CISCO II Midterm

Send a DHCPDISCOVER message to physical address FF-FF-FF-FF-FF-FF.

A client device on an Ethernet segment needs an IP address in order to communicate on the network. A DHCP server with IP address 192.168.1.1 has been configured and enabled on the network. How will a client device obtain a usable IP address for this network? Send a DHCPDISCOVER message to physical address FF-FF-FF-FF-FF-FF. Use a statically configured IP address from the pool of IP addresses that is offered by the DHCP server. Send a DHCPREQUEST packet to IP address 255.255.255.255. Send a DHCPACK packet to the default gateway address.

FF-FF-FF-FF-FF-FF and 255.255.255.255

A company uses DHCP servers to dynamically assign IPv4 addresses to employee workstations. The address lease duration is set as 5 days. An employee returns to the office after an absence of one week. When the employee boots the workstation, it sends a message to obtain an IP address. Which Layer 2 and Layer 3 destination addresses will the message contain? Both MAC and IPv4 addresses of the DHCP server FF-FF-FF-FF-FF-FF and IPv4 address of the DHCP server FF-FF-FF-FF-FF-FF and 255.255.255.255 MAC address of the DHCP server and 255.255.255.255

67 and 68

A company uses DHCP to manage IP address deployment for employee workstations. The IT department deploys multiple DHCP servers in the data center and uses DHCP relay agents to facilitate the DHCP requests from workstations. Which two UDP ports are used to forward DHCP traffic? 20 and 21 80 and 443 67 and 68 22 and 23

The link-local address of the router interface that is attached to the network

A company uses the SLAAC method to configure IPv6 addresses for the employee workstations. Which address will a client use as its default gateway?​ The unique local address of the router interface that is attached to the network The global unicast address of the router interface that is attached to the network The link-local address of the router interface that is attached to the network The all-routers multicast address

R1(config)# ipv6 unicast-routing

A company uses the method SLAAC to configure IPv6 addresses for the workstations of the employees. A network administrator configured the IPv6 address on the LAN interface of the router. The interface status is UP. However, the workstations on the LAN segment did not obtain the correct prefix and prefix length. What else should be configured on the router that is attached to the LAN segment for the workstations to obtain the information?​ R1(config-if)# ipv6 enable R1(config-if)# ipv6 nd other-config-flag R1(config)# ipv6 dhcp pool < name of the pool > R1(config)# ipv6 unicast-routing

DHCPACK

A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information? DHCPNACK DHCPOFFER DHCPDISCOVER DHCPACK DHCPREQUEST

The remaining two interfaces continue to load balance traffic.

A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down? The remaining two interfaces continue to load balance traffic. The remaining two interfaces become separate links between the two switches. One interface becomes an active link for data traffic and the other becomes a backup link. The EtherChannel fails.

It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information.

A network administrator configures a router to send RA messages with M flag as 0 and O flag as 1. Which statement describes the effect of this configuration when a PC tries to configure its IPv6 address? It should use the information that is contained in the RA message exclusively. It should contact a DHCPv6 server for all the information that it needs. It should contact a DHCPv6 server for the prefix, the prefix-length information, and an interface ID that is both random and unique. It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information.

SW2(config-if-range)# channel-group 1 mode desirable

A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode auto . Which command must be used on SW2 to enable this EtherChannel? SW2(config-if-range)# channel-group 1 mode passive SW2(config-if-range)# channel-group 1 mode desirable SW2(config-if-range)# channel-group 1 mode active SW2(config-if-range)# channel-group 1 mode on

Set the WAN connection in the wireless router as a DHCP client.

A small coffee shop is offering free Wi-Fi to customers. The network includes a wireless router and a DSL modem that is connected to the local phone company. What method is typically used to configure the connection to the phone company? Set the DSL modem as a DHCP client to the phone company and a DHCP server for the internal connection. Set the WAN connection in the wireless router as a DHCP client. Set the DSL modem as a DHCP client to get a public IP address from the wireless router. Set the connection between the wireless router and the DSL modem as a private IP network.

The host sends an ICMPv6 neighbor solicitation message to the DHCP or SLAAC-learned address and if no neighbor advertisement is returned, the address is considered unique.

After a host has generated an IPv6 address by using the DHCPv6 or SLAAC process, how does the host verify that the address is unique and therefore usable? The host checks the local neighbor cache for the learned address and if the address is not cached, it is considered unique. The host sends an ICMPv6 neighbor solicitation message to the DHCP or SLAAC-learned address and if no neighbor advertisement is returned, the address is considered unique. The host sends an ICMPv6 echo request message to the DHCPv6 or SLAAC-learned address and if no reply is returned, the address is considered unique. The host sends an ARP broadcast to the local link and if no hosts send a reply, the address is considered unique.

