Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 931:

  Refer to the exhibit.

  

  According to the given show line output, which type of line is connected to the router?

  A. auxiliary
  B. Telnet
  C. terminal
  D. Console
  E. SSH
  A. auxiliary

• Question 932:

  Which two options are requirements to implement 6VPE? (Choose two.)

  A. MPLS between PEs
  B. 6-in-4 tunnels between PEs
  C. MP-BGP VPNv6 exchange
  D. MP-BGP IPv6+label exchange
  E. Any Transport over MPLS
  F. IPv4/IPv6 dual-stack in core
  A. MPLS between PEs
  C. MP-BGP VPNv6 exchange

• Question 933:

  DRAG DROP

  Drag and drop the NetFlow Export feature on the left to the NetFlow version that first supported it on the right.

  Select and Place:

  

  

• Question 934:

  DRAG DROP

  Drag and drop each IPv6 neighbor discovery message type on the left to the corresponding description on the right.

  Select and Place:

  

  

• Question 935:

  Which statement describes the function of the tracking object created by the track 10 ip route 192.168.99.0/24 reachability command?

  A. It tracks the reachability of route 192.168.99.0/24.
  B. It tracks the line protocol status of the interface on which route 192.168.99.0/24 is received.
  C. It tracks exactly 10 occurrences of route 192.168.99.0/24.
  D. It tracks the summary route 192.168.99.0/24 and all routes contained within.
  A. It tracks the reachability of route 192.168.99.0/24.

  ---

  Command

  Purpose

  Step 1

  configure terminal

  Enter global configuration mode.

  Step 2

  track object-number {interface interface-id{line-protocol | ip routing} | ip route ip- address/prefix-length {metric threshold | reachability} | list {boolean {and | or}} | { threshold {weight | percentage}}}

  (Optional) Create a tracking list to track the configured state and enter tracking configuration mode.

  ?

  ?

  Enter interface interface-id to select an interface to track.

  ?

  Enter line-protocol to track the interface line protocol state or enter ip routing to track the

  interface IP routing state.

  ?

  Enter ip route ip-address/prefix-length to track the state of an IP route.

  ?

  Enter metric threshold to track the threshold metric or enter reachability to track if the

  route is reachable.

  The default up threshold is 254 and the default down threshold is 255.

  ?

  Enter list to track objects grouped in a list. Configure the list as described on the previous pages.

  Note

  Repeat this step for each interface to be tracked.

  Reference:

  http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12- 2_52_se/configuration/guide/3560scg/sweot.html

• Question 936:

  Drag Drop

  Select and Place:

  

  

• Question 937:

  Refer to the exhibit.

  

  A Cisco Catalyst 6500 Series Switch experiences high CPU utilization. What can be the cause of this issue, and how can it be prevented?

  A. The hardware routing table is full. Redistribute from BGP into IGP.
  B. The software routing table is full. Redistribute from BGP into IGP.
  C. The hardware routing table is full. Reduce the number of routes in the routing table.
  D. The software routing table is full. Reduce the number of routes in the routing table.
  C. The hardware routing table is full. Reduce the number of routes in the routing table.

  ---

  FIB TCAM Exception - If you try to install more routes than are possible into the FIB TCAM you will see the following error message in the logs:

  CFIB-SP-STBY-7-CFIB_EXCEPTION : FIB TCAM exception, Some entries will be software switched

  %CFIB-SP-7-CFIB_EXCEPTION : FIB TCAM exception, Some entries will be software switched. %CFIB-SP-STBY-7-CFIB_EXCEPTION : FIB TCAM exception, Some entries will be software switched.

  This error message is received when the amount of available space in the TCAM is exceeded. This results in high CPU. This is a FIB TCAM limitation. Once TCAM is full, a flag will be set and FIB TCAM exception is received. This stops from

  adding new routes to the TCAM. Therefore, everything will be software switched. The removal of routes does not help resume hardware switching. Once the TCAM enters the exception state, the system must be reloaded to get out of that

  state. You can view if you have hit a FIB TCAM exception with the following command: 6500-2#sh mls cef exception status Current IPv4 FIB exception state = TRUE Current IPv6 FIB exception state = FALSE Current MPLS FIB exception state = FALSE

  When the exception state is TRUE, the FIB TCAM has hit an exception. The maximum routes that can be installed in TCAM is increased by the mls cef maximum- routes command. Reference: https://supportforums.cisco.com/document/59926/troubleshooting-high-cpu- 6500-sup720

• Question 938:

  Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging process from the default 300 seconds to the current forward delay value?

  A. topology change bit
  B. topology change acknowledgment bit
  C. priority bit
  D. max-age bit
  A. topology change bit

  ---

  The Root Bridge continues to set the Topology Change flag (TCN bit) in all Configuration BPDUs that it sends out for a total of Forward Delay + Max Age seconds (default = 35 (20+15) seconds). This flag instructs all bridges to shorten their

  MAC address table (Bridge table) aging process from the default value of 300 seconds to the current Forward Delay value of the bridge (default=15 seconds).

  The TCA flag is set by the upstream bridge to tell the downstream bridges to stop sending TCN BPDUs. The TC flag is set in configuration BPDU by the Root Bridge to shorten the bridge table age-out period from default 300 seconds to

  Forward Delay seconds.

• Question 939:

  Refer to the exhibit.

  

  Which two statements about the EEM applet configuration are true? (Choose two.)

  A. The EEM applet runs before the CLI command is executed.
  B. The EEM applet runs after the CLI command is executed.
  C. The EEM applet requires a case-insensitive response.
  D. The running configuration is displayed only if the letter Y is entered at the CLI.
  A. The EEM applet runs before the CLI command is executed.
  D. The running configuration is displayed only if the letter Y is entered at the CLI.

  ---

  sync

  Indicates whether the policy should be executed synchronously before the CLI command executes. If the yes keyword is specified, the policy will run synchronously with the CLI command. If the no keyword is specified, the policy will run

  asynchronously with the CLI command.

  nocase

  (Optional) Specifies case insensitive comparison.

  Here we see that the sync knob was enabled so A is correct. However, C is not correct as the nocase argument was not used, so the applet is configured to display the config only if a capital Y is issued.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/eem/command/eem-cr- book/eem-cr-a2.html

• Question 940:

  DRAG DROP

  Drag each IPv6 extension header on the left to its corresponding description on the right.

  Select and Place: