Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 151:

  Refer to the exhibit.

  

  ASN 64523 has a multihomed BGP setup to ISP A and ISP B. Which BGP attribute can you set to allow traffic that originates in ASN 64523 to exit the ASN through ISP B?

  A. origin
  B. next-hop
  C. weight
  D. multi-exit discriminator
  D. multi-exit discriminator

  ---

  MED is an optional nontransitive attribute. MED is a hint to external neighbors about the preferred path into an autonomous system (AS) that has multiple entry points. The MED is also known as the external metric of a route. A lower MED

  value is preferred over a higher value.

  Example at reference link below:

  Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol- bgp/13759-37.html

• Question 152:

  How does MSTP provide backward compatibility with RSTP?

  A. It uses the hop count variable as a TTL counter.
  B. It transmits all spanning-tree information in one BPDU.
  C. It supports up to 128 MSTI messages.
  D. It encodes the MSTP-specific region information before the legacy RSTP BPDU.
  D. It encodes the MSTP-specific region information before the legacy RSTP BPDU.

• Question 153:

  Which two statements about 6VPE are true? (Choose two.)

  A. It allows a service provider to use an existing MPLS network to provide VPN services to IPv6 customers.
  B. It uses MP-BGP as the carrier protocol to transport IPv6 connectivity.
  C. It provides IPv6 connectivity to MPLS-VPN customers when IPv6 overlay tunneling is also configured.
  D. It allows a service provider to use an existing MPLS network to provide global addressing to their IPv6 customers.
  E. It requires the configuration of a GRE tunnel tagged with a VLAN ID.
  F. It allows a service provider to use an existing L2TPv3 network to provide VPN services to IPv6 customers.
  A. It allows a service provider to use an existing MPLS network to provide VPN services to IPv6 customers.
  B. It uses MP-BGP as the carrier protocol to transport IPv6 connectivity.

  ---

  The IPv6 MPLS VPN service model is similar to that of IPv4 MPLS VPNs. Service providers who have already deployed MPLS IPv4 VPN services over an IPv4 backbone can deploy IPv6 MPLS VPN services over the same IPv4 backbone by upgrading the PE router IOS version and dual-stack configuration, without any change on the core routers. IPv4 services can be provided in parallel with IPv6 services. IPv6 VPN service is exactly the same as MPLS VPN for IPv4. 6VPE offers the same architectural features as MPLS VPN for IPv4. It offers IPv6 VPN and uses the same components, such as:

  ? ? Route distinguishers ? VPN Routing and Forwarding (VRF) instances

  ?

  Site of Origin (SOO) ? Extended community

  ? MP-BGP Reference: http://www.cisco.com/c/en/us/td/docs/net_mgmt/ip_solution_center/5

• Question 154:

  Which feature can be used to block traffic from one host to another within one VLAN on a Layer 2 switch?

  A. port security
  B. dot1x
  C. access list
  D. protected ports
  D. protected ports

• Question 155:

  Which two metrics are measured with active probes when PfR voice traffic optimization is in use? (Choose two.)

  A. MOS
  B. cost
  C. jitter
  D. bandwidth
  A. MOS
  C. jitter

• Question 156:

  Which command sets the maximum segment size for a TCP packet initiated from a router?

  A. ip mtu
  B. ip tcp adjust-mss
  C. ip tcp mss
  D. ip tcp window-size
  C. ip tcp mss

• Question 157:

  Which two attributes were introduced with the Cisco IOS BGP 4-byte ASN feature? (Choose two.)

  A. AS4_AGGREGATOR
  B. AS4_PATH
  C. AS4_PLAIN
  D. AS4_DOT
  E. AS4_TRANS
  A. AS4_AGGREGATOR
  B. AS4_PATH

• Question 158:

  Refer to the exhibit.

  

  Why is the router not accessible via Telnet on the GigabitEthernet0 management interface?

  A. The wrong port is being used in the telnet-acl access list.
  B. The subnet mask is incorrect in the telnet-acl access list.
  C. The log keyword needs to be removed from the telnet-acl access list.
  D. The access class needs to have the vrf-also keyword added.
  D. The access class needs to have the vrf-also keyword added.

  ---

  The correct command should be "access-class telnet-acl in vrf-also". If you do not specify the vrf-also keyword, incoming Telnet connections from interfaces that are part of a VRF are rejected.

• Question 159:

  Refer to the exhibit.

  

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

  A. It allows 172.16.0.0/16 to be distributed into EIGRP.
  B. It allows a default route to be distributed into EIGRP.
  C. It allows 172.16.0.0/16 and larger subnets to be distributed into EIGRP.
  D. It prevents 172.16.0.0/16 from being distributed into EIGRP.
  E. It prevents a default route from being distributed into EIGRP.
  F. It creates summary routes and injects them into EIGRP.
  A. It allows 172.16.0.0/16 to be distributed into EIGRP.
  B. It allows a default route to be distributed into EIGRP.

  ---

  In this example, the prefix list is configured to only allow the two specific routes of 172.16.0.0/16 and the default route. Any other routes will be filtered.

• Question 160:

  Refer to the exhibit.

  

  Which three statements about this configuration are true? (Choose three.)

  A. The default route appears in the global routing table.
  B. The static route appears in the VRF red routing table.
  C. The subnet 192.168.1.0 is unique to the VRF red routing table.
  D. The static route is added to the global routing table and leaked from the VRF red.
  E. The subnet 192.168.1.0 is unique to the global routing table.
  F. 192.168.1.1 is reachable using any of the addresses on the router where the static route is configured.
  A. The default route appears in the global routing table.
  B. The static route appears in the VRF red routing table.
  E. The subnet 192.168.1.0 is unique to the global routing table.

  ---

  This is an example of the route leaking feature. Here, this static route is created for the red VRF so it will be installed into the red VRF routing table, but the use of the global keyword will cause this default route to appear in the global routing table.