單項(xiàng)選擇題Catalyst switches utilize a special technology to identify and prevent topology loops and ensure that data flows properly through a single network path. What is the name of this technology?()

A. VTP
B. ISL
C. 802.1Q
D. STP
E. None of the above


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1.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

3.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

4.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.

5.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

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Which connections allow the use of full-duplex Ethernet?()

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Which characteristics are representative of a link-state routing protocol?()

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What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?()

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Which of the following if addresses can be assigned to host devices?()

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A technician at TestKing needs to update the network documentation. One of the tasks includes documenting the name of the IOS image file of each router in the network.Which commands could be used to find this information?()

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