACS+ server on a device? A) aaa server mode tacacs+ server-name B) aaa new server tacacs server-name C) tacacs server server-name D) aaa server tacacs+ server-name

C) tacacs server server-name

A classful routing protocol with autosummarization is running between R1 and R2. What will be IP routing entries in the R1 routing table for R2? Refer to the network diagram. A) 172.23.0.0 /22 B) 172.23.0.0 /20 C) 172.23.1.0/24, 172.23.2.0/24, 172.23.3.0/24 D) 172.23.0.0 /16

D) 172.23.0.0 /16

What is the default STP cost of an Ethernet interface that is operating at 100 Mbps? A) 4 B) 16 C) 25 D) 19

D) 19

What is the multicast address EIGRP devices use to exchange messages? A) 224.0.0.6 B) 224.0.0.9 C) 224.0.0.5 D) 224.0.0.10

D) 224.0.0.10

Refer to the figure. Assuming the Fa0/0 interfaces are each connected to a shared switch on the same VLAN, how many neighbors would be displayed on the output of the show ip eigrp neighbors command if it were run on R1? A) 2 B) 0 C) 1 D) 3

D) 3

Refer to the figure. Assuming all the interfaces are using their highest possible bandwidth, and each interface uses the default delay setting of 100 microseconds, what would be the EIGRP metric from R1 to PC2's network? A) 26,112 B) 76,800 C) 5145 D) 30,720

D) 30,720

Refer to the figure. What would be the EIGRP reported distance of the 172.16.0.32 route that would be advertised to R1's neighbors? A) Not knowable from this output B) 28.160 C) 33,280 D) 30,720

D) 30,720

By default, what is the maximum number of equal-cost OSPF routes that will be inserted into the routing table? A) 6 B) 1 C) 2 D) 4

D) 4

What default length is used for the OSPF dead interval? A) 20 seconds B) 120 seconds C) 40 seconds D) 4 times the Hello Interval

D) 4 times the Hello Interval

Which of the following bridge IDs wins election as root, assuming that the switches with these bridge IDs are in the same network? A) 4097:0200.2222.2222 B) 32769:0200.2222.2222 C) 40961:0200.1111.1111 D) 4097:0200.1111.1111 E) 32769:0200.1111.1111

D) 4097:0200.1111.1111

VTP messages are sent periodically every ________ minutes. A) 10 B) 30 C) 60 D) 5

D) 5

In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs? A) Dropping B) Learning C) Listening D) Blocking

D) Blocking

Refer to the figure. Which route shown will be used to forward traffic to the 10.10.10.4/30 network, and with what metric? A) 10.10.10.2; 30,720 B) Both; 28,160 C) 10.10.10.10; 30,720 D) Both; 30,720

D) Both; 30,720

DHCP Snooping state information is stored within the ________. A) DHCP Snooping Database B) DHCP State Table C) DHCP Snooping Table D) DHCP Binding Table

D) DHCP Binding Table

What is the name of the switch feature that can be enabled to monitor for unauthorized DHCP servers on a network? A) DHCP Agent B) DHCP Monitor C) DHCP Security D) DHCP Snooping

D) DHCP Snooping

The switch that has the lowest STP cost will become the ________ switch for a specific segment. A) Primary B) Forwarding C) Root D) Designated

D) Designated

A(n) ________ is a routing protocol that was designed and intended for use inside a single autonomous system. A) EGP B) BGP C) IXR D) IGP

D) IGP

If limited to the output of the show vtp status command, which part of the output could be used to verify if the VTP password matches between two switches? A) Authentication B) Password C) SHA Hash D) MD5 Hash

D) MD5 Hash

On which switch would you always find a root port? A) Switch that has forwarding ports B) Root switch C) Switch that has a designated port D) Nonroot switch E) Switch that does not have any blocking ports

D) Nonroot switch

What is one way in which STP protects a redundant Ethernet network? A) Makes sure DTP VLANs do not have frame collisions B) Reduces collision domain size C) Identifies and deletes invalid MAC to IP address mapping D) Protects against frames looping the Layer 2 domains

