CCNA 2 Midterm

Which two special characteristics do LAN switches use to alleviate network congestion? (Choose two.) -fast port speeds -fast internal switching -low port densities -small frame buffers

- fast port speeds - fast internal switching

During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process? -All switches send out BPDUs advertising themselves as the root bridge. -Each switch with a lower root ID that its neighbor will not send BPDUs. -Each switch determines what port to block to prevent a loop from occurring. -Each switch determines the best path to forward traffic.

-All switches send out BPDUs advertising themselves as the root bridge.

The port on the segment (with two switches) that has the lowest path cost to the root bridge is the: -Designated port -blocked or non-designated port -root port -routed port

-Designated port

Which of the following ports will forward Ethernet frames? (Choose two.) -Designated port -Blocked or non-designated port -root port

-Designated port -root port

When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation? -Passive -Auto -Active -Desirable

-Desirable

Which three STP port states are merged into the RSTP discarding port state? (Choose three.) -Disabled -Blocking -Listening -Learning -Forwarding.

-Disabled -Blocking -Listening

How often does a switch send a BPDU? -Every 2 seconds -Every 15 seconds -Every 20 seconds -Only when there is a change in the topology.

-Every 2 seconds

What will a Cisco LAN switch do if it receives an incoming frame and the destination MAC address is not listed in the MAC address table? -Drop the frame -Forward the frame out all ports except the port where the frame is received. -Send the frame to the default gateway address. -Use ARP to resolve the port that is related to the frame.

-Forward the frame out all ports except the port where the frame is received.

Which two statements are true about half-duplex and full-duplex communications? (Choose two.) -All modern NICs support both half-duplex and full-duplex communications. -Full duplex offers 100 percent potential use of the bandwidth. -Full duplex increases the effective bandwidth. -Half duplex has only one channel -Full duplex allows both ends to transmit and receive simultaneously.

-Full duplex increases the effective bandwidth. -Full duplex allows both ends to transmit and receive simultaneously.

What value determines the root bridge when all switches connected by trunk links have default STP configurations? -VLAN ID -bridge priority -MAC address -extended system ID

-MAC address

What is one way to correct a spanning tree failure? -Manually remove redundant links in the switched network -Insert redundant links to replace the failed STP links. Replace the cables on the failed STP links. Replace all instances of STP with RSTP.

-Manually remove redundant links in the switched network

Which is the default STP operation mode on Cisco Catalyst switches? -Rapid PVST+ -PVST+ -MST -MSTP -RSTP

-PVST+

Which technology solves the problem of a device being unable to get an IPv4 address from a DHCP server due to STP forwarding delay timers? -PortFast -BPUD Guard -PVST -MSTP

-PortFast

Which protocol was designed to bring faster convergence to STP? -PortFast -RSTP -PVST -MSTP

-RSTP

The sum of individual port costs along the path from the switch to the root bridge is known as the: -Least cost path -Shortest path -Best path cost -Root path cost

-Root path cost

The port closest to the root bridge in terms of least overall cost (best path) to the root bridge is the: -Designated port -Blocked port or non-designated port -root port -routed port

-Root port

Which three port states are used by Rapid PVST+? (Choose three.) -Trunking -learning -discarding -forwarding -listening -blocking

-learning -discarding -forwarding

When PVST is running over a switched network, which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames? -disabled -blocking -listening -forwarding

-listening

A PC is to access a web server on another network. Which inter-VLAN method will provide the highest bandwidth at Layer 3 and also provide a default gateway for the PC? -multiple physical interfaces on the router, all connected to a layer 2 switch. -router on a stick -multilayer switch with routing enabled -trunked interface between the router and the switch.

-multilayer switch with routing enabled

When a Cisco switch receives untagged frames on a 802.1Q trunk port, which VLAN ID is the traffic switched to by default? -data VLAN ID -management VLAN ID -unused VLAN ID -native VLAN ID

-native VLAN ID

Which three are PAgP interface modes? (Choose three.) -on -auto -active -passive -desirable

-on -auto -desirable

What device is elected by the Spanning Tree Algorithm? All other switches determine a single least-cost path to this device. -root bridge -dedicated bridge -default gateway -core switch

-root bridge

An administrator was troubleshooting a router-on-a-stick topology and concluded that the problem was related to the configuration of VLANs on the router subinterfaces. Which two commands can the administrator use in the router to identify the problem? (Choose two.) -show ip protocols -show running-config -show ip interface -show controllers -show vlan

-show running-config -show ip interface

What type of Ethernet cable would be used to connect one switch to another switch when neither switch supports the auto-MDIX feature? -Crossover -Rollover -Straight-through -coaxial

Crossover

True or False? FastEthernet and GigabitEthernet links can be combined into a single EtherChannel.

