Cisco Project/Based Learning/ Access WAN Chapter 19,20,21

What is the MAC address that is used by HSRP version 2?

0000.0C9F.Fxxx

How many active routers can be forwarding at the same time with HSRP?

1

Refer to the exhibit; which option would correctly configure a router into a ROAS configuration for four different VLANS (100, 200, 300, and 400). leaving the physical interface to handle native VLAN traffic?

1

Review the topology diagram. HSRP has been configured on the routers to support VLAN 10, 20, and 30 with fault-tolerant default gateways. The virtual IP address the devices in VLAN 10 use is 10.0.0.50. VLAN 10 contains more than ten hosts. How many of the routers will be actively forwarding traffic for the VLAN 10 users?

1

When using HSRP in a single group redundancy deployment, how many forwarders are allowed to actively handle user traffic at the same time?

1

What is the default HSRP priority value?

100

Refer to the exhibit; which route shown would be the one used to reach the device configured with the 172.16.1.130 IP address?

172.16.1.128/26 [1/0]

Refer to the exhibit; which route shown would be the one used to reach the device configured with the 172.16.1.130 IP address? (ignore this paranthesis, there are two questions like this)

172.16.1.128/26 [110/2]

Which IPv4 multicast address is used for communication with HSRP version 1?

224.0.0.2

If configuring a layer 3 EtherChannel using two physical interfaces, how many different times must the no switchport command be configured?

3

A LAN design uses a Layer 3 EtherChannel between two switches SW1 and SW2, with port-channel interface 1 used on both switches. SW1 uses ports G0/1 and G0/2 in the channel. However, only interface G0/1 is bundled into the channel and working. Think about the configuration settings on port G0/2 that could have existed before adding G0/2 to the EtherChannel. Which answers identify a setting that could prevent IOS from adding G0/2 to the Layer 3 EtherChannel? (Choose two answers.)

A default setting for switchport (switchport) A different speed (speed value)

Refer to the diagram and exhibit; a trouble ticket has been opened and states that a user is having connectivity problems from their PC. Which option is the root cause of these issues? PC1 IP address: 10.100.100.40 Subnet Mask: 255.255.255.128 Gateway: 10.100.100.129 DNS Server: 172.16.1.1 R1 ... ! interface GigabitEthernet0/0 ip address 10.100.100.129 255.255.255.128 duplex auto speed auto ! SW1 ... ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! ...

An incorrect IP address.

Refer to the diagram and exhibit; a trouble ticket has been opened and states that a user is having connectivity problems from their PC. Which options are the root cause of these issues? (Choose two answers.)

An incorrect IP address. An incorrect subnet mask.

Refer to the diagram and exhibit; a trouble ticket has been opened and states that a user is having connectivity problems from their PC. Which option is the root cause of these issues? PC1IP address: 10.100.100.140 Subnet Mask: 255.255.255.0 Gateway: 10.100.100.10DNS Server: 172.16.1.1R1...!interface GigabitEthernet0/0 ip address 10.100.100.129 255.255.255.0 duplex autospeed auto! SW1...!interface GigabitEthernet0/1! interface GigabitEthernet0/2!

An incorrect gateway address

R1 and R2 attach to the same Ethernet VLAN, with subnet 10.1.19.0/25, with addresses 10.1.19.1 and 10.1.19.2, respectively, configured with the ip address interface subcommand. The routers use HSRP. The network engineer prefers to have R1 be the default router when both R1 and R2 are up. Which of the following is the likely default router setting for hosts in this subnet?

Another IP address in subnet 10.1.19.0/25 other than 10.1.19.1 and 10.1.19.2

What is the most likely problem if a ping fails when using a device's hostname but not when using the device's IP address?

DNS

Which incorrect setting on a host device would cause it to have normal local connectivity but no ability to communicate off the local subnet?

Default router

If a speed mismatch was configured between two Cisco routers' Ethernet interfaces, what would be the status of this interface?

Down/down

What is the resulting router interface state when its connecting switchport has been err-disabled?

Down/down

Router R1 has a router-on-a-stick (ROAS) configuration with two subinterfaces of interface G0/1: G0/1.1 and G0/1.2. Physical interface G0/1 is currently in a down/down state. The network engineer then configures a shutdown command when in interface configuration mode for G0/1.1, and a no shutdown command when in interface configuration mode for G0/1.2. Which answers are correct about the interface state for the subinterfaces? (Choose two answers.)

G0/1.2 will be in a down/down state. G0/1.1 will be in an administratively down state.

Which options are correct about HSRP versions? (Choose three answers.)

