Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 311:

  Refer to the exhibit.

  

  Why is the host unable to obtain an IP address?

  A. IP source guard is configured on the switch port.
  B. The DHCP server pool addresses are configured incorrectly.
  C. DHCP requests are being blocked.
  D. DHCP option 150 is disabled.
  A. IP source guard is configured on the switch port.

• Question 312:

  On a network using RIPng, the prefix field of a routing table entry has a value of

  0:0:0:0:0:0:0:0.

  What does this value signify?

  A. The next hop address is unknown.
  B. The next hop address is a site-local address.
  C. The neighboring router has IPv6 ND disabled.
  D. The next hop address must be the originator of the route advertisement.
  E. The associated route follows a default route out of the network.
  E. The associated route follows a default route out of the network.

• Question 313:

  Refer to the exhibit.

  

  Which statement describes the effect on the network if FastEthernet0/1 goes down temporarily?

  A. FastEthernet0/2 forwards traffic only until FastEthernet0/1 comes back up.
  B. FastEthernet0/2 stops forwarding traffic until FastEthernet0/1 comes back up.
  C. FastEthernet0/2 forwards traffic indefinitely.
  D. FastEthernet0/1 goes into standby.
  C. FastEthernet0/2 forwards traffic indefinitely.

  ---

  Use the switchport backup interface interface configuration command on a Layer 2 interface to configure Flex Links, a pair of interfaces that provide backup to each other. Use the no form of this command to remove the Flex Links

  configuration. With Flex Links configured, one link acts as the primary interface and forwards traffic, while the other interface is in standby mode, ready to begin forwarding traffic if the primary link shuts down. The interface being configured is

  referred to as the active link; the specified interface is identified as the backup link. The feature provides an alternative to the Spanning Tree Protocol (STP), allowing users to turn off STP and still retain basic link redundancy.

  Reference:

  http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12- 2_53_se/command/reference/2960ComRef/cli3.html#wp3269214

• Question 314:

  Refer to the exhibit.

  

  Which two statements about this egress queue are true? (Choose two.)

  A. The queue 3 buffer is allocated 20 percent, its drop threshold is 100 percent, and it is guaranteed 400 percent of memory.
  B. The queue 1 buffer is allocated 30 percent, its drop threshold is 25 percent, and it is guaranteed 100 percent of memory.
  C. The queue 1 buffer is allocated 30 percent, its drop threshold is 100 percent, and it is guaranteed 150 percent of memory.
  D. The queue 2 buffer is allocated 30 percent, its drop threshold is 200 percent, and it can use at maximum 400 percent of memory.
  E. The queue 3 buffer is allocated 30 percent, its drop threshold is 100 percent, and it can use at maximum 400 percent of memory.
  B. The queue 1 buffer is allocated 30 percent, its drop threshold is 25 percent, and it is guaranteed 100 percent of memory.
  D. The queue 2 buffer is allocated 30 percent, its drop threshold is 200 percent, and it can use at maximum 400 percent of memory.

• Question 315:

  Refer to the exhibit.

  

  AS #1 and AS #2 have multiple EBGP connections with each other. AS #1 wants all return traffic that is destined to the prefix 10.10.10.1/32 to enter through the router R1 from AS #2. In order to achieve this routing policy, the AS 1 advertises a lower MED from R1, compared to a higher MED from R3, to their respective BGP neighbor for the prefix 10.10.10.0/24. Will this measure guarantee that the routing policy is always in effect?

  A. Yes, because MED plays a deterministic role in return traffic engineering in BGP.
  B. Yes, because a lower MED forces BGP best-path route selection in AS #2 to choose R1 as the best path for 10.10.10.0/24.
  C. Yes, because a lower MED in AS #2 is the highest BGP attribute in BGP best-path route selection.
  D. No, AS #2 can choose to alter the weight attribute in R2 for BGP neighbor R1, and this weight value is cascaded across AS #2 for BGP best-path route selection.
  E. No, AS #2 can choose to alter the local preference attribute to overwrite the best-path route selection over the lower MED advertisement from AS #1. This local preference attribute is cascaded across AS #2 for the BGP best-path route selection.
  E. No, AS #2 can choose to alter the local preference attribute to overwrite the best-path route selection over the lower MED advertisement from AS #1. This local preference attribute is cascaded across AS #2 for the BGP best-path route selection.

  ---

  MED and AS path prepending can both be used to influence the way incoming traffic from other Autonomous Systems get sent to the local AS, but they provide no guarantee as the other AS ultimately has the final word in how they send traffic. Since local preference is preferred over MED in the BGP decision process, the other AS can configure local preference to override the MED settings you have configured.

• Question 316:

  Refer to the exhibit.

  

  Which OSPFv3 routes will be visible in the routing table of R2?

  A. 2001:12::1/128
  B. 2001:12::1/128, 2001:112::1/128
  C. 2001:12::2/128
  D. No OSPFv3 routes will be visible.
  D. No OSPFv3 routes will be visible.

  ---

  The command "ipv6 unicast-routing" needs to be configured on both routers before any IPv6 routes will be seen.

• Question 317:

  Which two statements about GLBP are true? (Choose two.)

  A. Packets are forwarded by multiple routers that share one virtual IP address.
  B. The active router forwards packets received on one virtual IP and MAC address.
  C. The standby router forwards packets when the active router fails.
  D. Hosts on the network are configured with multiple gateways for load balancing.
  E. Routers in a GLBP group can share multiple virtual MAC addresses.
  A. Packets are forwarded by multiple routers that share one virtual IP address.
  E. Routers in a GLBP group can share multiple virtual MAC addresses.

• Question 318:

  UESTION NO: 71

  Refer to the exhibit.

  

  If the route to 10.1.1.1 is removed from the R2 routing table, which server becomes the master NTP server?

  A. R2
  B. the NTP server at 10.3.3.3
  C. the NTP server at 10.4.4.4
  D. the NTP server with the lowest stratum number
  D. the NTP server with the lowest stratum number

  ---

  NTP uses a concept called "stratum" that defines how many NTP hops away a device is from an authoritative time source. For example, a device with stratum 1 is a very accurate device and might have an atomic clock attached to it. Another NTP server that is using this stratum 1 server to sync its own time would be a stratum 2 device because it's one NTP hop further away from the source. When you configure multiple NTP servers, the client will prefer the NTP server with the lowest stratum value.

  Reference: https://networklessons.com/network-services/cisco-network-time-protocol-ntp/

• Question 319:

  Which IPv6 tunneling mechanism requires a service provider to use one of its own native IPv6 blocks to guarantee that its IPv6 hosts will be reachable?

  A. 6rd tunneling
  B. automatic 6to4 tunneling
  C. NAT-PT tunneling
  D. ISATAP tunneling
  E. manual ipv6ip tunneling
  F. automatic 4to6 tunneling
  A. 6rd tunneling

• Question 320:

  Which two statements about SNMP are true? (Choose two.)

  A. SNMPv3 provides privacy and access control.
  B. All SNMP versions use get, getNext, and getBulk operations.
  C. SNMPv3 uses encrypted community strings.
  D. SNMPv1 and SNMPv2c use plaintext community strings.
  E. All SNMP versions support bulk retrieval and detailed error messages.
  A. SNMPv3 provides privacy and access control.
  B. All SNMP versions use get, getNext, and getBulk operations.