False

True or False? It is a best practice to configure the native VLAN as VLAN 1.

False

True or False? PAgP and LACP are both Cisco-proprietary link aggregation protocols.

False

Which distinct type of VLAN is used by an administrator to access and configure a switch? -default VLAN -native VLAN -data VLAN -management VLAN

management VLAN

A small college uses VLAN 10 for the classroom network and VLAN 20 for the office network. What is needed to enable communication between these two VLANs while using legacy inter-VLAN routing? -Two groups of switches are needed, each with ports that are configured for one VLAN. -A router with on VLAN interface is needed to connect to the SVI on a switch. -A switch with a port that is configured as trunk is needed to connect to a router. -A router with at least two LAN interfaces should be used.

-A router with at least two LAN interfaces should be used.

If an organization is changing to include Cisco IP phones in its network, what design feature must be considered to ensure voice quality? -Voice traffic and data traffic require separate trunk links between switches. -A separate VLAN is needed for voice traffic. -Voice traffic needs to be tagged with the native VLAN. -Additional switch ports that are dedicated to Cisco IP phones are required.

-A separate VLAN is needed for voice traffic.

Which statement is true about broadcast and collision domains? -The size of the collision domain can be reduced by adding hubs to a network. -The more interfaces a router has the larger the resulting broadcast domain. -Adding a switch to a network will increase the size of the broadcast domain. -Adding a router to a network will increase the size of the collision domain.

-Adding a switch to a network will increase the size of the broadcast domain.

Which is true of VLAN 1? (Choose all that apply.) -All switch ports are assigned to VLAN1 by default -The native VLAN is VLAN1 by default -The management VLAN is VLAN1 by default -VLAN 1 cannot be renamed or deleted

-All switch ports are assigned to VLAN1 by default -The native VLAN is VLAN1 by default -The management VLAN is VLAN1 by default -VLAN 1 cannot be renamed or deleted

An EtherChannel link using LACP was formed between two switches, S1 and S2. While verifying the configuration, which mode combination could be utilized on both switches?​ -S1-on and S2-active -S1-on and S2-Passive -S1-passive and S2-active -S1-passive and S2-passive

-S1-passive and S2-active

Which statement describes STP? -STP is a layer 2 routing protocol. -STP is a layer 3 routing protocol for ethernet LANs. -STP is a layer 2 loop prevention protocol for ethernet LANs. -STP is a layer 3 loop prevention protocol for IP networks.

-STP is a layer 2 loop prevention protocol for ethernet LANs.

Which Two tasks can be accomplished by using the command history feature? -Save command lines in a log file for future reference. -Set the command history buffer size. -Recall previously entered commands. -Recall up to 15 command lines by default. -View a List of commands entered in a previous session.

-Set the command history buffer size. -Recall previously entered commands.

An administrator is investigating a failure on a trunk link between a Cisco switch and a switch from another vendor. After a few show commands, the administrator notices that the switches are not negotiating a trunk. What is a probable cause for this issue? -Switches from other vendors do not support DTP -DTP frames are flooding the entire network. -Both switches are in non-negotiate mode. -Both switches are in trunk mode.

-Switches from other vendors do not support DTP

By default (without any configuration on a switch), what will determine which switch is the root bridge? -The bridge priority -The extended system ID -The MAC address of the switch -The bridge ID

-The MAC address of the switch

What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch? -The port automatically associates itself with the native VLAN. -The port becomes inactive. -The port goes back to the default VLAN. -The port creates the VLAN again.

-The port becomes inactive.

Which three interface parameters must match for an EtherChannel to form? (Choose three.) -Trunking mode -PortFast mode -EtherChannel mode -native VLAN -spanning-tree state -allowed VLANs

-Trunking mode -native VLAN -allowed VLANs

Which information does a switch use to keep the MAC address table information current? -the destination MAC address and the incoming port. -the source MAC address and the incoming port. -the destination MAC address and the outgoing port. -the source MAC address and the outgoing port. -the source and destination MAC addresses and incoming port. -the source and destination MAC addresses and the outgoing port.

