Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 271:

  Refer to the exhibit.

  

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

  A. It is set to run for five minutes.
  B. It continues to capture data after the buffer is full.
  C. It is set to run for a period of 00:03:26.
  D. It captures data only until the buffer is full.
  E. It is set to use the default buffer type.
  A. It is set to run for five minutes.
  B. It continues to capture data after the buffer is full.

• Question 272:

  Which QoS mechanism is used to implement CoPP?

  A. RSVP
  B. rate limiting
  C. FIFO
  D. MQC
  D. MQC

• Question 273:

  Which two statements about the C-bit and PW type are true? (Choose two.)

  A. The C-bit is 1 byte and the PW type is 15 bytes.
  B. The PW type indicates the type of pseudowire.
  C. The C-bit is 3 bits and the PW type is 10 bits.
  D. The C-bit set to 1 indicates a control word is present.
  E. The PW type indicates the encryption type.
  B. The PW type indicates the type of pseudowire.
  D. The C-bit set to 1 indicates a control word is present.

  ---

  The control word carries generic and Layer 2 payload-specific information. If the C-bit is set to 1, the advertising PE expects the control word to be present in every pseudowire packet on the pseudowire that is being signaled. If the C-bit is set

  to 0, no control word is expected to be present.

  Pseudowire Type--PW Type is a 15-bit field that represents the type of pseudowire.

  Reference: http://www.ciscopress.com/articles/article.asp?p=386788andseqNum=2

• Question 274:

  Which three modes are valid for forming an EtherChannel between the ports of two switches? (Choose three.)

  A. Active/active
  B. Active/passive
  C. Passive/passive
  D. Auto/auto
  E. Auto/desirable
  F. Desirable/on
  A. Active/active
  B. Active/passive
  E. Auto/desirable

  ---

  To configure an EtherChannel using LACP negotiation, each side must be set to either active or passive; only interfaces configured in active mode will attempt to negotiate an EtherChannel. Passive interfaces merely respond to LACP requests. PAgP behaves the same, but its two modes are refered to as desirable and auto.

  

  Reference: http://packetlife.net/blog/2010/jan/18/etherchannel-considerations/

• Question 275:

  Which three statements are true about the spanning-tree loop guard feature? (Choose three.)

  A. Loop guard affects UplinkFast operation.
  B. Loop guard can be enabled on PortFast ports.
  C. Loop guard operation is not affected by the spanning-tree timers.
  D. Loop guard must be enabled on point-to-point link only. Loop guard cannot be enabled on a switch that also has root guard enabled.
  E. Loop guard can detect a unidirectional link.
  C. Loop guard operation is not affected by the spanning-tree timers.
  D. Loop guard must be enabled on point-to-point link only. Loop guard cannot be enabled on a switch that also has root guard enabled.
  E. Loop guard can detect a unidirectional link.

• Question 276:

  Which two actions can you take to recover an interface in a errdisable state? (Choose two.)

  A. Enable UDLD on the switch.
  B. Enable errdisable recovery on the switch.
  C. Execute the shutdown command on the interface, followed by the no shutdown command.
  D. Remove the related commands from the configuration and reenter them.
  E. Enable loop guard on the switch.
  B. Enable errdisable recovery on the switch.
  C. Execute the shutdown command on the interface, followed by the no shutdown command.

• Question 277:

  Which two statements are true about control plane policing? (Choose two.)

  A. Control plane policing will affect only traffic that is destined to the route processor.
  B. Access lists that are used in policies for control plane policing must not use the log keyword.
  C. Access lists that use the deny rule in control plane policing do not progress to the next class.
  D. The log keyword can be used but the log-input keyword must not be used in policing.
  A. Control plane policing will affect only traffic that is destined to the route processor.
  B. Access lists that are used in policies for control plane policing must not use the log keyword.

• Question 278:

  Which statement about WAN Ethernet Services is true?

  A. Rate-limiting can be configured per EVC.
  B. Point-to-point processing and encapsulation are performed on the customer network.
  C. Ethernet multipoint services function as a multipoint-to-multipoint VLAN-based connection.
  D. UNIs can perform service multiplexing and all-in-one bundling.
  A. Rate-limiting can be configured per EVC.

  ---

  The MEF has defined a set of bandwidth profiles that can be applied at the UNI or to an EVC. A bandwidth profile is a limit on the rate at which Ethernet frames can traverse the UNI or the EVC. Reference: http://www.ciscopress.com/articles/article.asp?p=101367andseqNum=2

• Question 279:

  Refer to the exhibit.

  

  Which two statements are true regarding prefix 10.1.0.0/24? (Choose two.)

  A. The prefix is in policy, and Cisco PfR rerouted the traffic via 10.4.5.3 Et0/1 because of an OOP event.
  B. Cisco PfR is monitoring the prefix via passive NetFlow mode only.
  C. Cisco PfR is monitoring the prefix via active, fast, or active throughput IP SLA probe mode only.
  D. The prefix is in policy, and Cisco PfR did not reroute the traffic via 10.4.5.3 Et0/1 because the traffic was previously in policy.
  E. Cisco PfR is monitoring the prefix via mode monitor, which provides both NetFlow and IP SLA measurements.
  D. The prefix is in policy, and Cisco PfR did not reroute the traffic via 10.4.5.3 Et0/1 because the traffic was previously in policy.
  E. Cisco PfR is monitoring the prefix via mode monitor, which provides both NetFlow and IP SLA measurements.

  ---

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/pfr/command/pfr-cr-book/pfr- s1.html#wp2707728086

• Question 280:

  Which statement about the RPF interface in a BIDIR-PIM network is true?

  A. In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the PIM rendezvous point.
  B. In a BIDIR-PIM network, the RPF interface can be the interface that is used to reach the PIM rendezvous point or the interface that is used to reach the source.
  C. In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the source.
  D. There is no RPF interface concept in BIDIR-PIM networks.
  A. In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the PIM rendezvous point.

  ---

  RPF stands for "Reverse Path Forwarding". The RPF Interface of a router with respect to an address is the interface that the MRIB indicates should be used to reach that address. In the case of a BIDIR-PIM multicast group, the RPF interface is determined by looking up the Rendezvous Point Address in the MRIB. The RPF information determines the interface of the router that would be used to send packets towards the Rendezvous Point Link for the group.

  Reference: https://tools.ietf.org/html/rfc5015