單項(xiàng)選擇題You want your Catalyst switch to implement a switching method that holds a packet in its memory until the data portion of the respected packet reaches the switch.Which method should you employ on your Catalyst switch?()

A. Fast Forward
B. Store and forward
C. Frag-free
D. None of the above


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1.多項(xiàng)選擇題What are two characteristics of "store and forward" switching?()

A. Latency fluctuates regardless of frame size.
B. The switch receives the complete frame before beginning to forward it.
C. Latency through the switch varies with frame length.
D. The switch checks the destination address upon receipt of headers.

3.多項(xiàng)選擇題Which fields are included in the TCP header?()

A. Source Port
B. Acknowledgement Number
C. Request Number
D. Destination Address
E. Window
F. Data

5.單項(xiàng)選擇題Which of the following protocols use both TCP and UDP ports?()

A. FTP
B. SMTP
C. Telnet
D. DNS
E. All of the above

6.多項(xiàng)選擇題What statements are true regarding ICMP packets?()

A. They acknowledge receipt of TCP segments.
B. They guarantee datagram delivery.
C. They can provide hosts with information about network problems.
D. They are encapsulated within IP datagrams.
E. They are encapsulated within UDP datagrams.

7.多項(xiàng)選擇題Which three address ranges are used for internal private address blocks as defined by RFC 1918?()

A. 0.0.0.0 to 255.255.255
B. 10.0.0.0 to 10.255.255.255
C. 172.16.0.0 to 172.16.255.255
D. 172.16.0.0 to 172.31.255.255
E. 127.0.0.0. to 127.255.255.255
F. 192.168.0.0 to 192.168.255.255
G. 224.0.0.0 to 239.255.255.255

8.單項(xiàng)選擇題What does the term computer language refer to?()

A. Binary
B. Decimal
C. Hexadecimal
D. Octal
E. All of the above

10.單項(xiàng)選擇題Which protocol below uses TCP port 443?()

A.HTML
B.HTTPS
C.TFTP
D.Telnet
E.SMTP

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