-the source MAC address and the incoming port.

While configuring inter-VLAN routing on a multilayer switch, a network administrator issues the no switchport command on an interface that is connected to another switch. What is the purpose of this command? -to provide a static trunk link -to provide an access link that tags VLAN traffic -to create a routed port for a single network -to create a switched virtual interface.

-to create a routed port for a single network

A network administrator enters the following command sequence on a Cisco 3560 switch. What is the purpose of these commands? Switch(config)# interface gigabitethernet 0/1Switch(config-if)# no switchport -to make the Gi0/1 port a routed port. -to enable the Gi0/1 port as a switch virtual interface. -to shut down the Gi0/1 port -to enable the Gi0/1 port as a bride virtual interface.

-to make the Gi0/1 port a routed port.

Which type of VLAN is assigned to 802.1Q trunk ports to carry untagged traffic? -default -native -data -management

Native

True or False? VLANs can improve security by isolating sensitive data from the rest of the network.

True

True or False? VLANs improve network performance by segmenting broadcast domains.

True

What is the meaning of the number 10 in the encapsulation dot1Q 10 native router subinterface command?​ -the interface number -the subnet number -the VLAN ID -the subinterface number

the VLAN ID

For what reason would a network administrator use the show interfaces trunk command on a switch? -to view the native VLAN -to display an IP address for any existing VLAN -to examine DTP negotiation as it occurs -to verify port association with a particular VLAN

to view the native VLAN

When configuring a switch for SSH access, what other command that is associated with the login local command is required to be entered on the switch? -enable secret password -password password -login block-for seconds attempts number within seconds -username username secret secret

username username secret secret

What does the term "port density" represent for an Ethernet switch? - the number of available ports -the speed of each port -the memory space that is allocated to each switch port. -the numbers of hosts that are connected to each switch port.

- the number of available ports

What is the purpose of setting the native VLAN separate from data VLANs? -A separate VLAN should be used to carry uncommon untagged frames to avoid bandwidth contention on data VLANS. -The native VLAN is for routers and switches to exchange their management information, so it should be different from data VLANS. -The native VLAN is for carrying VLAN management traffic only. -The security of management frames that are carried in the native VLAN can be enhanced.

-A separate VLAN should be used to carry uncommon untagged frames to avoid bandwidth contention on data VLANS.

What is the significant difference between a hub and a Layer 2 LAN switch? -A hub divides collision domains, and a switch divides broadcast domains. -Each port of a hub is a collision domain, and each port of a switch is broadcast domain. -A switch creates many smaller collision domains, and a hub increases the size of a single collision domain -A hub forwards frames, and a switch forward only packets.

-A switch creates many smaller collision domains, and a hub increases the size of a single collision domain

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge? -Each switch will analyze the port states of all neighbors and use the designated ports to forward traffic to the root. -Each switch will analyze the BID of all neighbors to reach the root and use the path through the lowest BID neighbors. -Each switch will analyze the sum of the hops to reach the root and use the path with the fewest hops. -Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

-Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

Which two statements describe a switch port that is configured with PortFast? (Choose two.) -The switch port immediately transitions from blocking to the forwarding state. -The switch port immediately processes any BPDUs before transitioning to the forwarding state. -The switch pot should never recieve BPDUs -The switch port immediately transitions from the listening to forwarding state. -The switch port sends DHCP requests before transitioning to the forwarding state.

-The switch port immediately transitions from blocking to the forwarding state. -The switch pot should never recieve BPDUs

What is the purpose of frame buffers on a switch? -The provide temporary storage of the frame checksum. -They execute checksum values before transmission. -They provide a basic security scan on received frames. -They hold traffic, thus alleviating network congestion.

-They hold traffic, thus alleviating network congestion.

How is traffic routed between multiple VLANs on a multilayer switch? -Traffic is routed via internal VLAN interfaces. -Traffic is routed via subinterfaces. -Traffic is broadcast out all physical interfaces. -Traffic is routed via physical interfaces.

-Traffic is routed via internal VLAN interfaces.

