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

题目
单选题
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

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相似问题和答案

第1题：

Which layer 2 protocol encapsulation type supports synchronous and asynchronous circuis and has built－in security mechanisms?()

A. Frame Relay

B. HDLC

C. x.25

D. PPP


参考答案：D

第2题：

What does the "Inside Global" address represent in the configuration of NAT?（）

  • A、the summarized address for all of the internal subnetted addresses
  • B、the MAC address of the router used by inside hosts to connect to the Internet
  • C、a globally unique， private IP address assigned to a host on the inside network
  • D、a registered address that represents an inside host to an outside network

正确答案:D

第3题：

An authentication request for a PPP over ATM client has been returned to the router with an address of 255.255.255.254.What does this indicate to the router?()

A. A static IP address is used.

B. An unnumbered address is used.

C. The returned RADIUS address is used.

D. The IP address-pool configuration is used.


参考答案：D

第4题：

ISL is being configured on a Company switch.  Which of the following choices are true regarding  the ISL protocol？ （）

  • A、 It can be used between Cisco and non-Cisco switch devices.
  • B、 It calculates a new CRC field on top of the existing CRC field.
  • C、 It adds 4 bytes of protocol-specific information to the original Ethernet frame.
  • D、 It adds 30 bytes of protocol-specific information to the original Ethernet frame.

正确答案:B,D

第5题：

What does FRTP stand for？（）

  • A、Frame Relay Top Pseudowire
  • B、Frame Relay Traffic Pseudowire
  • C、Frame Relay Traffic Protocol
  • D、Frame Relay Traffic Policing

正确答案:D

第6题：

When configuring a serial interface on a router, what is the default encapsulation?()

A. atm-dxi

B. frame-relay

C. hdlc

D. lapb

E. ppp


参考答案：C

第7题：

When configuring a serial interface on a router, what is the default encapsulation?（）

  • A、atm-dxi
  • B、frame-relay
  • C、hdlc
  • D、lapb
  • E、ppp

正确答案:C

第8题：

When you display the routing table by entering the show route command, what does the* indicate?()

A.The route is a direct route.

B.The route was selected as active.

C.The route is a default route.

D.The route was learned using a dynamic routing protocol.


参考答案：B

第9题：

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

正确答案:B

第10题：

When you display the routing table by entering the show route command, what does the* indicate?（）

  • A、The route is a direct route.
  • B、The route was selected as active.
  • C、The route is a default route.
  • D、The route was learned using a dynamic routing protocol.

正确答案:B

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