On the half-duplex end of the connection

If one end of an Ethernet connection is configured for full-duplex and the other end of the connection is configured for half-duplex, where would late collisions be observed? On the half-duplex end of the connection On the full-duplex end of the connection On both ends of the connection Only on serial interfaces

A client initiating a message to find a DHCP server DHCPDISCOVER A DHCP server responding to the initial request by a client DHCPOFFER The client accepting the IP address provided by the DHCP server DHCPREQUEST The DHCP server confirming that the address lease has been accepted

Match each DHCP message type with its description. (Not all options are used.) A) A client initiating a message to find a DHCP server B) A DHCP server responding to the initial request by a client C) The client accepting the IP address provided by the DHCP server D) The DHCP server confirming that the address lease has been accepted 1) DHCPDISCOVER 2) DHCPOFFER 3) DHCPREQUEST 4) DHCPACK 5) DHCPNACK

Step 1 DHCPv6 SOLICIT Step 2 DHCPv6 ADVERTISE Step 3 DHCPv6 REQUEST Step 4 DHCPv6 REPLY

Match the DHCP message types to the order of the stateful DHCPv6 process when a client first connects to an IPv6 network. (Not all options are used.) STEP 1 STEP 2 STEP 3 STEP 4 a) DHCPv6 SOLICIT b) DHCPv6 ADVERTISE c) DHVPv6 REQUEST d) DHCPv6 REPLY e) DHCPv6 OFFER

User Priority | A value that supports level or service implementation. Type | A value for the tag protocol ID value Canonical Format Identifier | Enables Token Ring frames to be carried across Ethernet links. VLAN ID | A Vlan number

Match the IEEE 802.1Q standard VLAN tag field with the description. (Not all options are used.) A) User Priority B) Type C) Canonical Format Identifier D) VLAN ID 1) A value that supports level or service implementation 2) A value for the tag protocol ID value 3) Enables Token Ring frames to be carried across Ethernet links 4) A VLAN number 5) A value for the application protocol of the user data in the frame

Enabled in RA messages with the ipv6 nd other-config-flag command Stateless DHCPv6 Clients send only DHCPv6 INFORMATION-REQUEST messages to the server Stateless DHCPv6 Enabled on the client with the ipv6 address autoconfig command Stateless DHCPv6 The M flag is set to 1 in RA messages Stateful DHCPv6 Uses the address command to create a pool of addresses for clients Stateful DHCPv6 Enabled on the client with the ipv6 address dhcp command Stateful DHCPv6

Match the descriptions to the corresponding DHCPv6 server type. A)Enabled in RA messages with the ipv6 nd other-config-flag command B) Clients send only DHCPv6 INFORMATION-REQUEST messages to the server C) Enabled on the client with the ipv6 address autoconfig command D) The M flag is set to 1 in RA messages E) Uses the address command to create a pool of addresses for clients F) Enabled on the client with the ipv6 address dhcp command 1) Stateless DHCPv6 x 3 2) Stateful DHCPv6 x 3

A message that is used to identify the explicit server and lease offer to accept DHCPREQUEST A message that is used to locate any available DHCP server on a network! DHCPDISCOVER A message that is used to suggest a lease to a client DHCPOFFER A message that is used to acknowledge that the lease is successful DHCPACK

Match the purpose with its DHCP message type. (Not all options are used.) A) A message that is used to identify the explicit server and lease offer to accept B) A message that is used to locate any available DHCP server on a network C) A message that is used to suggest a lease to a client D) A message that is used to acknowledge that the lease is successful 1) DHCPREQUEST 2) DHCPDISCOVER 3) DHCPOFFER 4) DHCPACK 5) DHCPNACK

No shutdown

Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up? No shutdown End Clockrate 128000 IPv6 enable

The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.

Refer to the exhibit. A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0? The default gateway address is not provided in the pool. The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation. No clients have communicated with the DHCPv6 server yet. The IPv6 DHCP pool configuration has no IPv6 address range specified.

The router is configured for stateless DHCPv6 operation.

Refer to the exhibit. A network administrator is configuring a router for DHCPv6 operation. Which conclusion can be drawn based on the commands? The router is configured for stateless DHCPv6 operation. The DHCPv6 server name is ACAD_CLASS. The router is configured for stateful DHCPv6 operation, but the DHCP pool configuration is incomplete. Clients would configure the interface IDs above 0010.

The EtherChannel fails to establish.

Refer to the exhibit. A network administrator is configuring an EtherChannel link between two switches, SW1 and SW2. Which statement describes the effect after the commands are issued on SW1 and SW2? The EtherChannel is established after SW2 initiates the link request. The EtherChannel is established without negotiation. The EtherChannel is established after SW1 initiates the link request. The EtherChannel fails to establish.

The router is configured for SLAAC operation.

Refer to the exhibit. A network administrator is implementing the stateless DHCPv6 operation for the company. Clients are configuring IPv6 addresses as expected. However, the clients are not getting the DNS server address and the domain name information configured in the DHCP pool. What could be the cause of the problem? The GigabitEthernet interface is not activated. The clients cannot communicate with the DHCPv6 server, evidenced by the number of active clients being 0. The router is configured for SLAAC operation. The DNS server address is not on the same network as the clients are on.

The EtherChannel is not functional.

Refer to the exhibit. A network administrator issued the show etherchannel summary command on the switch S1. What conclusion can be drawn? FastEthernet ports Fa0/1, Fa0/2, and Fa0/3 do not join the EtherChannel. The EtherChannel is not functional. The EtherChannel is suspended. The port aggregation protocol PAgP is misconfigured.

The command used to assign the voice VLAN to the switch port is incorrect.

Refer to the exhibit. A technician is programming switch SW3 to manage voice and data traffic through port Fa0/20. What, if anything, is wrong with the configuration? There is nothing wrong with the configuration. The mls qos trust cos command should reference VLAN 35. The command used to assign the voice VLAN to the switch port is incorrect. Interface Fa0/20 can only have one VLAN assigned.

