Cisco 350-029 Online Practice Questions and Exam Preparation

Cisco 350-029 Online Questions & Answers

• Question 281:

  Which three modes are the operating of HDLC? (Choose three)

  A. asynchronous balanced mode (ABM)
  B. normal response mode (NRM)
  C. normal peer mode (NPM)
  D. asynchronous client mode (ACM)
  E. asynchronous response mode (ARM)
  A. asynchronous balanced mode (ABM)
  B. normal response mode (NRM)
  E. asynchronous response mode (ARM)

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  Normal response mode allows operation over half-duplex communication links, as long as the primary is aware that it may not transmit when it has given permission to a secondary. Asynchronous response mode is an HDLC addition[1] for use over full-duplex links. While retaining the primary/secondary distinction, it allows the secondary to transmit at any time. Asynchronous balanced mode added the concept of a combined terminal which can act as both a primary and a secondary. There are some subtleties about this mode of operation; while many features of the protocol do not care whether they are in a command or response frame, some do, and the address field of a received frame must be examined to determine whether it contains a command (the address received is ours) or a response (the address received is that of the other terminal).

• Question 282:

  BCP (Best Common Practices) 38/RFC 2827 Ingress and Egress Packet Filtering would help mitigate what classification of attack?

  A. Denial of service attack
  B. Sniffing attack
  C. Spoofing attack
  D. Reconnaisance attack
  E. Port Scan attack
  C. Spoofing attack

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  6. Summary Ingress traffic filtering at the periphery of Internet connected networks will reduce the effectiveness of source address spoofing denial of service attacks. Network service providers and administrators have already begun implementing this type of filtering on periphery routers, and it is recommended that all service providers do so as soon as possible. In addition to aiding the Internet community as a whole to defeat this attack method, it can also assist service providers in locating the source of the attack if service providers can categorically demonstrate that their network already has ingress filtering in place on customer links. Corporate network administrators should implement filtering to ensure their corporate networks are not the source of such problems. Indeed, filtering could be used within an organization to ensure users do not cause problems by improperly attaching systems to the wrong networks. The filtering could also, in practice, block a disgruntled employee from anonymous attacks. It is the responsibility of all network administrators to ensure they do not become the unwitting source of an attack of this nature.

• Question 283:

  Which three statements about the route target (RT) are true? (Choose three.)

  A. The RT is a BGP extended community.
  B. The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address.
  C. When a VPN route that is learned from a CE router is injected into BGP, one or more RTs are associated with it
  D. The distribution of VPN routing information is controlled through the use of VPN RTs
  E. When a VPN route that is learned from a CE router is injected into BGP, there is always one RT that is associated with it.
  A. The RT is a BGP extended community.
  C. When a VPN route that is learned from a CE router is injected into BGP, one or more RTs are associated with it
  D. The distribution of VPN routing information is controlled through the use of VPN RTs

• Question 284:

  What is the port number of the IPsec Encapsulating Security Payload packet?

  A. UDP port 50
  B. IP protocol 51
  C. TCP port 51
  D. TCP port 50
  E. IP protocol 50
  F. UDP port51
  E. IP protocol 50

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  6.2. Managed Security services traversing the core

  AH operates directly on top of IP, using IP protocol number 51. ESP operates directly on top of IP, using IP protocol number 50.

• Question 285:

  What best explains the BGP route-reflector function?

  A. None of the above.
  B. BGP route-reflector does not have to be in the forwarding path of data coming from its clients.
  C. BGP route-reflector will stop reflecting the routes if they're not directly-connected clients.
  D. BGP route-reflector should be in forwarding path of data coming from its clients.
  B. BGP route-reflector does not have to be in the forwarding path of data coming from its clients.

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• Question 286:

  In Cisco IOS XR Software Multicast Routing Implementation, which three features are supported in IPv6 on Cisco CSR routers? (Choose three.)

  A. Multicast NSF
  B. PIM-SSM
  C. OOR handling
  D. Aggregation multicast
  E. Integrated multicast
  F. PIM-Bidirectional
  A. Multicast NSF
  B. PIM-SSM
  F. PIM-Bidirectional

• Question 287:

  In MPLS traffic engineering, which one of the following protocols is used for Path Setup?

  A. BGP
  B. OSPF
  C. ISIS
  D. RSVP
  D. RSVP

• Question 288:

  Refer to the exhibit.

  

  All routers are running IS-IS. Which three routers can be Level 1 Only routers? (Choose three.)

  A. A
  B. B
  C. C
  D. D
  E. E
  F. F
  G. G
  H. H
  A. A
  D. D
  H. H

• Question 289:

  What is the default maximum transmission unit on the Cisco router ATM interface?

  A. 4470 bytes
  B. 1516 bytes
  C. 9288 bytes
  D. 1500 bytes
  E. 1492 bytes
  A. 4470 bytes

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  Why are MTUs 4470 Bytes?

  Most Cisco ATM router interfaces use a default MTU size of 4470 bytes. This number was chosen to match exactly Fiber Distributed Data Interface (FDDI) and High-Speed Serial Interface (HSSI) interfaces for autonomous switching.

• Question 290:

  In AToM, control word is an optional 4-byte field used in the pseudowire packet. The control word carries generic and Layer 2 payload-specific information to emulate L2 packets correctly. In pseudowire packet, where is this control word inserted?

  A. Inserted between the MPLS label stack and the Layer 3 payload
  B. Inserted between the MPLS label stack and the Layer 3 Header
  C. Inserted between the MPLS label stack and the Layer 2 payload
  D. Inserted between the MPLS label stack and the Layer 2 header
  D. Inserted between the MPLS label stack and the Layer 2 header