Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 1:

  Refer to the exhibit.

  

  Which two conditions can cause this error message to be displayed on the console? (Choose two.)

  A. The EtherChannel is configured as desirable on both ends.
  B. The port-channel on the adjacent device is misconfigured.
  C. There is a speed and duplex mismatch on interface fa0/12.
  D. The EtherChannel is configured as auto on one of the interfaces.
  B. The port-channel on the adjacent device is misconfigured.
  C. There is a speed and duplex mismatch on interface fa0/12.

• Question 2:

  Refer to the exhibit.

  

  You discover that only 1.5 Mb/s of web traffic can pass during times of congestion on the given network. Which two options are possible reasons for this limitation? (Choose two.)

  A. The web traffic class has too little bandwidth reservation.
  B. Video traffic is using too much bandwidth.
  C. The service-policy is on the wrong interface.
  D. The service-policy is going in the wrong direction.
  E. The NAT policy is adding too much overhead.
  A. The web traffic class has too little bandwidth reservation.
  B. Video traffic is using too much bandwidth.

  ---

  In this example, the web traffic will fall into the default class, which is only 15 percent of the 10Mbps Internet connection (1.5Mbps). Meanwhile, video traffic is allowed 50% of the 10 Mbps.

• Question 3:

  Refer to the exhibit.

  

  Which statement is true?

  A. There is an MPLS network that is running 6PE, and the ingress PE router has no mpls ip propagate-ttl.
  B. There is an MPLS network that is running 6VPE, and the ingress PE router has no mpls ip propagate-ttl.
  C. There is an MPLS network that is running 6PE or 6VPE, and the ingress PE router has mpls ip propagate-ttl.
  D. There is an MPLS network that is running 6PE, and the ingress PE router has mpls ip propagate-ttl.
  E. There is an MPLS network that is running 6VPE, and the ingress PE router has mpls ip propagate-ttl.
  C. There is an MPLS network that is running 6PE or 6VPE, and the ingress PE router has mpls ip propagate-ttl.

  ---

  The second hop shows and IPV6 address over MPLS, so we know that there is an MPLS network running 6PE or 6VPE. And because the second and third hops show up in the traceroute. Then TTL is being propagated because if the "no ip propagate-ttl" command was used these devices would be hidden in the traceroute.

• Question 4:

  Refer to the exhibit.

  

  All switches are Cisco switches. Assume that Cisco Discovery Protocol is enabled only on switches A and C. Which information is returned when you issue the command show cdp neighbors on switch C?

  A. a limited amount of information about switch B
  B. no neighbor details will be returned
  C. neighbor details for switch B
  D. neighbor details for switch A
  E. neighbor details for switch C
  B. no neighbor details will be returned

  ---

  CDP is used to discover information on directly connected neighbors only, so in this case SwitchC would only be able to obtain CDP information from SwitchB. However, since SwitchB is not running CDP then no neighbor information will be seen on SwitchC. Same goes for Switch A also in this topology.

• Question 5:

  What is the maximum number of classes that MQC can support in a single policy map?

  A. 512
  B. 256
  C. 128
  D. 64
  B. 256

• Question 6:

  Which two statements about Inverse ARP are true? (Choose two.)

  A. It uses the same operation code as ARP.
  B. It uses the same packet format as ARP.
  C. It uses ARP stuffing.
  D. It supports static mapping.
  E. It translates Layer 2 addresses to Layer 3 addresses.
  F. It translates Layer 3 addresses to Layer 2 addresses.
  B. It uses the same packet format as ARP.
  E. It translates Layer 2 addresses to Layer 3 addresses.

  ---

  Inverse Address Resolution Protocol (Inverse ARP or InARP) is used to obtain Network Layer addresses (for example, IP addresses) of other nodes from Data Link Layer (Layer 2) addresses. It is primarily used in Frame Relay (DLCI) and ATM networks, in which Layer 2 addresses of virtual circuits are sometimes obtained from Layer 2 signaling, and the corresponding Layer 3 addresses must be available before those virtual circuits can be used. Since ARP translates Layer 3 addresses to Layer 2 addresses, InARP may be described as its inverse. In addition, InARP is implemented as a protocol extension to ARP: it uses the same packet format as ARP, but different operation codes.

  Reference: http://en.wikipedia.org/wiki/Address_Resolution_Protocol

• Question 7:

  Which two platforms provide hypervisor virtualization? (Choose two.)

  A. DevStack
  B. Docker
  C. KVM
  D. OpenStack
  E. Xen
  C. KVM
  E. Xen

• Question 8:

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

  A. It supports jumbo frames of up to 9202 bytes.
  B. It adds a 50-byte header to copied Layer 2 Ethernet frames.
  C. It supports packet fragmentation and reassembles the packets.
  D. It adds a 4-byte header to copied Layer 2 Ethernet frames.
  E. Source sessions on an individual switch can use different origin IP addresses.
  A. It supports jumbo frames of up to 9202 bytes.
  B. It adds a 50-byte header to copied Layer 2 Ethernet frames.

• Question 9:

  Which two DHCP messages are always sent as broadcast? (Choose two.)

  A. DHCPOFFER
  B. DHCPDECLINE
  C. DHCPRELEASE
  D. DHCPREQUEST
  E. DHCPDISCOVER
  D. DHCPREQUEST
  E. DHCPDISCOVER

  ---

  DHCP discovery

  The client broadcasts messages DHCPDISCOVER on the network subnet using the destination address 255.255.255.255 or the specific subnet broadcast address.

  DHCP request

  In response to the DHCP offer, the client replies with a DHCP request, broadcasts to the server, requesting the offered address. A client can receive DHCP offers from multiple servers, but it will accept only one DHCP offer.

  Reference: http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol

• Question 10:

  Refer to Exhibit.

  

  An IPv6 tunnel is configured between site A and site B. Which feature does the tunnel support?

  A. Single policy
  B. transport mode
  C. site-to-site tunnel mode.
  D. OSPFv2
  C. site-to-site tunnel mode.