The EtherChannel was not configured with the same allowed range of VLANs on each interface.

Refer to the exhibit. An EtherChannel was configured between switches S1 and S2, but the interfaces do not form an EtherChannel. What is the problem? The EtherChannel was not configured with the same allowed range of VLANs on each interface. The switch ports were not configured with speed and duplex mode. The interface port-channel number has to be different on each switch. The switch ports have to be configured as access ports with each port having a VLAN assigned.​

Desirable

Refer to the exhibit. An administrator wants to form an EtherChannel between the two switches by using the Port Aggregation Protocol. If switch S1 is configured to be in auto mode, which mode should be configured on S2 to form the EtherChannel? Desirable On Off Auto

Stateless DHCPv6

Refer to the exhibit. Based on the output that is shown, what kind of IPv6 addressing is being configured? Stateful DHCPv6 Static link-local SLAAC Stateless DHCPv6

The ipv6 dhcp relay command should be applied to interface Gig0/0.

Refer to the exhibit. PC-A is unable to receive an IPv6 address from the stateful DHCPv6 server. What is the problem? The ipv6 dhcp relay command should be applied to interface Gig0/0. The ipv6 nd managed-config-flag should be applied to interface Gig0/1. The ipv6 nd managed-config-flag command should be ipv6 nd other-config-flag . The ipv6 dhcp relay command should use the link-local address of the DHCP server.

255.255.255.255

Refer to the exhibit. PC1 is configured to obtain a dynamic IP address from the DHCP server. PC1 has been shut down for two weeks. When PC1 boots and tries to request an available IP address, which destination IP address will PC1 place in the IP header? 255.255.255.255 192.168.1.1 192.168.1.8 192.168.1.255

Traffic cannot be sent to two different switches through the same EtherChannel link.

Refer to the exhibit. The administrator tried to create an EtherChannel between S1 and the other two switches via the commands that are shown, but was unsuccessful. What is the problem? Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.​ Traffic cannot be sent to two different switches through the same EtherChannel link. Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches.​ Traffic can only be sent to two different switches if EtherChannel is implemented on Gigabit Ethernet interfaces.​

Add the ipv6 dhcp relay command to interface Fa0/0.

Refer to the exhibit. What should be done to allow PC-A to receive an IPv6 address from the DHCPv6 server? Change the ipv6 nd managed-config-flag command to ipv6 nd other-config-flag . Configure the ipv6 nd managed-config-flag command on interface Fa0/1. Add the IPv6 address 2001:DB8:1234:5678::10/64 to the interface configuration of the DHCPv6 server. Add the ipv6 dhcp relay command to interface Fa0/0.

EtherChannel

Refer to the exhibit. Which switching technology would allow each access layer switch link to be aggregated to provide more bandwidth between each Layer 2 switch and the Layer 3 switch? HSRP EtherChannel Trunking PortFast

251 (You can figure this out by doing 256 - 00000000 (0) - 3)

The address pool of a DHCP server is configured with 10.19.44.0/24. The network administrator reserves 3 IP addresses for servers. How many IP addresses are left in the pool to be assigned to other hosts? 252 251 249 241 255

248 (You can figure this out by doing 256 - 00000000 (0) - 6)

The address pool of a DHCP server is configured with 10.19.44.0/24. The network administrator reserves 6 IP addresses for servers. How many IP addresses are left in the pool to be assigned to other hosts? 252 246 238 249 248

116 (You can figure this out by doing 256 - 10000000 (128) - 10 - 2)

The address pool of a DHCP server is configured with 172.18.93.0/25. The network administrator reserves 10 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts? 114 116 120 117 106

44 (You can figure this out by doing 256 - 11000000 (192) - 18 - 2)

The address pool of a DHCP server is configured with 192.168.184.0/26. The network administrator reserves 18 IP addresses for access points. How many IP addresses are left in the pool to be assigned to other hosts? 46 54 57 36 44

8 (You can figure this out by doing 256 - 11100000 (224) - 18 - 2)

The address pool of a DHCP server is configured with 192.168.234.0/27. The network administrator reserves 22 IP addresses for IP phones. How many IP addresses are left in the pool to be assigned to other hosts? 18 8 21 10 0

The IPv4 addresses that are assigned to hosts by the DHCP server

What information can be verified through the show ip dhcp binding command? The IPv4 addresses that have been excluded from the DHCPv4 pool The IPv4 addresses that are assigned to hosts by the DHCP server That DHCPv4 discover messages are still being received by the DHCP server The number of IP addresses remaining in the DHCP pool

Source MAC to destination MAC

What is a load-balancing method used in EtherChannel technology? Combination of source MAC and IP to destination MAC and IP Source port to destination port Source MAC to destination MAC Combination of source port and IP to destination port and IP

All the interfaces need to work at the same speed.

What is a requirement to be able to configure an EtherChannel between two switches? All the interfaces need to work at the same speed. All interfaces need to be assigned to different VLANs. The interfaces that are involved need to be contiguous on the switch. Different allowed ranges of VLANs must exist on each end.

The allowed range of VLANs must be the same on both switches.