D) Protects against frames looping the Layer 2 domains

What is the name of the revised and improved version of STP that has been standardized and is typically deployed on production networks? A) Accelerated STP B) CSTP C) SSTP D) RSTP

D) RSTP

What is the name of the field in the STP hello BPDU that contains the bridge ID of the switch that the sender of the BPDU believes is the root switch? A) Designated bridge ID B) STP primary ID C) STP core ID D) Root bridge ID

D) Root bridge ID

Which protocol is used by BGP to communicate between routers? A) RTP B) ICMP C) UDP D) TCP

D) TCP

An STP topology with three switches has one link between each pair of switches. Which answer best describes the primary decision point as to which non-root switch has a designated port on the link between switches, and which does not? A) The device with the lowest BID would always become designated, and the other switch would block. B) The device with the highest BID would become designated, and the other switch would block. C) The switch with the lowest priority setting would become designated, and the other switch would block. D) The switch with the lowest root cost would become designated, and the other switch would block. E) The switch with the highest root cost would become designated, and the other switch would block.

D) The switch with the lowest root cost would become designated, and the other switch would block.

What is the name of the VTP feature that, when enabled, automatically prevents the forwarding of traffic from specific VLANs to another switch if it doesn't have any access ports in the specific VLAN? A) VTP Filtering B) Split Horizon C) VTP Trimming D) VTP Pruning

D) VTP Pruning

Which Cisco IOS command is used to configure the OSPF reference bandwidth setting? A) ip ospf reference bandwidth speed B) ospf reference-bandwidth speed C) reference-bandwidth speed D) auto-cost reference-bandwidth speed

D) auto-cost reference-bandwidth speed

Which Cisco IOS command would be used to enable BGP automatic summarization? A) No such command exists B) neighbor ip-address peer summary C) neighbor ip-address auto-summary D) auto-summary

D) auto-summary

What is the best Cisco IOS debug command to find whether there is an OSPF timer mismatch? A) debug ip ospf B) debug ip ospf spf C) debug ip ospf adj D) debug ip ospf hello

D) debug ip ospf hello

Which Cisco IOS command is used to enable OSPF on an interface using interface configuration mode commands? A) ospf area area B) ip ospf area C) ospf process-id area area D) ip ospf process-id area area

D) ip ospf process-id area area

Which Cisco IOS method would be used to configure AAA authentication using a device's user database? A) login B) username C) database D) local

D) local

Which Cisco IOS command is used to alter the maximum number of equal-cost OSPF routes that are inserted into the routing table? A) ospf maximum-paths max B) ospf-paths max C) ospf load-balance max D) maximum-paths max

D) maximum-paths max

Which Cisco IOS command can be used to alter the maximum number of hops that eBGP neighbors can exist away from each other? A) neighbor ip-address multihop hop-count B) bgp maximum-hops hops C) bgp multihop hop-count D) neighbor ip-address ebgp-multihop hop-count

D) neighbor ip-address ebgp-multihop hop-count

Which Cisco IOS command would inject the network configured on the Gi0/1 interface into the local BGP ASN? A) network 192.123.45.0 B) network 192.168.1.224 mask 255.255.255.248 C) network 192.168.128.0 D) network 192.123.45.128 mask 255.255.255.128

D) network 192.123.45.128 mask 255.255.255.128

Which Cisco IOS command is used to prevent a configured OSPF interface from forming a neighborship with any potential neighbors? A) ip ospf process-id no-advertise B) advertise interface disable C) ip ospf process-id passive D) passive-interface interface

D) passive-interface interface

Where does a VTP server or client store the interface voice VLAN configuration? A) vtp.dat B) nvram C) vlan.dat D) running-config

D) running-config

What is the Cisco IOS command that can be used to display the current administrative and operational mode of a switch port? A) show switchport interface interface B) show interfaces interface C) show switchport interface D) show interfaces interface switchport

D) show interfaces interface switchport

Which Cisco IOS command is used to determine the VLANs that have been enabled for transport over a specific trunk? A) show vlan trunk B) show trunks C) show switchport trunk D) show interfaces trunk