Without STP on the Ethernet LAN, which three types of frames could cause a catastrophic loop in the network? (Choose three.) -Unicast -Unknown Unicast -Multicast -Broadcast

-Unknown Unicast -Multicast -Broadcast

What additional information is contained in the 12-bit extended system ID of a BPDU? -IP address -MAC address -VLAN ID -port ID

-VLAN ID

What is required to perform router-on-a-stick inter-VLAN routing? -a multilayer switch -a layer 2 switch that is configured with multiple trunk ports -a router that is configured with multiple subinterfaces -a router with multiple physical interfaces

-a router that is configured with multiple subinterfaces

Which combinations of PAgP modes will form an EtherChannel? (Choose all that apply.) -auto > desirable -desirable > on -auto > on -on > on -on > active -active > passive

-auto > desirable -on > on

What is an accurate description of redundancy? -configuring a router with a complete MAC address database to ensure that all frames can be forwarded to the correct destination. -designing a network to use multiple paths between switches to ensure there is no single point of failure. -configuring a switch with proper security to ensure that all traffic forwarded through an interface is filtered. -designing a network to use multiple virtual devices to ensure that all traffic uses the best path through the internetwork.

-designing a network to use multiple paths between switches to ensure there is no single point of failure.

Which PAgP interface mode will initiate negotiation with other interfaces? -on -desirable -auto

-desirable

What is one function of a Layer 2 switch? -forwards data based on logical addressing - learns the port assigned to a host by examining the destination MAC address. -duplicates the electrical signal of each frame to every port. -determines which interface is used to forward a frame based on the destination MAC address.

-determines which interface is used to forward a frame based on the destination MAC address.

Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.) -edge port -PVST+ -Extended system ID -PortFast -bridge ID

-edge port -PortFast

Which are benefits of EtherChannel technology? (Choose all that apply.) -fault-tolerance -load sharing -increased bandwidth -link redundancy

-fault-tolerance -load sharing -increased bandwidth -link redundancy

Which port state will switch ports immediately transition to when configured for PortFast? -forwarding -listening -blocking -learning

-forwarding

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port? -frame buffering -fast port speed - high port density -fast internal switching

-frame buffering

Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge? -disabled port -root port -designated port -alternate

-root port

Which network device can serve as a boundary to divide a Layer 2 broadcast domain? -router -access point -ethernet hub -ethernet bridge

-router

Which type of inter-VLAN communication design requires the configuration of multiple subinterfaces? -routing via a multilayer switch -legacy inter-VLAN routing -routing for the management VLAN. -router on a stick

-router on a stick

Which scalable method must be implemented in order to provide inter-VLAN routing on a switched network with more than 1000 VLANs? -connecting each physical router interface to a different physical switch port, with each switch port assigned to a different VLAN. -connecting a router interface to a switch port that is configured in trunk mode to route packets between VLANs, with each VLAN assigned to a router subinterface. -configuring static routes on a layer 2 switch device. -routing traffic internally to a layer 3 switch device.

-routing traffic internally to a layer 3 switch device.

An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used to do this? -show vlan -show running-config -show startup-config -show spanning tree

-show spanning tree

Which type of address does a switch use to build the MAC address table? -source IP address -destination MAC address -source MAC address -destination IP address

-source MAC address

Which switching method makes use of the FCS value? -broadcast -large frame buffer -cut-through -store-and-forward

-store-and-forward

Which option correctly describes a switching method? -cut-through: provides the flexibility to support any mix of ethernet speeds. -store-and-forward: ensures that the frame is free of physical and data-link errors. -store-and-forward: forwards the frame immediately after examining its destination MAC address. -cut-through: makes a forwarding decision after receiving the entire frame.

-store-and-forward: ensures that the frame is free of physical and data-link errors.

Which network device can be used to eliminate collisions on an Ethernet network? -firewall -switch -hub -router

-switch

When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where should the IP address be assigned? -to the subinterface. -to the interface. -to the SVI. -to the VLAN.

-to the subinterface.

What operational mode should be used on a switch port to connect it to a router for router-on-a-stick inter-VLAN routing? -Dynamic auto -trunk -dynamic desirable -access

-trunk

Which router bootup sequence is correct?​

1 - perform the POST and load the bootstrap program 2 - locate and load the Cisco IOS software 3 - locate and load the startup configuration file or enter setup mode

Which port speed will be autonegotiated between a host with a 1 Gbps NIC connecting to a Cisco Catalyst 2960 switch with a 100 Mbps port? - 10 Mbps -100 Mbps -1 Gbps -10 Gbps

100 Mbps

Which statement describes SVIs? -An SVI is created automatically for each VLAN on a muti-layer switch. -An SVI can only be created for the management VLAN. -Creating an SVI automatically creates n associated VLAN. -A default SVI is created for VLAN 1 for switch administration.