What is a requirement to configure a trunking EtherChannel between two switches? The participating interfaces must be physically contiguous on a switch. The allowed range of VLANs must be the same on both switches. The participating interfaces must be on the same module on a switch. The participating interfaces must be assigned the same VLAN number on both switches.

Workstations are assigned with IP addresses in the 169.254.0.0/16 network.

What is a result when the DHCP servers are not operational in a network? Workstations are assigned with the IP address 0.0.0.0. Workstations are assigned with IP addresses in the 169.254.0.0/16 network. Workstations are assigned with IP addresses in the 10.0.0.0/8 network. Workstations are assigned with the IP address 127.0.0.1.

Configuring the EtherChannel interface provides consistency in the configuration of the physical links.

What is an advantage of EtherChannel? Load balancing occurs between links configured as different EtherChannels. Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state. Configuring the EtherChannel interface provides consistency in the configuration of the physical links. EtherChannel uses upgraded physical links to provide increased bandwidth.

It can provide relay services for multiple UDP services.

What is an advantage of configuring a Cisco router as a relay agent? It can provide relay services for multiple UDP services. It will allow DHCPDISCOVER messages to pass without alteration. It can forward both broadcast and multicast messages on behalf of clients. It reduces the response time from a DHCP server.

It allows the use of multivendor devices.

What is an advantage of using LACP? It eliminates the need for configuring trunk interfaces when deploying VLANs on multiple switches. It provides a simulated environment for testing link aggregation. It allows the use of multivendor devices. LACP allows Fast Ethernet and Gigabit Ethernet interfaces to be mixed within a single EtherChannel. It decreases the amount of configuration that is needed on a switch.

The computer receives an IP address that starts with 169.254.

What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server? The computer cannot ping 127.0.0.1. The computer receives an IP address that starts with 169.254. The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range. Windows displays a DHCP timeout message.

Easy IP address management

What is the reason that an ISP commonly assigns a DHCP address to a wireless router in a SOHO environment? Easy IP address management Better network performance Easy configuration on ISP firewall Better connectivity

The Cisco router will exclude 15 IP addresses from being leased to DHCP clients.

What is the result of a network technician issuing the command ip dhcp excluded-address 10.0.15.1 10.0.15.15 on a Cisco router? The Cisco router will allow only the specified IP addresses to be leased to clients. The Cisco router will exclude 15 IP addresses from being leased to DHCP clients. The Cisco router will exclude only the 10.0.15.1 and 10.0.15.15 IP addresses from being leased to DHCP clients. The Cisco router will automatically create a DHCP pool using a /28 mask.

Data VLAN

What type of VLAN should not carry voice and network management traffic? Voice VLAN Management VLAN Security VLAN Data VLAN

Broadcast DHCPREQUEST

Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server? Broadcast DHCPREQUEST Broadcast DHCPACK Unicast DHCPREQUEST Unicast DHCPACK

Auto and Desirable

Which channel-group modes would place an interface in a negotiating state using PAgP? Passive and Auto On and Active Auto and Desirable On and Auto

IP address dhcp

Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled? IP helper-address IP address dhcp Service dhcp IP dhcp pool

A DHCPREQUEST unicast message​

Which kind of message is sent by a DHCP client when its IP address lease has expired?​ A DHCPREQUEST broadcast message​ A DHCPREQUEST unicast message​ A DHCPDISCOVER unicast message​ A DHCPDISCOVER broadcast message

DHCPREQUEST

Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server? DHCPACK DHCPOFFER DHCPDISCOVER DHCPREQUEST

SW1: on and SW2: on

Which mode configuration setting would allow the formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic? SW1: auto and SW2: auto with PortFast enabled on both switches SW1: passive and SW2: active SW1: on and SW2: on SW1: auto and SW2: auto with trunking enabled on both switches SW1: desirable and SW2: desirable

IP dhcp excluded-address 192.168.100.1 192.168.100.10 AND IP dhcp excluded-address 192.168.101.254

Which set of commands will configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment? IP dhcp excluded-address 192.168.100.1 192.168.100.10 AND IP dhcp excluded-address 192.168.101.254 IP dhcp excluded-address 192.168.10.1 192.168.10.10 AND IP dhcp excluded-address 192.168.100.254 IP dhcp excluded-address 192.168.100.1 192.168.100.10 AND IP dhcp excluded-address 192.168.100.254 IP dhcp excluded-address 192.168.100.1 192.168.100.9 AND IP dhcp excluded-address 192.168.101.254

It is made by combining multiple physical links that are seen as one link between two switches.

Which statement describes a characteristic of EtherChannel? It can combine up to a maximum of 4 physical links. It can bundle mixed types of 100 Mb/s and 1Gb/s Ethernet links. It consists of multiple parallel links between a switch and a router. It is made by combining multiple physical links that are seen as one link between two switches.

When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.​

Which statement is true about DHCP operation?​ A client must wait for lease expiration before it sends another DHCPREQUEST message.​ If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREQUEST message to the server from which it chooses to obtain the IP information. The DHCPDISCOVER message contains the IP address and subnet mask to be assigned, the IP address of the DNS server, and the IP address of the default gateway.​ When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.​

It is Cisco proprietary.

Which statement is true regarding the use of PAgP to create EtherChannels? It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation. It requires more physical links than LACP does. It is Cisco proprietary. It requires full duplex. It increases the number of ports that are participating in spanning tree.

