Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 191:

  : 340

  Which command correctly configures standby tracking for group 1 using the default decrement priority value?

  A. standby 1 track 100
  B. standby 1 track 100 decrement 1
  C. standby 1 track 100 decrement 5 D. standby 1 track 100 decrement 20
  A. standby 1 track 100

• Question 192:

  DRAG DROP

  Drag and drop the Cisco IOX XE subpackage on the left to the function it performs on the right.

  Select and Place:

  

  

• Question 193:

  Which two options are actions that EEM can perform after detecting an event? (Choose two.)

  A. Place a port in err-disabled.
  B. Generate an SNMP trap.
  C. Reload the Cisco IOS Software.
  D. Send an SMS.
  B. Generate an SNMP trap.
  C. Reload the Cisco IOS Software.

  ---

  action snmp-trap

  To specify the action of generating a Simple Network Management Protocol (SNMP) trap when an Embedded Event Manager (EEM) applet is triggered, use the action snmp-trap command in applet configuration mode.

  ction reload

  To specify the action of reloading the Cisco IOS software when an Embedded Event Manager (EEM) applet is triggered, use the action reload command in applet configuration mode.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2s/feature/guide/fs_eem2.html

• Question 194:

  Which two statements about the OSPF two-way neighbor state are true? (Choose two.)

  A. Each neighbor receives its own router ID in a hello packet from the other neighbor.
  B. Each neighbor receives a hello message from the other neighbor.
  C. It is valid only on NBMA networks.
  D. It is valid only on point-to-point networks.
  E. Each neighbor receives an acknowledgement of its own hello packet from the other neighbor.
  F. Each neighbor receives the router ID of the other neighbor in a hello packet from the other neighbor.
  A. Each neighbor receives its own router ID in a hello packet from the other neighbor.
  E. Each neighbor receives an acknowledgement of its own hello packet from the other neighbor.

• Question 195:

  DRAG DROP

  Drag and drop the RIP configuration command on the left to the function it performs on the right.

  Select and Place:

  

  

• Question 196:

  Refer to the exhibit.

  

  Which two actions can you take to enable CE-1 at site A to access the Internet? (Choose two.)

  A. Create a default route for site A on PE-1 with the next hop set to the PE-2 interface to the Internet.
  B. Originate a default route in site B with the next hop set to the PE-2 Internet interface, and import the default route into site A.
  C. Create a default route on CE-1 with the next hop set to the PE-1 upstream interface.
  D. Originate a default route in site A with the next hop set to the PE-2 interface to CE-1.
  E. Create a static default route on CE-1 with the next hop set to the PE-2 interface to the Internet.
  A. Create a default route for site A on PE-1 with the next hop set to the PE-2 interface to the Internet.
  B. Originate a default route in site B with the next hop set to the PE-2 Internet interface, and import the default route into site A.

• Question 197:

  Which two statements about the ipv6 ospf authentication command are true? (Choose two.)

  A. The command is required if you implement the IPsec AH header.
  B. The command configures an SPI.
  C. The command is required if you implement the IPsec TLV.
  D. The command can be used in conjunction with the SPI authentication algorithm.
  E. The command must be configured under the OSPFv3 process.
  A. The command is required if you implement the IPsec AH header.
  B. The command configures an SPI.

  ---

  OSPFv3 requires the use of IPsec to enable authentication. Crypto images are required to use authentication, because only crypto images include the IPsec API needed for use with OSPFv3.

  In OSPFv3, authentication fields have been removed from OSPFv3 packet headers. When OSPFv3 runs on IPv6, OSPFv3 requires the IPv6 authentication header (AH) or IPv6 ESP header to ensure integrity, authentication, and

  confidentiality of routing exchanges. IPv6 AH and ESP extension headers can be used to provide authentication and confidentiality to OSPFv3.

  To use the IPsec AH, you must enable the ipv6 ospf authentication command. To use the IPsec ESP header, you must enable the ipv6 ospf encryption command. The ESP header may be applied alone or in combination with the AH, and

  when ESP is used, both encryption and authentication are provided. Security services can be provided between a pair of communicating hosts, between a pair of communicating security gateways, or between a security gateway and a host.

  To configure IPsec, you configure a security policy, which is a combination of the security policy index (SPI) and the key (the key is used to create and validate the hash value). IPsec for OSPFv3 can be configured on an interface or on an

  OSPFv3 area. For higher security, you should configure a different policy on each interface configured with IPsec. If you configure IPsec for an OSPFv3 area, the policy is applied to all of the interfaces in that area, except for the interfaces

  that have IPsec configured directly. Once IPsec is configured for OSPFv3, IPsec is invisible to you.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15- sy/iro-15-sy-book/ip6-route-ospfv3-auth-ipsec.html

• Question 198:

  Which statement about NAT64 is true?

  A. It uses one-to-one mapping between IPv6 addresses and IPv4 addresses.
  B. It requires static address mapping between IPv6 addresses and IPv4 addresses.
  C. It can be used to translate an IPv6 network to another IPv6 network.
  D. It can be configured for stateless and stateful translation.
  D. It can be configured for stateless and stateful translation.

• Question 199:

  Refer to the exhibit. The Main1 and Branch1 switches are connected directly over an MPLS pseudowire, and both run UDLD. After router B1 reloads because of a power failure, the pseudowire is restored. However, the Branch1 switch is unable to reach the Main1 switch.

  

  Which two actions can you take to restore connectivity and prevent the problem from recurring? (Choose two.)

  A. Configure a backup pseudowire between the Main1 and Branch1 switches.
  B. Enable UDLD recovery on both the Main1 and Branch1 switches.
  C. Configure a backup GRE tunnel between the Main1 and Branch1 switches.
  D. Enable errdisable recovery on both the Main1 and Branch1 switches.
  E. Issue the shutdown and no shutdown commands on both the Branch1 switch's uplink to the B1 router and the Main1 switch's uplink to the M1 router.
  F. Issue the shutdown and no shutdown commands on the Branch1 switch uplink to the B1 router only.
  D. Enable errdisable recovery on both the Main1 and Branch1 switches.
  F. Issue the shutdown and no shutdown commands on the Branch1 switch uplink to the B1 router only.

• Question 200:

  Which statement about the feasibility condition in EIGRP is true?

  A. The prefix is reachable via an EIGRP peer that is in the routing domain of the router.
  B. The EIGRP peer that advertises the prefix to the router has multiple paths to the destination.
  C. The EIGRP peer that advertises the prefix to the router is closer to the destination than the router.
  D. The EIGRP peer that advertises the prefix cannot be used as a next hop to reach the destination.
  C. The EIGRP peer that advertises the prefix to the router is closer to the destination than the router.

  ---

  The advertised metric from an EIGRP neighbor (peer) to the local router is called Advertised Distance (or reported distance) while the metric from the local router to that network is called Feasible Distance. For example, R1 advertises network 10.10.10.0/24 with a metric of 20 to R2. For R2, this is the advertised distance. R2 calculates the feasible distance by adding the metric from the advertised router (R1) to itself. So in this case the feasible distance to network 10.10.10.0/24 is 20 + 50 = 70.

  

  Before a router can be considered a feasible successor, it must pass the feasibility condition rule. In short, the feasibility condition says that if we learn about a prefix from a neighbor, the advertised distance from that neighbor to the destination must be lower than our feasible distance to that same destination. Therefore we see the Advertised Distance always smaller than the Feasible Distance to satisfy the feasibility condition.