HSRP version 1 uses the 224.0.0.2 multicast address. HSRP version 2 uses the 0000.0C9F.Fxxx virtual MAC address format. The default HSRP version is 1.

Which options are correct about HSRP versions? (Choose two answers.)

HSRP version 2 uses the 224.0.0.102 multicast address. The default HSRP version is 1.

The following text lists output taken from Router R3, which is using HSRP. Subnet 10.1.12.0 uses mask 255.255.255.0. Based on the output of this command, which of the following answers is true?

Hosts with a default router setting of 10.1.12.2 are sending their packets to Router R3.

R1 and R2 attach to the same Ethernet VLAN, with subnet 10.1.19.0/25, with addresses 10.1.19.1 and 10.1.19.2, respectively, configured with the ip address interface subcommand. Host A refers to 10.1.19.1 as its default router, and host B refers to 10.1.19.2 as its default router. The routers do not use an FHRP. Which of the following is a problem for this LAN?

If one router fails, the host that uses that router as a default router cannot send packets off-subnet.

A Layer 3 switch has been configured to route IP packets between VLANs 1, 2, and 3 using SVIs, which connect to subnets 172.20.1.0/25, 172.20.2.0/25, and 172.20.3.0/25, respectively. The engineer issues a show ip route connected command on the Layer 3 switch, listing the connected routes. Which of the following answers lists a piece of information that should be in at least one of the routes?

Interface VLAN 2

When looking at the output of the show ip route command on a Cisco IOS 15+ router, what does the IA code mean?

OSPF inter-area route

Two routers, R1 and R2, are configured to be part of an HSRP group. R1's configuration includes the standby 1 priority 1 command, and R2's configuration includes the standby 1 priority 2 command. R1 powers up. An hour later, R2 powers up. Which of the following answers is true about which router is now the HSRP active router?

R2 is active only if R2 is also configured with standby 1 preempt.

Refer to the diagram and exhibit; which options are true? (Choose two answers.) version 2 (ignore this line)

R2 is configured with a higher priority or IP address. R1 is configured to preempt.

Refer to the diagram and exhibit; which options are true? (Choose two answers.)

R2 is using a non-default priority. The standby 15 ip 172.16.1.5 command is configured on R1.

Refer to the diagram and exhibit; which is true about the operation of the HSRP, assuming R2 was powered on first?

R2 would be the HSRP active router.

If the options shown all matched as routing options within the routing table for a specific destination, which one would be selected?

RIP route with a prefix length of /26

In which scenarios would a LAN subnet configured with two routers configured with HSRP lose off subnet communications when one of the routers failed?

Routers configured with different virtual IPs

Refer to the exhibit. What information can be derived from the output? Each correct answer represents a complete solution. Choose two. 2911-1#s how standby brief P indicates configured to preempt.

The 2911-1 router is the active router. The active router uses a nondefault priority.

Refer to the diagram and exhibit; a trouble ticket has been opened and states that a user is having connectivity problems from their PC. Which option is the root cause of these issues? PC1 IP address: DHCP Subnet Mask: DHCP Gateway: DHCP DNS Server: DHCP (click on exhibit to see the difference)

The DHCP relay configuration is incorrect.

Refer to the exhibit; what options are true about the output?

The SVI is down because the VLAN is shut down.

For a VLAN SVI to be in the up/up state, which option is not required?

The VLAN must have an entry in the MAC address table.

Refer to the exhibit; the message shown was given on a Cisco 2960 switch configured in lanbase routing mode. What is likely the reason for its display?

The ip routing command has not been issued.

Refer to the figure. Over what links does a packet traverse if the ping 172.16.1.1 command was issued on PC1 (assuming distance vector routing rules)?

The link between PC1 and R1

Refer to the exhibit; what does the '151' in the route learned by OSPF signify?

The metric

Refer to the diagram and exhibit; an engineer is checking the work of a co-worker who is responsible for developing the ROAS configuration of R1. Which options are true of the potential configuration of R1? (Choose two answers.)

The physical interface has a command that is invalid. The interfaces handling the VLAN 30 and 40 traffic have their assignment commands reversed.

An engineer is attempting to resolve a recurring HSRP problem on a local LAN; it is reported that when engineers work on the primary router, the secondary router doesn't work correctly because users are unable to connect to devices off the local network. When the engineer views the status of HSRP on the primary router, it shows it is active and that the secondary router is passive with the correct configuration. What could be the problem?

The secondary router is configured with the wrong virtual IP address.

Another engineer has configured HSRP on two routers that connect to the same LAN. You connect to the console of one of the routers, and see this log message:

The two HSRP routers are configured with different HSRP group numbers. The two HSRP routers are configured with different HSRP version numbers.