LACP

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link? LACP PAgP Multilink PPP DTP

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router configuration, what is causing the problem? Each subinterface of Fa0/0 needs separate no shutdown commands. Routers do not support 802.1Q encapsulation on subinterfaces. IP addresses on the subinterfaces are incorrectly matched to the VLANs. Interface Fa0/0 is missing IP address configuration information.

They are configured as trunk interfaces.

Refer to the exhibit. A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output? They are configured as trunk interfaces. They are administratively shut down. There is no media connected to the interfaces. There is a native VLAN mismatch between the switches.

The encapsulation dot1Q 5 command contains the wrong VLAN.

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem? The no shutdown command is not entered on subinterfaces. Gi0/0 is not configured as a trunk port. The encapsulation dot1Q 5 command contains the wrong VLAN. The command interface GigabitEthernet0/0.5 was entered incorrectly. There is no IP address configured on the interface Gi0/0.

4

Refer to the exhibit. A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will have to be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface? 5 4 3 2 1

8

Refer to the exhibit. How many broadcast domains are displayed? 16 4 8 1 55

VLAN information

Which parameter must match on the ports of two switches to create a PAgP EtherChannel between the switches? MAC address Port ID PAgP mode VLAN information

Root port

Which port role is assigned to the switch port that has the lowest cost to reach the root bridge? Disabled port Designated port Non-designated port Root port

SSH

Which protocol adds security to remote connections? NetBEUI HTTP SSH FTP POP

It disables redundant paths to eliminate Layer 2 loops.

What is the function of STP in a scalable network? It combines multiple switch trunk links to act as one logical link for increased bandwidth. It protects the edge of the enterprise network from malicious activity. It decreases the size of the failure domain to contain the impact of failures. It disables redundant paths to eliminate Layer 2 loops.

Removing single points of failure with multiple Layer 2 switches

Which network design feature require Spanning Tree Protocol (STP) to ensure correct network operation? Removing single points of failure with multiple Layer 2 switches Link-state dynamic routing that provides redundant routes Implementing VLANs to contain broadcasts Static default routes

Layer 2 switch using SVI

Which of the following is NOT an inter-VLAN routing option? Legacy Layer 2 switch using SVI Layer 3 switch using SVI Router-on-a-Stick

Switchport mode trunk

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?​ Switchport mode dynamic desirable Switchport mode access Switchport mode trunk No switchport

Gi1/1 is configured as trunk mode.

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PCs on different VLANs cannot communicate. Based on the output, what is one configuration errors on switch interface Gi1/1? Negotiation of trunking is turned on on Gi1/1. The trunking encapsulation protocol is configured wrong. Voice VLAN is not assigned to Gi1/1. Gi1/1 is configured as trunk mode.

Trunk

Refer to the exhibit. In what switch mode should port G0/1 be assigned if Cisco best practices are being used? Auto Native Access Trunk

Interface G0/2 is not configured as a trunk.

Refer to the exhibit. PC1 is unable to communicate with server 1. The network administrator issues the show interfaces trunk command to begin troubleshooting. What conclusion can be made based on the output of this command? VLAN 20 has not been created. Interface G0/2 is not configured as a trunk. The DTP mode is incorrectly set to dynamic auto on interface G0/1. The encapsulation on interface G0/1 is incorrect.

It enters the global configuration mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw# configure terminal command? It enters configuration mode for a switch virtual interface. It enters the global configuration mode. It applies an IPv4 address to the virtual interface. It permits an IPv6 address to be configured on a switch physical interface. It updates the MAC address table for the associated port.

High port density

Which switch characteristic helps keep traffic local and alleviates network congestion? Fast internal switching Large frame buffers High port density Fast port speed

Dynamic Auto | Passively waits for the neighbor to initiate trunking Nonegotiate | Requires manual configuration of trunking or non trunking Dynamic Desirable | Actively attempts to convert the link to a trunk Trunk | Permanent trunking mode

Match the DTP mode with its function. (Not all options are used.) A) Dynamic Auto B) Nonegotiate C) Dynamic Desirable D) Trunk 1) Passively waits for the neighbor to initiate trunking 2) Requires manual configuration of trunking or non-trunking 3) Actively attempts to convert the link to a trunk 4) Permanent trunking mode 5) Permanent non-trunking mode

STP | The legacy standard for STP that runs all VLANs in a single spanning-tree instance MSTP | A protocol that allows muliple VLANs to run in a single spanning tree instance RSTP | An evolution of STP that provides faster convergence

Match the STP protocol with the correct description. (Not all options are used.) A) STP B) MSTP C) RSTP 1) The legacy standard for STP that runs all VLANs in a single spanning-tree instance 2) A protocol that allows multiple VLANs to run in a single spanning-tree instance 3) A Cisco enhancement of RSTP to provide a spanning-tree instance for each VLAN 4) An evolution of STP that provides faster convergence

The ports stop communicating with the attached devices.

What happens to switch ports after the VLAN to which they are assigned is deleted? The ports are assigned to VLAN1, the default VLAN. The ports are placed in trunk mode. The ports are disabled. The ports stop communicating with the attached devices.

