Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 841:

  Refer to the exhibit.

  

  If a console port is configured as shown, which response is displayed when you connect to the console port?

  A. a blinking cursor
  B. the message "Authorized users only"
  C. the username prompt
  D. three username name prompts followed by a timeout message
  E. the message "Connection refused"
  A. a blinking cursor

• Question 842:

  Refer to the Exhibit.

  

  With BGP always-compare enabled, which BGP entry is installed in the RIB?

  A. Entry 3 because it has the lowest MED.
  B. Entry 1 because it has the best MED of the external routes.
  C. Entry 1 because it was installed first (oldest_ in the BGP table.
  D. Entry 2 because it has the lowest router ID.
  A. Entry 3 because it has the lowest MED.

• Question 843:

  Which option is the default point of insertion for the BGP cost community?

  A. before best path calculation
  B. after best path calculation
  C. after the IGP metric comparison
  D. after the router ID comparison
  C. after the IGP metric comparison

• Question 844:

  Refer to the exhibit.

  

  What happens to a TCP packet that is received on interface GigabitEthernet 0/0/0.100, which has DF bit set to 1, and packet has a valid destination?

  A. The packet is not matched by route-map foo and the DF bit is left as it was
  B. The packet is matched by route-map foo and the DF bit is left as it was
  C. The packet is matched by route-map foo and the DF bit is set to 0
  D. The packet is not matched by route-map foo and the DF bit is set to 0 '
  A. The packet is not matched by route-map foo and the DF bit is left as it was

• Question 845:

  DRAG DROP

  Drag and drop the IPv6 multicast feature on the left to its corresponding function on the right.

  Select and Place:

  

  

• Question 846:

  Which two statements about IS-IS are true? (Choose two.)

  A. The default hello interval is 10 seconds and the default hold timer is 30 seconds.
  B. The hello interval can be changed on a per-interface basis with the command isis hello- multiplier.
  C. Both routers need to have the same hello intervals and hold timers in order to form IS-IS neighbors.
  D. Both IS-IS routers need to have the same capabilities in the hello packet in order to form neighbors.
  A. The default hello interval is 10 seconds and the default hold timer is 30 seconds.
  B. The hello interval can be changed on a per-interface basis with the command isis hello- multiplier.

  ---

  isis hello-interval To specify the length of time between hello packets that the Cisco IOS software sends, use the isis hello-interval command in interface configuration mode. By default, a value three times the hello interval seconds is advertised as the hold time in the hello packets sent. (Change the multiplier of 3 by specifying the isis hello-multiplier command.) With smaller hello intervals, topological changes are detected faster, but there is more routing traffic. The default is 10 seconds.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/iproute/command/reference/fiprrp_r/1rfisis.ht ml

• Question 847:

  Which two statements about UDP and latency are true? (Choose two.)

  A. UDP is connection oriented, so the size of a UDP stream is independent of latency.
  B. UDP is connection oriented, so latency can increase the size of a UDP stream.
  C. UDP is connectionless, so latency can increase the size of a UDP stream.
  D. If latency decreases, throughput also decreases.
  E. If latency increases, throughput also increases.
  F. Latency can cause jitter on UDP connections.
  C. UDP is connectionless, so latency can increase the size of a UDP stream.
  F. Latency can cause jitter on UDP connections.

• Question 848:

  How does having an EIGRP feasible successor speed up convergence?

  A. EIGRP sends queries only if there is a feasible successor, which decreases the number of routers that are involved in convergence.
  B. EIGRP sends queries only if there is not a feasible successor, which causes less control traffic to compete with data.
  C. EIGRP immediately installs the loop-free alternative path in the RIB.
  D. EIGRP preinstalls the feasible successor in the RIB in all cases, which causes traffic to switch more quickly.
  C. EIGRP immediately installs the loop-free alternative path in the RIB.

  ---

  Feasible Successor

  A next-hop router that serves as backup to the current successor. The condition is that the said router's AD (or RD) is less than the FD of the current successor route.

  Once the feasible successor is selected, they are placed in the topology table. If a change in topology occurs which requires a new route, DUAL looks for the feasible successor and uses it as new route immediately, resulting in fast

  convergence.

  Reference: http://routemyworld.com/2008/07/page/2/

• Question 849:

  Which three options are three of the default EIGRP administrative distances? (Choose three.)

  A. Internal, 90
  B. External, 170
  C. Summary, 5
  D. Outside Local, 100
  E. Inside Local, 180
  F. Inside Global, 1
  A. Internal, 90
  B. External, 170
  C. Summary, 5

  ---

  The following table lists the default administrative distances for various routing protocols used on Cisco routers.

  Routing Protocol Administrative distance Directly connected interface Static route out an interface Static route to next-hop address DMNR - Dynamic Mobile Network Routing EIGRP summary route External BGP Internal EIGRP IGRP OSPF IS-IS Routing Information Protocol (RIP) Exterior Gateway Protocol (EGP) On Demand Routing (ODR) External EIGRP Internal BGP Floating Static Route (ex. DHCP-learned) Unknown Reference: http://en.wikipedia.org/wiki/Administrative_distance

• Question 850:

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

  A. It must be configured on each router in a network.
  B. It supports ATM LAN emulation.
  C. The existing network is unaware that NetFlow is running.
  D. It uses SIP to establish sessions between neighbors.
  E. It provides resource utilization accounting.
  C. The existing network is unaware that NetFlow is running.
  E. It provides resource utilization accounting.

  ---

  NetFlow identifies packet flows for both ingress and egress IP packets. It does not involve any connection-setup protocol, either between routers or to any other networking device or end station. NetFlow does not require any change externally--either to the packets themselves or to any networking device. NetFlow is completely transparent to the existing network, including end stations and application software and network devices like LAN switches. Also, NetFlow capture and export are performed independently on each internetworking device; NetFlow need not be operational on each router in the network. NetFlow data provides fine- grained metering for highly flexible and detailed resource utilization accounting. For example, flow data includes details such as IP addresses, packet and byte counts, timestamps, type-of-service, and application ports. Service providers might utilize the information for billing based on time-of-day, bandwidth usage, application usage, or quality of service. Enterprise customers might utilize the information for departmental chargeback or cost allocation for resource utilization.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/netflow/configuration/12-4t/nf- 12-4t-book/ios-netflow-ov.html