Refer to the diagram; what is likely the root problem when these messages are displayed?

There is an HSRP version mismatch.

When looking at the output of the show ip route command on a Cisco IOS 15+ router, what does the L code mean?

This is a local host route.

Which protocol and port number are used by HSRP?

UDP, 1985

Which of the LAN routing options shown is not typically used?

Using a router with a physical interface associated with each individual VLAN

Which FHRP available for configuration on Cisco devices is not proprietary?

VRRP

Refer to the figure. Does a single point of failure exist in the topology shown? If so, where?

Yes, between SW2 and R2

Refer to the figure. If the DHCP clients are located off the 172.16.0.0/24 network, would the ip helper command be required for the clients to retrieve an IP address from the DHCP server? If so, where would the command be placed?

Yes, on R1's Gi0/2 interface

Refer to the figure. Assuming that R1 and R2 have been configured correctly with HSRP, do SW1 and/or SW2 have to do anything upon HSRP failover? If so, what?

Yes; their MAC address tables will have to be altered.

The figure displays an example of ___________. bottom is 172.16.0.1/28 pc2 172.16.1.1/28

an IP address overlap when not using VLSM

The figure displays an example of ___________.

an IP address overlap when using VLSM

Refer to the diagram and exhibit; which option shows the correct configuration of the Layer 3 EtherChannel displayed on R1?

c

Which Cisco IOS command(s) would be used to configure an interface in a static layer 3 EtherChannel? Each correct answer represents a complete solution. Choose two.

channel-group number mode on no switchport

Refer to the diagram; which Cisco IOS command would be configured on R1's Gi0/0.200 interface so that it handles all traffic marked for VLAN 200?

encapsulation dot1q 200

Refer to the diagram; which Cisco IOS command would be configured on R1's Gi0/0.300 interface so that it handles all non-marked traffic from VLAN 300?

encapsulation dot1q 300 native

Which Cisco IOS command is used to enable a router subinterface with 802.1Q and associate it with a specific VLAN?

encapsulation dot1q vlan-id

Which Cisco IOS command would be used to configure a router subinterface to handle any native VLAN traffic?

encapsulation dot1q vlan-id native

Router 1 has a Fast Ethernet interface 0/0 with IP address 10.1.1.1. The interface is connected to a switch. This connection is then migrated to use 802.1Q trunking. Which of the following commands could be part of a valid configuration for Router 1's Fa0/0 interface? (Choose two answers.)

interface fastethernet 0/0.4 encapsulation dot1q 4

Which Cisco IOS command is required when the DHCP server is not located on the local LAN?

ip helper-address dns-ip-address

Which Cisco IOS command is used to enable IPv4 routing on a 2960 series switch?

ip routing

Which Cisco IOS command is used to disable a device from performing naming lookups?

no ip domain-lookup

Which Cisco IOS command is used to enable a switch interface to become a routed port?

no switchport

Which Cisco IOS command would be used on a switched interface to enable it to become a routed interface?

no switchport

Which Cisco IOS command is used on a 2960 switch to change the switch forwarding ASIC settings to make space for IPv4 routes?

sdm prefer lanbase-routing

Which Cisco IOS command is used to make memory space available for IPv4 routes on a 2960 series of switches?

sdm prefer lanbase-routing

Which Cisco IOS command can be used on a switch to verify that an interface has been configured as a routed port by indicating that it is "routed"?

show interface status

Which Cisco IOS command can be used on a switch to ensure that the interface connecting to a router configured as a ROAS is trunking?

show interfaces trunk

Which Cisco IOS command can be used on a switch to verify that a trunk has been configured on the interface connected to a router configured with ROAS and the VLANs that are allowed, not blocked, and not pruned?

show interfaces trunk

Which Cisco IOS command can be used on a router to view the different VLANs that have been configured into a ROAS configuration?

show vlans

Which Cisco IOS command can be used to display the ROAS configuration on a router?

show vlans

Which Cisco IOS command would be used to enable a router's interface into HSRP group 10 using a virtual IP address of 10.10.10.6?

standby 10 ip 10.10.10.6

Which Cisco IOS command would be used to configure HSRP on an interface using a group number of 10 and a virtual IP address of 192.168.1.5?

standby 10 ip 192.168.1.5

What is the Cisco IOS command that would be used to enable HSRP preemption for group 10?

standby 10 preempt

Which Cisco IOS command would be used to configure the HSRP version on an interface?

standby version version

When configuring a switch to connect to a router that is being configured with a ROAS configuration, which Cisco IOS command must be entered on the interface to ensure that the link forms a trunk?

switchport mode trunk