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


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1.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.

2.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

3.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

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

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

6.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.

8.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.

9.多項(xiàng)選擇題Although TCP segments differ from UDP segments, they both contain some common fields. What two segments do they share in common?()

A. source address
B. options
C. sequence number
D. sources
E. destination port
F. checksum

10.多項(xiàng)選擇題Which of the following protocols utilize TCP?()

A. NTP
B. NNTP
C. SMTP
D. SNMP
E. HTTPS
F. TFTP

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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?()

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

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New switches have been purchased for a network upgrade. The objective for the network design emphasizes efficient, error-free transport instead of fast transport.Which switching mode should be configured on the new switches to provide error-free transport to the network? ()

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A network host is configured as follows: Host IP address: 192.168.16.183 Subnet mask: 255.255.255.224 Default gateway: 192.168.16.190 Which of the following statements describe the network to which this host is attached?()

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All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?()

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Which of the following describe router functions?()

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Which of the following options lists the steps in PPP session establishment in the correct order?()

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TestKing.com has allocated the IP add 199.144.27.0 is its network, to provide flexibility for the LAN design, a subnet mask of 255.255.255.240 has been chosen. Which of the following address can be assigned to LAN on the resulting subnets.()

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What should the configuration register value be after successfully completing the password recover procedure and returning the router to normal operation? ()

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