Source MAC address and incoming port number

What information is added to the switch table from incoming frames? Destination MAC address and incoming port number Source IP address and incoming port number Source MAC address and incoming port number Destination IP address and incoming port number

New traffic is discarded by the switch because it is unable to be processed.

What is the outcome of a Layer 2 broadcast storm? Routers will take over the forwarding of frames as switches become congested. ARP broadcast requests are returned to the transmitting host. CSMA/CD will cause each host to continue transmitting frames. New traffic is discarded by the switch because it is unable to be processed.

Prevents Layer 2 loops

What is the purpose of the Spanning Tree Protocol (STP)? Allows Cisco devices to exchange routing table updates Creates smaller collision domains Prevents Layer 2 loops Prevents routing loops on a router Creates smaller broadcast domains

Voice VLAN

What type of VLAN is designed to have a delay of less than 150 ms across the network? Security VLAN Desirable VLAN Trunk VLAN Voice VLAN

Voice VLAN

What type of VLAN is designed to reserve bandwidth to ensure IP Phone quality? Management VLAN Security VLAN Trunk VLAN Voice VLAN

Data VLAN

What type of VLAN is used to separate the network into groups of users or devices? Management VLAN Data VLAN Native VLAN Voice VLAN

Native VLAN

What type of VLAN supports untagged traffic? Security VLAN Native VLAN Management VLAN Voice VLAN

Show controllers

Which command displays information about the auto-MDIX setting for a specific interface?​ Show controllers Show processes Show running-config Show interfaces

Show interfaces Fa0/1 switchport

Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface? Show mac address-table interface Fa0/1 Show vlan brief Show interfaces Fa0/1 switchport Show interfaces trunk

MST

Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard? STP Rapid PVST+ PVST+ MST

A switch with a port that is configured as a trunk is needed when connecting to the router.

A high school uses VLAN15 for the laboratory network and VLAN30 for the faculty network. What is required to enable communication between these two VLANs while using the router-on-a-stick approach? A switch with a port that is configured as a trunk is needed when connecting to the router. Two groups of switches are needed, each with ports that are configured for one VLAN. A router with at least two LAN interfaces is needed. A multilayer switch is needed.

The VLAN assignment and membership for all switch ports

A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed? The VLAN assignment and trunking encapsulation The VLAN assignment and membership for all switch ports The VLAN assignment and native VLAN The VLAN assignment and membership for device MAC addresses

61440

A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root? 61440 4096 32768 65535

28672

A small company network has six interconnected Layer 2 switches. Currently, all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design? 1 61440 28672 34816 32768

It returns to global configuration mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# exit command? It returns to privileged mode. It configures the default gateway for the switch. It returns to global configuration mode. It enters user mode. It saves the startup configuration to the running configuration.

It applies an IPv4 address to the virtual interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ip address 172.18.33.88 255.255.255.0 command? It updates the MAC address table for the associated port. It activates a virtual or physical switch interface. It applies an IPv4 address to the virtual interface . It permits an IPv6 address to be configured on a switch physical interface. It applies an IPv6 address to the virtual interface.

It applies an IPv6 address to the virtual interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ipv6 address 2001:db8:a2b4:88::1/64 command? It applies an IPv6 address to the virtual interface. It permits an IPv6 address to be configured on a switch physical interface. It applies an IPv4 address to the virtual interface. It updates the MAC address table for the associated port. It activates a virtual or physical switch interface.

It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# mdix auto command? It updates the MAC address table for the associated port. It applies an IPv4 address to the virtual interface. It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable. It applies an IPv6 address to the virtual interface. It permits an IPv6 address to be configured on a switch physical interface.

It disables a virtual or physical switch interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# shutdown command? It saves the startup configuration to the running configuration. It disables a virtual or physical switch interface. It activates a virtual or physical switch interface. It saves the running configuration to NVRAM. It updates the MAC address table for the associated port.

It enters privileged mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw> enable command? It enters the global configuration mode. It updates the MAC address table for the associated port. It enters configuration mode for a switch virtual interface. It permits an IPv6 address to be configured on a switch physical interface . It enters privileged mode.

After POST execution

After which step of the switch bootup sequence is the boot loader executed? After CPU initialization After POST execution After IOS localization After flash file system initialization

They store frames received, thus preventing premature frame discarding when network congestion occurs.

How do switch buffers affect network performance? They hold data temporarily when a collision occurs until normal data transmission resumes. They store frames received, thus preventing premature frame discarding when network congestion occurs. They provide extra memory for a particular port if autonegotiation of speed or duplex fails. They provide error checking on the data received.

Lowest MAC address

If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge? Highest IP address Lowest MAC address Highest MAC address Lowest IP address

Learning

In which PVST+ port state is MAC addresses learned? Learning Disabled Blocking Listening

Cisco Implementation of IEEE 802.1D | PSVT+ Fast converging enhancement of IEEE 802.1D | RSTP IEEE standard that reduces the number of STP instances | MSTP Proprietary per VLAN implementation of IEEE 802.1w | RA

Match the spanning-tree feature with the protocol type. (Not all options are used.) A) Cisco implementation of IEEE 802.1D B) Fast converging enhancement of IEEE 802.1D C) IEEE standard that reduces the number of STP instances D) Proprietary per VLAN implementation of IEEE 802.1w 1) PVST+ 2) RSTP 3) MSTP 4) Rapid PVST+ 5) MST

Switch(config)# no vlan 100

On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch? Switch(config-if)# no switchport access vlan 100 Switch(config)# no vlan 100 Switch# delete flash:vlan.dat Switch(config-if)# no switchport trunk allowed vlan 100

Port Fa0/11 will be returned to VLAN 1.

