题目内容

Which of the following protocols is not a link-layer protocol? ( )

A. Ethernet
B. PPP
C. HDLC
D. IP

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In Link Layer Services of Ethernet, Error Correction is:

A. Cyclic Redundancy Check
B. Internet checksum
C. Read after Write
D. NONE

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Which of the following services can not offered by a link-layer protocol? ( )

A. congestion control
B. Link Access
C. Error control
D. Framing

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( ) protocol serves to coordinate the frame transmissions of the many nodes when multiple nodes share a single broadcast link.

ARP
B. MAC Multiple Access Control
C. ICMP
DNS

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In the following descriptions about MAC address, which one is not correct? ( )

A. The MAC address is the address of one node’s adapter.
B. No two adapters have the same MAC address.
C. The MAC address doesn’t change no matter where the adapter goes.
D. MAC address has a hierarchical structure.

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Which of the following protocols is not a link-layer protocol? ( )

A. Ethernet B. PPP C. HDLC D. IP

In Link Layer Services of Ethernet, Error Correction is:

Which of the following services can not offered by a link-layer protocol? ( )

( ) protocol serves to coordinate the frame transmissions of the many nodes when multiple nodes share a single broadcast link.

In the following descriptions about MAC address, which one is not correct? ( )

A. Ethernet
B. PPP
C. HDLC
D. IP