Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 731:

  Refer to the exhibit.

  

  A TCP application in class APP1 is guaranteed bandwidth as shown in the exhibit. A UDP- based application is introduced that is also running the DSCP AF31 markings.

  Which option describes what happens when link congestion occurs and both applications need more bandwidth as guaranteed by the bandwidth statement?

  A. UDP dominance occurs, which causes the TCP-based application in class APP1 to underperform.
  B. Both applications receive a bandwidth of 2 Mb/s and are best effort within the class APP1.
  C. There is no impact when the UDP-based application is introduced.
  D. Both applications receive a bandwidth of 2 Kb/s and are best effort within the class APP1.
  A. UDP dominance occurs, which causes the TCP-based application in class APP1 to underperform.

• Question 732:

  Which value does EIGRP use to determine the metric for a summary address?

  A. The average of the component metrics
  B. A default fixed value
  C. The lowest metric among the component routes
  D. The highest metric among the component routes
  C. The lowest metric among the component routes

• Question 733:

  Refer to the exhibit.

  

  What is the meaning of the asterisk (*) in the output?

  A. PIM neighbor 10.1.5.6 is the RPF neighbor for the group 232.1.1.1 for the shared tree.
  B. PIM neighbor 10.1.5.6 is the one that is seen as the RPF neighbor when performing the command show ip rpf 10.1.4.7.
  C. PIM neighbor 10.1.5.6 is the winner of an assert mechanism.
  D. The RPF neighbor 10.1.5.6 is invalid.
  C. PIM neighbor 10.1.5.6 is the winner of an assert mechanism.

  ---

  show ip mroute Field Descriptions Field Description

  RPF neighbor or RPF nbr IP address of the upstream router to the source. Tunneling indicates that this router is sending data to the RP encapsulated in register packets. The hexadecimal number in parentheses indicates to which RP it is registering. Each bit indicates a different RP if multiple RPs per group are used. If an asterisk (*) appears after the IP address in this field, the RPF neighbor has been learned through an assert.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/ipmulti/command/reference/fiprmc_r/1rfmult 3.html

• Question 734:

  Refer to the exhibit.

  

  Which command can you enter to resolve this error message on a peer router?

  A. username password
  B. ppp chap
  C. aaa authorization exec if-authenticated
  D. aaa authorization network if-authenticated
  A. username password

• Question 735:

  Refer to the exhibit.

  

  The interface FastEthernet0/1 of both routers R4 and R5 is connected to the same Ethernet segment with a multicast receiver. Which two statements are true? (Choose two)

  A. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R4.
  B. Both routers R4 and R5 will send PIM join messages to the RP.
  C. Only router R5 will send a multicast join message to the RP.
  D. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R5.
  C. Only router R5 will send a multicast join message to the RP.
  D. Multicast traffic that is destined to a receiver with IP address 192.168.2.6 will flow through router R5.

  ---

  Even though R4 is the active HSRP router, traffic will flow through R5 and only R5 will send the join messages. The Multicast DR is elected by the higher IP address or priority. R5 has 192.168.2.2 and R4 has 192.168.2.1. R5 is the DR which sends all packets to the RP.

• Question 736:

  Consider a network that mixes link bandwidths from 128 kb/s to 40 Gb/s. Which value should be set for the OSPF reference bandwidth?

  A. Set a value of 128.
  B. Set a value of 40000.
  C. Set a manual OSPF cost on each interface.
  D. Use the default value.
  E. Set a value of 40000000.
  F. Set a value of 65535.
  C. Set a manual OSPF cost on each interface.

  ---

  Unlike the metric in RIP which is determined by hop count and EIGRP's crazy mathematical formulated metric, OSPF is a little more simple. The default formula to calculate the cost for the OSPF metric is (10^8/BW). By default the metrics reference cost is 100Mbps, so any link that is 100Mbps will have a metric of 1. a T1 interface will have a metric of 64 so in this case if a router is trying to get to a FastEthernet network on a router that is through a T1 the metric would be 65 (64 +1). You do however have the ability to statically specify a metric on a per interface basis by using the ip ospf cost # where the cost is an integer between 1-65535. So the big question is why would you want to statically configure a metric? The biggest advantage of statically configuring an OSPF metric on an interface is to manipulate which route will be chosen dynamically via OSPF. In a nut shell it's like statically configuring a dynamic protocol to use a specific route. It should also be used when the interface bandwidths vary greatly (some very low bandwidth interfaces and some very high speed interfaces on the same router).

• Question 737:

  Refer to the exhibit.

  

  Which type of BGP peer is 192.168.1.1?

  A. route reflector client
  B. iBGP
  C. confederation
  D. VPNv4
  C. confederation

• Question 738:

  Which statement describes the native VLAN concept in an ISL trunk?

  A. It is the VLAN ID that is assigned to untagged packets.
  B. It is the VLAN with highest priority.
  C. It is the default VLAN for a trunk.
  D. There is no native VLAN concept in an ISL trunk.
  D. There is no native VLAN concept in an ISL trunk.

  ---

  ISL has no native VLAN concept because it places the entire Ethernet frame in the payload of an ISL frame. Native VLANs is an 802.1Q specific concept

• Question 739:

  Refer to the exhibit.

  

  What does "(received-only)" mean?

  A. The prefix 10.1.1.1 can not be advertised to any eBGP neighbor.
  B. The prefix 10.1.1.1 can not be advertised to any iBGP neighbor.
  C. BGP soft reconfiguration outbound is applied.
  D. BGP soft reconfiguration inbound is applied.
  D. BGP soft reconfiguration inbound is applied.

  ---

  When you configure bgp soft-configuration-inbound, all the updates received from the neighbor will be stored unmodified, regardless of the inbound policy, and these routes appear as "(received-only)."

• Question 740:

  Which three statements are true for a network with 10 switches and 126 segments? (Choose three.)

  A. It has 10 designated ports.
  B. It has 63 designated ports.
  C. It has 10 root ports.
  D. It has 9 root ports.
  E. It has 126 designated ports.
  F. It has only one root bridge.
  D. It has 9 root ports.
  E. It has 126 designated ports.
  F. It has only one root bridge.