D) show interfaces trunk

Which command lists the interfaces configured for EIGRP and their corresponding interfaces? A) show ip protocols eigrp B) show eigrp interfaces C) show ip routing-protocols eigrp D) show ip eigrp interfaces

D) show ip eigrp interfaces

What command will show EIGRP successor and feasible successor routes? A) show ip eigrp neighbor route B) show ip eigrp successor route C) show ip eigrp successor D) show ip eigrp topology

D) show ip eigrp topology

Which Cisco IOS command will display the full contents of the EIGRP topology table, not just feasible successors? A) show ip eigrp database B) show ip eigrp database all-links C) show ip eigrp topology D) show ip eigrp topology all-links

D) show ip eigrp topology all-links

Which Cisco IOS command can be used to display whether an interface is configured as passive? A) show ip ospf passive B) show ip ospf interface passive C) show ip ospf interface brief D) show ip ospf interface

D) show ip ospf interface

Which Cisco IOS command is used to display the current OSPF neighbors and their RIDs? A) show ip interface ospf neighbors B) show interface ospf neighbors C) show ospf neighbors D) show ip ospf neighbor

D) show ip ospf neighbor

Which Cisco IOS command is used to display all the dynamic MAC address table entries on a switch? A) show switch dynamic B) show switch address-table C) show dynamic mac-address D) show mac address-table dynamic

D) show mac address-table dynamic

Which Cisco IOS command is used to display the currently configured VTP password? A) show vtp authentication B) show vtp digest C) show vtp status D) show vtp password

D) show vtp password

Which Cisco IOS command is used to configure an interface to use VLAN 10 as its voice VLAN? A) switchport vlan 10 B) switchport voice 10 C) switchport vlan 10 voice D) switchport voice vlan 10

D) switchport voice vlan 10

Refer to the figure. What Cisco IOS command would be used to enable unequal load balancing and provide both of these routes to be inserted into the routing table? A) eigrp multiplier 4 B) variance 3 C) eigrp multiplier 3 D) variance 4

D) variance 4

Which Cisco IOS command is used to create a new VLAN on a switch? A) access vlan vlan-id B) vlan access vlan-id C) interface vlan vlan-id D) vlan vlan-id

D) vlan vlan-id

Where does a VTP server or client store the state of the VTP pruning feature? A) startup-config B) vtp.dat C) running-config D) vlan.dat

D) vlan.dat

Which components are used as part of EIGRP's default metric? Delay Bandwidth Hop Count Link Reliability

Delay Bandwidth

In a layer 2 switched LAN, all links are running at 100 Mbps. STP uses all default port cost configuration. Non-root switch SW2 receives a Hello on its root port, with that Hello listing a root cost of 38. If SW2 then forwards a Hello out some other port, what root cost will SW2 list in that Hello? A) 42 B) 19 C) None of these are correct D) 38 E) 57

E) 57

Which command would show the reason for an EIGRP router to be unable to establish a neighbor relationship due to authentication failure? A) show ip protocols B) show interfaces C) show ip int brief D) show ip eigrp interfaces E) debug eigrp packets

E) debug eigrp packets

Which of the following would be in a forwarding state in STP? A) All the root ports on the root switch B) Blocking ports after convergence C) Designated ports D) The root port on a nonroot switch

Explanation: As for the correct answers, root ports (which exist on nonroot switches) are in a forwarding state. Designated ports are also in a forwarding state. Additionally, an edge port with RSTP connects to a single non-switch device, meaning it will be the designated port, and therefore reach a forwarding state. As for the incorrect answers, the RSTP backup and alternate port roles exist for a port to take over for some other designated port or root port, respectively. However, while in the backup or alternate role, the port is in a discarding state. Also, for the answer that mentions "root ports on the root switch", note that the root switch has no root port.

Which options are true when referencing switch stacking technologies? They run CDP, STP, and VTP separately. They use a single management IP address. Each switch maintains its own MAC address table. They use a single configuration file.

They use a single management IP address. They use a single configuration file.