A default SVI is created for VLAN 1 for switch administration.

A network administrator has configured ​VLAN 99 as the management VLAN and has configured it with an IP address and subnet mask. The administrator issues the show interface vlan 99 command and notices that the line protocol is down. Which action can change the state of the line protocol to up? -Connect a host to an interface associated with VLAN 99. -Configure a transport input method on the vty lines. -Remove all access ports from VLAN 99 -Configure a default gateway.

Connect a host to an interface associated with VLAN 99.

What advantage does SSH offer over Telnet? -username and password authentication -encryption -connection-oriented services -more connection lines

Encryption

Which statement describes the system LED operation on Cisco Catalyst switches? -If the LED is amber, The system is receiving power but is not functioning properly. -If the LED is blinking amber, the switch is performing POST. -If the LED is blinking green, the system is operating normally. -If the LED is amber, the system is not powered on.

If the LED is amber, The system is receiving power but is not functioning properly.

A Cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a switchport trunk allowed vlan 30 command on Fa0/5? -It allows VLANs 10, 20, and 30 on Fa0/5 -It allows only VLAN 30 on Fa0/5 -It allows VLANs 1 to 30 on Fa0/5. -It allows a native VLAN of 30 to be implemented on Fa0/5.

It allows only VLAN 30 on Fa0/5

What is the purpose of the vlan.dat file on a switch? -It holds the VLAN database. -It holds the operating system. -It holds the running configuration. -It holds the saved configuration.

It holds the VLAN database.

What is a disadvantage of using multilayer switches for inter-VLAN routing? -Multilayer switches are limited to using trunk links for layer 3 routing. -Multilayer switches are more expensive that router-on-a-stick implementations. -Multilayer switches have higher latency for layer 3 routing. -Spanning tree must be disabled in order to implement routing on a multilayer switch.

Multilayer switches are more expensive that router-on-a-stick implementations.

What must an administrator have in order to reset a lost password on a router? -Physical access to the router -Access to another router -a crossover cable -a TFTP server

Physical access to the router

Which sentence correctly describes the SVI inter-VLAN routing method? -subinterfaces have to be created -an SVI is needed for each VLAN. -the encapsulation type must be configured on the SVI. -a physical interface is needed for every VLAN that is created.

an SVI is needed for each VLAN.

A network administrator is determining the best placement of VLAN trunk links. Which two types of point-to-point connections utilize VLAN trunking?​ (Choose two.) -between two switches that utilize multiple VLANs -between a switch and a server that has an 802.1Q NIC -between a switch and a client PC -between two switches that share a common VLAN -between a switch and a network printer

between two switches that utilize multiple VLANs between a switch and a server that has an 802.1Q NIC

What are two primary benefits of using VLANs? (Choose two.) -cost reduction -end user satisfaction - a reduction in the number of trunk links -security

cost reduction security

What is a disadvantage of using router-on-a-stick inter-VLAN routing? -does not scale well beyond 50 VLANs -requires the use of multiple router interfaces configured to operate as access links. -requires the use of more physical interfaces that legacy inter-VLAN routing. -does not support VLAN-tagged packets.

does not scale well beyond 50 VLANs

In which memory location are the VLAN configurations of normal range VLANs stored on a Catalyst switch? -NVRAM -ROM -RAM -flash

flash

In which location are the normal range VLANs stored on a Cisco switch by default? -flash memory -running-config -RAM -startup-config

flash memory

Where is the vlan.dat file stored on a switch? -on the externally attached storage media or internal hard drive. -in NVRAM -in flash memory -in RAM

in flash memory

What is the first action in the boot sequence when a switch is powered on? -load a power-on self-test program -load boot loader software -low-level CPU initialization -load the default Cisco IOS software

load a power-on self-test program

The root bridge will be the switch with the: -Lowest bridge ID -Highest bridge ID -Lowest port priority -highest port priority

lowest bridge ID

Which device separates broadcast domains? - access point -hub -router -switch

router

On a Cisco switch, where is extended range VLAN information stored? -NVRAM -startup configuration file -running configuration file -flash

running configuration file

Which command will provide information about the status of all interfaces including the number of giants, runts, and collisions on the interface? -show running-config -show interfaces -show history -show ip interface brief

show interfaces

Which prompt is displayed when a network administrator successfully accesses the boot loader on a switch to recover from a system crash? -system: -system# -switch# -switch:

switch: