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多项选择题
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.
多项选择题
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
单项选择题
A. Binary
B. Decimal
C. Hexadecimal
D. Octal
E. All of the above
单项选择题
A. CDP
B. SNMP
C. DHCP
D. ARP
E. DNS
F. None of the above
多项选择题
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.
多项选择题
A.DNS
B.Telnet
C.SMTP
D.SNMP
E.HTTP
F.TFTP
单项选择题
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.
多项选择题
A. source address
B. options
C. sequence number
D. sources
E. destination port
F. checksum
多项选择题
A. NTP
B. NNTP
C. SMTP
D. SNMP
E. HTTPS
F. TFTP