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


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

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

3.多項(xiàng)選擇題Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true?（）

A. The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
B. The DHCP Discover message uses UDP as the transport layer protocol.
C. The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
D. The DHCP Discover message uses TCP as the transport layer protocol.
E. The DHCP Discover message does not use a Layer 2 destination address.
F. The DHCP Discover message does not require a transport layer protocol.

5.單項(xiàng)選擇題The corporate head office of TestKing has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence,what will happen?（）

A. UDP will send an ICMP Information Request to the source host.
B. UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
C. UDP will drop the datagrams.
D. UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.
E. UDP will not acknowledge the datagrams and wait for a retransmission of the datagrams.

最新試題

Which of the following correctly describe steps in the OSI data encapsulation process?（）

題型：多項(xiàng)選擇題

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

題型：?jiǎn)雾?xiàng)選擇題

Which Frame Relay feature is responsible for transmitting keepalives to ensure that the PVC does not shut down because of inactivity?（）

題型：?jiǎn)雾?xiàng)選擇題

Which of the following describe router functions?（）

題型：多項(xiàng)選擇題

Five minutes after issuing the show running-config command, a technician enters the command again and notices that several access list statements have been altered. Because of this, the technician believes that the router is being configured by an unknown person through Telnet. Before changing the router passwords, the technician would like to discover if anyone is connected to the router by Telnet and stop them from making further changes.Which commands will accomplish these options?（）

題型：多項(xiàng)選擇題

Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational? （）

題型：?jiǎn)雾?xiàng)選擇題

What is a global command?（）

題型：?jiǎn)雾?xiàng)選擇題

Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）

題型：多項(xiàng)選擇題

Identify three valid host addresses in the 192.168.27.0 network with a subnet mask of 255.255.255.240. （）

題型：多項(xiàng)選擇題

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

題型：多項(xiàng)選擇題