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen? Port Fa0/11 will be shutdown. Port Fa0/11 will be returned to VLAN 1. An error message would be displayed. VLAN 30 will be deleted.

Trunk port

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What type of port will be required on a switch that is connected to Gi0/0 on router CiscoVille to allow inter-VLAN routing? Trunk port Access port Routed port SVI

It identifies the VLAN number.

Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic? It identifies the subinterface. It identifies the native VLAN number. It identifies the VLAN number. It identifies the type of encapsulation that is used. It identifies the number of hosts that are allowed on the interface.

There is an incorrect IP address configured on GigabitEthernet 0/0.30.

Refer to the exhibit. A router-on-a-stick configuration was implemented for VLANs 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the 172.16.45.0 /24 network are having trouble connecting to PCs on VLAN 30 in the 172.16.30.0 /24 network. Which error is most likely causing this problem?​ The GigabitEthernet 0/0 interface is missing an IP address. The wrong VLAN has been configured on GigabitEthernet 0/0.45. The command no shutdown is missing on GigabitEthernet 0/0.30. There is an incorrect IP address configured on GigabitEthernet 0/0.30.

* First the switch adds the source mac address to the mac address table * Then since the destination address is not in the table, the switch sends out the frame on all ports except on the one it was received on.

Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.) The switch adds the source MAC address to the MAC address table. Because the destination is not known, the switch forwards the frame out all ports except the port through which the frame arrived. The switch adds the destination MAC address to the MAC address table. Because the source MAC address is not known, the switch broadcasts the frame out all ports except the port through which the frame arrived. The switch drops the frame.

Allow VLAN 20 on the trunk link.

Refer to the exhibit. All workstations are configured correctly in VLAN 20. Workstations that are connected to switch SW1 are not able to send traffic to workstations on SW2. What could be done to remedy the problem? Allow VLAN 20 on the trunk link. Configure all workstations on SW2 to be part of the native VLAN. Configure all workstations on SW1 to be part of the default VLAN. Enable DTP on both ends of the trunk.

Modify the transport input command.

Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement? Modify the transport input command. Configure SSH on a different line. Reconfigure the RSA key. Use SSH version 1.

Alternate, designated, root, root

Refer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network? Alternate, root, designated, root Designated, root, alternate, root Alternate, designated, root, root Designated, alternate, root, root

The encapsulation dot1Q 20 command has not been configured.​

Refer to the exhibit. What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille? The gig0/0 interface does not support inter-VLAN routing. The encapsulation dot1Q 20 command has not been configured.​ The IP address on CiscoVille is incorrect. The no shutdown command has not been configured.

S2

Refer to the exhibit. Which switch will be the root bridge after the election process is complete? S3 S2 S1 S4

On links that should not be trunking

Under which occasion should an administrator disable DTP while managing a local area network? On links that should dynamically attempt trunking When a neighbor switch uses a DTP mode of dynamic auto When a neighbor switch uses a DTP mode of dynamic desirable On links that should not be trunking

BOOT environment variable

What does a switch use to locate and load the IOS image? IOS image file POST Startup-config NVRAM BOOT environment variable

Source MAC Address

What does the switch use to build its MAC address table? Destination MAC Address Source IP Address Destination IP address Source MAC Address

The number of available ports

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

It is not assigned to a VLAN.

What is a characteristic of a routed port on a Layer 3 switch? It is not assigned to a VLAN. It is commonly used as a WAN link. It cannot have an IP address assigned to it. It supports trunking.

It is a logical interface internal to the router.

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​ Only one loopback interface can be enabled on a router.​ It is a logical interface internal to the router. The no shutdown command is required to place this interface in an UP state.​ It is assigned to a physical port and can be connected to other devices.

It is enabled by default on Cisco switches.

What is a characteristic of spanning tree? It is enabled by default on Cisco switches. It prevents propagation of Layer 2 broadcast frames. It has a TTL mechanism that works at Layer 2. It is used to discover information about an adjacent Cisco device.

The MAC address table becomes unstable.

What is a drawback to turning spanning tree off and having multiple paths through the Layer 2 switch network? Port security becomes unstable. Port security shuts down all of the ports that have attached devices. The MAC address table becomes unstable. The switch acts like a hub.

Determines which interface is used to forward a frame based on the destination MAC address

What is one function of a Layer 2 switch? Forwards data based on logical addressing Determines which interface is used to forward a frame based on the destination MAC address Learns the port assigned to a host by examining the destination MAC address Duplicates the electrical signal of each frame to every port

Check the physical layer to resolve any issues where a cable might be connected to the wrong port.

What is the first step in troubleshooting Inter-VLAN routing? Check for missing VLANs Check the physical layer to resolve any issues where a cable might be connected to the wrong port. Check for router configuration issues Check for switch trunk port issues

64 bytes

What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame? 1024 bytes 512 bytes 64 bytes 1500 bytes

A hub extends a collision domain, and a switch divides collision domains.

