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What does the protocol field inside the PPP frame indicate？（）A、the protocol used to determine the authentication methodB、the protocol used to identify the data in the Information fieldC、the protocol used to carry the PPP frameD、the protocol used to decode

题目

What does the protocol field inside the PPP frame indicate？（）

  • A、the protocol used to determine the authentication method
  • B、the protocol used to identify the data in the Information field
  • C、the protocol used to carry the PPP frame
  • D、the protocol used to decode the FCS field
  • E、the protocol used to detect the number of padding bytes
参考答案和解析
正确答案:B
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相似问题和答案

第1题：

You are a technician at TestKing. Your newly appointed TestKing trainee wants to know what the CDP is.What would your reply be?()

A. It is globally enabled by default on Cisco routers.

B. It is globally enabled by default on all routers.

C. It is a proprietary protocol.

D. It is a non-proprietary protocol.

E. It can be used to gather hardware and protocol information about neighbor devices.


参考答案：A, C, E

第2题：

Which protocol is an open standard protocol framework that is commonly used in VPNs,to provid secure end－to－end communication?()

A. L2TP

B. IPsec

C. PPTP

D.RSA


参考答案：B

第3题：

Which protocol is used between the RAS and the authentication server in a narrowband network environment?()

A.RADIUS

B.PPPPAP

C.MSCHAP

D.PPPCHAP


参考答案：A

第4题：

What statement is true？（）

  • A、Link Control Protocol（LCP） is used for basic PPP link setup and operation
  • B、Link Control Protocol（LCP） is used for denying PPP connections to unauthorized devices.
  • C、Link Control Protocol（LCP） for PPP is synonymous to ARP for Ethernet.
  • D、None of the above

正确答案:A

第5题：

BGP runs over a reliable transport （ ）. This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and （请作答此空）. Any authentication scheme used by the transport protocol may be used in addition to BGP's own （ ）mechanisms. The error notification mechanism used in BGP （ ）that the transport protocol supports a “graceful” close, i.e., that all outstanding data will be delivered （ ）the connection is closed.

A.synchronization
B.conflict
C.transport
D.sequencing

答案：D
解析：
bgp通过可靠的传输协议运行。这样就不需要实现显式的更新分段、重新传输，确认和排序。使用的任何身份验证方案除了bgp自己的身份验证机制之外，还可以使用传输协议的验证方案。bgp中采用的错误通知机制，假定传输协议支持“正常”关闭，也就是说，所有未完成的数据将在连接关闭之前交付。

第6题：

Which two of these are characteristics of the 802.1Q protocol?()

A. it is a layer 2 messaging protocol which maintains vlan configurations across network.

B. it includes an 8-bit field which specifies the priority of a frame.

C. it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes.

D. it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.

E. it is a trunking protocol capable of carring untagged frames.


参考答案：D, E

第7题：

Which protocol is an open standard protocol frame work that is commonly used in VPNs,to provid secureend－to－end communication?()

A.L2TP

B.IPsec

C.PPTP

D.RSA


参考答案：B

第8题：

You have just configured a static default route on router TK1. What is the purpose of a default route?()

A. It is a route to be used when the routing protocol fails.

B. It is a route configured by an ISP that sends traffic into a corporate network.

C. It is a route used when a packet is destined for a remote network that is not listed in the routing table.

D. It is a route manually configured for a specific remote network for which a routing protocol is not configured.

E. It is used to send traffic to a stub network.


参考答案：C

第9题：

What is the purpose of the NBAR protocol discovery？（）

  • A、to build a Packet Description Language Module （PDLM） file to be used in protocol matching
  • B、to discover applications and build class maps for data classification
  • C、to look into the TCP or UDP payload and classify packets based on the content
  • D、to build a database of all application data that passes through the router and queue the data accordingly

正确答案:C

第10题：

Which protocol is used by multicast to prevent loops?（）

  • A、OSPF
  • B、RIP
  • C、RPF
  • D、BGP
  • E、EIGRP

正确答案:C

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