Refer to the figure. What information can be determined from the output of this command? The root port to reach this switch in VLAN 1 is the GigabitEthernet 0/1 interface. This switch is the VLAN 1 root switch. This switch uses the default STP timers. This switch is NOT the VLAN 1 root switch.

This switch uses the default STP timers. This switch is NOT the VLAN 1 root switch.

If switch A has an interface configured in dynamic auto mode that is connected to switch B, in which mode does switch B's interface need to be configured to ensure the link between them becomes a trunk? Dynamic Trunk Desirable Auto

Trunk Desirable

Which options are true when referencing the TACACS+ protocol? Uses TCP Uses port 1645 Encrypts the entire packet Uses UDP

Uses TCP Encrypts the entire packet

Which options are true when referencing the RADIUS protocol? Encrypts the entire packet Uses UDP Uses TCP Uses port 1812

Uses UDP Uses port 1812

What single Cisco IOS command could be used to enable EIGRP on two interfaces on a device, the first with an IP address of 172.16.1.1/25 and the second with an IP address of 172.16.100.1/27? network 172.16.1.0 0.0.0.255 network 172.16.0.0 network 172.16.100.0 0.0.0.255 network 172.16.0.0 0.0.255.255

network 172.16.0.0 network 172.16.0.0 0.0.255.255

Which Cisco IOS command can be used to display single line output of each BGP peer? A) show ip bgp summary B) show ip bgp status C) show ip bgp peers D) show ip bgp neighbors

show ip bgp summary

Which Cisco IOS commands can be used to display the interfaces that have been enabled into the local OSPF process? show ip ospf enabled show ip ospf interface show ip ospf interface brief show ip ospf

show ip ospf interface show ip ospf interface brief

Which Cisco IOS command(s) could be used to list the OSPF-enabled interfaces on a device, including passive interface? show ip protocols show ip ospf interface brief show ip protocols interface show ip ospf interface

show ip ospf interface brief show ip ospf interface

Which Cisco IOS command would be used to display each VLAN and all interfaces assigned to it (minus trunks) on a switch? show vlan show vlans show vlan brief show switch vlan

show vlan show vlan brief

Which statements are true about the input shown? SW1#show interfaces gigabitethernet0/2 switchport Name: Gi0/2 Switchport: Enabled Administrative Mode: dynamic desirable Operational Mode: static access Administrative Trunking Encapsulation: negotiate Operational Trunking Encapsulation: native Negotiation of Trunking: On Access Mode VLAN: 5 (Voice) Trunking Native Mode VLAN: 1 (default) Administrative Native VLAN tagging: enabled Voice VLAN: 10 (Data) Administrative private-vlan host-association: none Administrative private-vlan mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk Native VLAN tagging: enabled Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk associations: none Administrative private-vlan trunk mappings: none Operational private-vlan: none Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Capture VLANs Allowed: ALL Protected: false Appliance trust: none SW1# A) The switchport mode dynamic desirable command is configured on the Gi0/2 interface. B) The switchport voice vlan 10 command is configured on the Gi0/2 interface. C) The switchport voice vlan 5 command is configured on the Gi0/2 interface. D) The switchport access vlan 5 command is configured on the Gi0/2 interface. E) The switchport access vlan 10 command is configured on the Gi0/2 interface. F) The switchport mode access command is configured on the Gi0/2 interface.

A) The switchport mode dynamic desirable command is configured on the Gi0/2 interface. B) The switchport voice vlan 10 command is configured on the Gi0/2 interface. D) The switchport access vlan 5 command is configured on the Gi0/2 interface.

What is the name of the process used on VLAN trunks to ensure that traffic from different VLANs are separated? A) VLAN Tagging B) VLAN Sending C) VLAN Seeding D) VLAN Marking

A) VLAN Tagging

Which option is not required for two switches to communicate their VTP information? A) VTP modes must match. B) VTP domains must match. C) VTP configuration revision numbers must match. D) VTP passwords must match.

A) VTP modes must match.