What is the significant difference between a hub and a Layer 2 LAN switch? A hub forwards frames, and a switch forwards only packets. A hub extends a collision domain, and a switch divides collision domains. Each port of a hub is a collision domain, and each port of a switch is a broadcast domain. A hub divides collision domains, and a switch divides broadcast domains.

The path cost

What is the value used to determine which port on a non-root bridge will become a root port in a STP network? The lowest MAC address of all the ports in the switch The VTP revision number The path cost The highest MAC address of all the ports in the switch

Fragment-free

What type of switching method examines the first 64-bytes of a frame to make sure no fragmentation has occurred? Store-and-process Fragment-free Store-and-Forward Rapid frame-forwarding

FCS

What value does a switch use to check for errors in a frame? Frame header length Packet header length VLAN ID FCS

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

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. Send the frame to the default gateway. Forward the frame out all ports except for the port where the frame is received. Use ARP to resolve the port that is related to the frame.

Multiple subinterfaces may impact the traffic flow speed.

When routing a large number of VLANs, what is a disadvantage of using the router-on-a-stick inter-VLAN routing method rather than the multilayer switch inter-VLAN routing method? Router-on-a-stick requires multiple physical interfaces on a router. Router-on-a-stick requires subinterfaces to be configured on the same subnets. Multiple subinterfaces may impact the traffic flow speed. Multiple SVIs are needed.

Designated

When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which port role could these interfaces function while in the forwarding state? Disabled Alternate Designated Blocked

CAM

Where is the switch table stored? CAM Flash ROM NVRAM

Frames are forwarded without any error checking.

Which characteristic describes cut-through switching? Error-free fragments are forwarded, so switching occurs with lower latency. Only outgoing frames are checked for errors. Frames are forwarded without any error checking. Buffering is used to support different Ethernet speeds.

The native VLAN traffic will be untagged across the trunk link.

Which characteristic describes the native VLAN? This VLAN is necessary for remote management of a switch. The native VLAN traffic will be untagged across the trunk link. Designed to carry traffic that is generated by users, this type of VLAN is also known as the default VLAN. High priority traffic, such as voice traffic, uses the native VLAN.

Fast boot environment

Which characteristic of a switch does NOT alleviate network congestion? Large Frame Buffers Fast boot environment High Port Density Fast Internal Switching Fast port speeds

Boot system

Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch? Config-register Boot system Boot loader Confreg

An increase in the size of the broadcast domain

Which impact does adding a Layer 2 switch have on a network? An increase in the number of network collisions An increase in the size of the broadcast domain An increase in the size of the collision domain An increase in the number of dropped frames

Port ID

Which is NOT a component combined to form a bridge ID? Port ID MAC address Extended system ID Bridge priority

Switch

Which network device can be used to eliminate collisions on an Ethernet network? Switch Hub Router Firewall

Router

Which network device can serve as a boundary to divide a Layer 2 broadcast domain? Router Ethernet bridge Ethernet hub Access point

A high port density switch

Which solution would help a college alleviate network congestion due to collisions? A router with three Ethernet ports A router with two Ethernet ports A firewall that connects to two Internet providers A high port density switch

802.1D

Which spanning-tree standard supports only one root bridge so that traffic from all VLANs flows over the same path? PVST+ 802.1D Rapid PVST MST

A trunked port can be part of an EtherChannel bundle.

Which statement describes an EtherChannel implementation? EtherChannel operates only at Layer 2. A trunked port can be part of an EtherChannel bundle. EtherChannel can support up to a maximum of ten separate links. PAgP cannot be used in conjunction with EtherChannel.

Switching packets is faster with SVI.

Which statement is correct with respect to SVI inter-VLAN routing? SVIs eliminate the need for a default gateway in the hosts. SVIs can be bundled into EtherChannels. Switching packets is faster with SVI. Virtual interfaces support subinterfaces.

ASIC

Which switch component reduces the amount of packet handling time inside the switch? Dual processors Store-and-forward RAM ASIC Large buffer size

Store-and-forward

Which switching method ensures that the incoming frame is error-free before forwarding? Cut-through Store-and-forward FCS Fragment free

Native

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port? Management Default Native Data

It allows data to flow in both directions at the same time on the interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# duplex full command? It allows data to flow in only one direction at a time on the interface It encrypts user-mode passwords when users connect remotely. It configures the switch as the default gateway. It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable. It allows data to flow in both directions at the same time on the interface.

Frame buffering

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port? Fast internal switching Frame buffering Fast port speed High port density

Frame forwarding decisions are based on MAC address and port mappings in the CAM table.

Which statement is correct about Ethernet switch frame forwarding decisions? Only frames with a broadcast destination address are forwarded out all active switch ports. Frame forwarding decisions are based on MAC address and port mappings in the CAM table. Unicast frames are always forwarded regardless of the destination MAC address. Cut-through frame forwarding ensures that invalid frames are always dropped.

Configure the interface as an IEEE 802.1Q trunk.

Which step is NOT needed to configure a voice VLAN on a switch port? Add a voice VLAN. Configure the switch port in access mode. Configure the interface as an IEEE 802.1Q trunk. Ensure that voice traffic is trusted and tagged with a CoS priority value. Assign the voice VLAN to the switch port.

Default VLAN

What type of VLAN is initially the management VLAN? Management VLAN Data VLAN Native VLAN Default VLAN