Cisco 350-029 Online Practice Questions and Exam Preparation

Cisco 350-029 Online Questions & Answers

• Question 311:

  Which two features prevent routing loops between the OSPF sites of a customer when the sites are multihomed or a backdoor link is used between the sites? (Choose two.)

  A. sham link
  B. down bit
  C. virtual link
  D. Site of Origin
  E. domain tag
  B. down bit
  E. domain tag

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  If a route sent from a PE router to a CE router could then be received by another PE router from one of its own CE router, there are chances of routing loops. This situation is possible when a "backdoor link" connects two CE routers

  connected to two different PE routers. To prevent this, the PE sets the DN bit in any LSA that it sends to the CE router. If the PE router receives any LSA with DN bit set, it ignores the LSA.

  1) DN bit:

  When a PE router sends a Type-3 LSA to a CE router, the DN bit in LSA Options field must be set. Now if the CE router sends the Type-3 LSA to other PE router (s), the PE router will not redistribute it further.

  When a PE router needs to distribute a route to a CE router which comes from the outside of CE router's OSPF domain, the PE router presents itself as an ASBR and distributes the route in Type- 5 LSA. The DN bit must be set in the LSA.

  The Options field is present in all LSAs. The Options field is 1-byte long as follows- DN O DC EA N/P MC E MT

  2) Route Tags (Domain Tags):

  In some implementations (where DN bit is not set), Domain Tags (named by Cisco) are used to ensure Type-5 LSAs generated by a PE router will be ignored by other PE routers that may receive it. The value of Domain tag is configurable

  and arbitrary if not set. Hence must be distinct from other OSPF tags

• Question 312:

  Refer to the exhibit.

  

  Which Cisco IOS feature does this algorithm illustrate?

  A. OSPF exponential back-off
  B. IP event dampening
  C. partial SPF
  D. EIGRP DUAL
  E. the Cisco MPLS traffic engineering path recalculation
  B. IP event dampening

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  1.10. High Availability

  

• Question 313:

  What is the order of preference for these commands when all of them are applied to one neighbor in the BGP inbound filter direction?

  A. prefix-list/distribute-list, filter-list, route-map
  B. route-map, filter-list, prefix-list/distribute-list
  C. route-map, prefix-list/distribute-list, filter-list
  D. filter-list, prefix-list/distribute-list, route-map
  E. prefix-list/distribute-list, route-map, filter-list
  B. route-map, filter-list, prefix-list/distribute-list

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  Q. What is the order of preference of attributes when some or all are applied to one neighbor in BGP?

  A. The order of preference varies based on whether the attributes are applied for inbound updates or outbound updates. For inbound updates the order of preference is: route-map filter-list prefix-list, distribute-list For outbound updates the order of preference is: prefix-list, distribute-list filter-list route-map NotE. The attributes prefix-list and distribute-list are mutually exclusive, and only one command (neighbor prefix-list or neighbor distribute-list) can be applied to each inbound or outbound direction for a particular neighbor.

• Question 314:

  A network engineer wants to use Telnet to access a CE device in a VRF from a PE device that runs Cisco IOS Software. How can a CE device with IP address 1.1.1.2 be accessed by the PE device?

  A. telnet 1.1.1.2 /vrf vrf-name
  B. telnet 1.1.1.2 vrf vrf name
  C. telnet 1.1.1.2 vrf
  D. telnet vrf vrf name 1.1.1.2
  A. telnet 1.1.1.2 /vrf vrf-name

• Question 315:

  Drag and drop the appropriate AFI/SAFI description on the left to the corresponding identifier on the right.

  Select and Place:

  

  

• Question 316:

  Where is the MPLS label imposed?

  A. after the Layer 3 header and before the Layer 2 payload
  B. after the Layer 3 header and before the Layer 4 payload
  C. after the Layer 2 header and before the Layer 1 payload
  D. after the Layer 1 header and before the Layer 2 payload
  E. after the Layer 2 header and before the Layer 3 payload
  E. after the Layer 2 header and before the Layer 3 payload

• Question 317:

  Which of the following descriptions about IP spoofing is correct?

  A. IP destination address is forged
  B. IP source address is forged
  C. IP TCP destination port is forged
  D. None of above
  E. IP TCP source port is forged
  B. IP source address is forged

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  1.13. Security in core

• Question 318:

  A security risk has been discovered on the Service Provider MPLS core network during a network audit. Traceroute between the customer sites displays IP addresses of the Service Provider MPLS core. What should be done to hide the IP addresses of the Service Provider MPLS core from the customer traceroute utility?

  A. Configure an access list to block traceroute traffic.
  B. Apply the no mpls ip propagate-ttl forward command.
  C. Enable MPLS LDP session protection.
  D. Configure an LDP label allocation filter.
  E. Apply the no mpls ip propagate-ttl local command.
  B. Apply the no mpls ip propagate-ttl forward command.

• Question 319:

  In the case of Ethernet transport, which two types of attachment circuits does L2TPv3 support? (Choose two.)

  A. port tunneling on the Ethernet subinterface
  B. VLAN tunneling on the Ethernet trunk
  C. port tunneling on the Ethernet interface
  D. VLAN tunneling on the Ethernet VLAN subinterface
  E. port tunneling on the Ethernet trunk
  C. port tunneling on the Ethernet interface
  D. VLAN tunneling on the Ethernet VLAN subinterface

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  L2TPv3 can be configured on either a physical port or on a subinterface. The first is known as Port tunneling and the second as vlan tunneling.

• Question 320:

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

  A. An additional address family was added to MP-BGP to support 6VPE.
  B. 6VPE routes are installed in the global routing table.
  C. MP-BGP can be used to propagate routes between the PE and the CE.
  D. 6VPE is functionally equivalent to VPNv4.
  A. An additional address family was added to MP-BGP to support 6VPE.
  C. MP-BGP can be used to propagate routes between the PE and the CE.
  D. 6VPE is functionally equivalent to VPNv4.