Which Cisco IOS debug command can be used to display OSPF adjacency information to troubleshoot neighborship problems? A) debug ip ospf adj B) debug ip ospf C) debug ospf adjacency D) debug ip ospf adjacency

A) debug ip ospf adj

Which Cisco IOS debug command is used to display log messages whenever STP performs changes to an interface's role or state? A) debug spanning-tree events B) debug spanning-tree interface activity C) debug spanning-tree state D) debug spanning-tree

A) debug spanning-tree events

Imagine that you are told that switch 1 is configured with the dynamic auto parameter for trunking on its Fa0/5 interface, which is connected to switch 2. You have to configure switch 2. Which of the following settings for trunking could allow trunking to work? (Choose two answers.) A) dynamic desirable B) access C) None of the other answers are correct. D) Trunking turned on E) dynamic auto

A) dynamic desirable D) Trunking turned on

Which Cisco IOS command is used to manually configure the EIGRP router ID (RID)? A) eigrp router-id rid B) router-id rid C) eigrp id rid D) id rid

A) eigrp router-id rid

Which of the following commands identify switch interfaces as being trunking interfaces: interfaces that currently operate as VLAN trunks? (Choose two answers.) A) show interfaces trunk B) show trunks C) show interfaces switchport D) show interfaces

A) show interfaces trunk C) show interfaces switchport

What command will show which interface(s) EIGRP is running on? A) show ip eigrp interface B) show ip eigrp topology detail C) show ip eigrp topology D) show ip eigrp

A) show ip eigrp interface

Which IOS command lists the contents of the network configuration commands for each routing process along with enabled but passive interfaces? A) show ip protocols B) show ip route profile C) show ip routing protocols D) show ip routing-protocols

A) show ip protocols

Which Cisco IOS command is used to enable the default use of the BPDU Guard feature? A) spanning-tree portfast bpduguard default B) spanning-tree bpduguard enable C) spanning-tree bpduguard enable default D) spanning-tree bpduguard default

A) spanning-tree portfast bpduguard default

Refer to the diagram; which command would be used to assign the VLAN for host B? A) switchport access vlan 20 B) switchport vlan access 20 C) switchport mode access vlan 20 D) switchport vlan 20

A) switchport access vlan 20

What is the command that is used to configure the access VLAN that is associated with an interface? A) switchport access vlan vlan-id B) switchport vlan vlan-id C) vlan vlan-id D) vlan access vlan-id

A) switchport access vlan vlan-id

Refer to the diagram; which command would be used to configure the switch ports connecting to hosts A, B, C, and D to be permanent access ports? A) switchport mode access B) switchport access mode C) switchport access mode client D) switchport mode client

A) switchport mode access

Which Cisco IOS command would be used to disable DTP negotiations on an interface? A) switchport nonegotiate B) switchport trunk dtp disable C) switchport mode trunk D) switchport mode access

A) switchport nonegotiate

Which Cisco IOS command would be used to control which VLANs are permitted to cross an interface configured and operational as a trunk? A) switchport trunk allowed vlan vlan-ids B) switchport allowed vlan vlan-ids C) switchport trunk permit vlan vlan-ids D) switchport allowed trunk vlan vlan-ids

A) switchport trunk allowed vlan vlan-ids

Which Cisco IOS command is used to configure the VTP mode on a switch? A) vtp mode mode B) vlan server mode C) server mode mode D) virtual mode mode

A) vtp mode mode

Which Cisco IOS command is used to configure the VTP password on a switch? A) vtp password password B) virtual mode password password C) vtp authentication password D) vlan server password password

A) vtp password password

Which VTP modes do not list the VLANs that exist on a switch in the running or startup configurations? Disabled (Off) Transparent Client Server

Client Server

In the figure, the current STP state information is listed, with F for Forwarding and B for Blocking. SW1 is the current root. Assume that all STP parameters are using default values. Next, the network administrator configures a priority value of 61440 on SW1. Assuming that SW2 wins the new root election, which of the following statements is true about STP convergence? A) SW2 interface fa0/3 will be in a listening state for 20 seconds. B) The time spent in the listening state is defined by the Max Age timer. C) Interfaces in a forwarding state before the change that need to stay in a forwarding state after SW2 becomes root will not transition to another STP state D) SW3's fa0/2 interface will transition from a forwarding to a blocking state. E) The time spent in the listening state is defined by the Forward Delay timer. F) SW2 interface fa0/3 will be in a learning state for 15 seconds.

Explanation: When the topology changes, if an interface that was blocking needs to move to a forwarding state, it must spend Forward Delay (default 15 seconds) time in both listening and learning states. If an interface was in a forwarding state, and it does not need to change to blocking, the interface simply stays in a forwarding state.

In the figure, in VLAN 1, all switches have default 802.1d STP settings, and all trunks are up and running at 100 Mbps. Which statements are true regarding the behavior of STP in this network, for VLAN 1, after the STP topology has stabilized? A) SW4 will forward a Hello out its fa0/1 with cost 19 B) SW2 will create Hello messages regularly based on its Hello timer. C) SW4's fa0/1 will become a designated port. D) SW1 will create Hello messages regularly based on its Hello timer. E) SW3's fa0/1 interface will be in a forwarding state.

Explanation: With all default settings, the priorities tie. This means that the switch with the lowest MAC address (SW1) becomes root. Each of the other three switches has a direct connection to SW1, so those switches receive a Hello from SW1, cost 0. The interfaces on which those zero-cost Hellos were received are the switch's root ports, which turns out to be fa0/1 on each switch in this example. Because SW4's fa0/1 is its root port, SW4 will not forward Hellos out that port, and because it is already a root port, SW4's fa0/1 cannot become a designated port.Only the root creates Hellos when the network is stable, so SW2 would never create Hellos. Rather, it updates and forwards the ones it receives from the root (SW1).

In the figure, in VLAN 1, all switches have default 802.1d STP settings, and all trunks are up, with all links running at 100 Mbps. Which statements are true regarding the behavior of STP in this network for VLAN 1 after the STP topology has stabilized? A) SW4's interface Fa0/1 will become the designated port on the link between SW1 and SW4. B) SW3 will create Hello messages regularly based on its Hello timer. C) SW1 will repeatedly forward a Hello out its fa0/4 interface with cost 19. D) SW4 will repeatedly forward a Hello out its fa0/1 interface with cost 10. E) SW3's fa0/2 interface will be its root port.

Explanation: With all default settings, the priorities tie; therefore, the switch that has the lowest MAC address (SW2) becomes root. SW3 receives a zero-cost Hello on its fa0/2 interface, making fa0/2 SW3's root port. Similarly, SW1's fa0/2 receives a zero-cost BPDU, making SW1's Fa0/2 port its root port. During convergence, both SW1 and SW4 forward Hellos onto the link between them. Once they realize that SW4's Fa0/1 port wins the election to be the designated port on this link, SW4 continues to forward Hellos onto that link, but SW1 does not. To make that decision, during convergence, SW1 forwards a Hello to SW4 (out SW1's Fa0/4 port), after adding the cost associated with SW1's fa0/2 (root) port cost. For Fast Ethernet interfaces, the default cost is 19, so SW1's forwarded Hello out its fa0/4 interface has cost 19. For the same reasons, SW4 will forward a cost 19 Hello out its fa0/1, and the Hellos will tie because they have the same root bridge ID and the same cost. The next tiebreaker will be the lowest bridge ID of the switches that are sending the Hellos. In this case, SW4's is lower, making SW4's fa0/1 interface the designated port on the trunk between SW1 and SW4. At that point, SW4 continues to forward Hellos out this link to SW1, but SW1 ceases to send Hellos out this port. With 802.1D STP, only the root creates Hellos when the network is stable, so SW3 would never create Hellos. Rather, SW3 updates and forwards the ones it receives from the root (SW2).

What are the names of the most common two Cisco access layer switch stacking technologies? FlexStack FlexStack Plus SyncroStack InfiniStack

FlexStack FlexStack Plus

Which Cisco IOS commands are used to modify the default parameters EIGRP uses for its metric? reliability reliability delay delay load load bandwidth bandwidth

delay delay bandwidth bandwidth