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TCP/IP test
Students who fail to answer at least ten of the following questions correctly are recommended to participate the one-day TCP/IP training.
1, How many IP addresses belong to a network that has a 255.255.255.192 netmask?
a, 32
b, 64
c, 128
d, 256
2, Which of the following flag combinations cannot occur in an IP header?
a, DF:0, MF:0
b, DF:0, MF:1
c, DF:1, MF:0
d, DF:1, MF:1
3, The private IP address-range 172.16.0.0 includes more addresses than the 192.168.0.0 range. How much more?
a, 16 times
b, 32 times
c, 128 times
d, 256 times
4, Which commands cannot modify the routing table on Linux?
a, netstat
b, ip
c, route
d, arp
5, Which address of the following does not belong to a private address-range?
a, 172.19.0.0
b, 224.4.5.1
c, 127.4.4.1
d, 172.32.5.4
6, Why does the TCP header include a header-length field, while the UDP header does not?
a, TCP is a connection-oriented protocol, so the exact length of the header must be known.
b, Because the length of the UDP header is fixed.
c, The TCP protocol does require this field, it is optional.
d, This is a design error of the UDP protocol, therefore UDP is not a reliable data-transfer protocol.
7, Which acronym is a routing protocol?
a, TCP
b, 6bone
c, OSPF
d, CBQ
8, How many bytes long is an IPv4 address?
a, 16
b, 8
c, 6
d, 4
9, Which acronym is not a routing protocol?
a, RIPv2
b, BGP
c, ICMP
d, OSPF
10, Which protocol is used to connect the IP addresses to the physical addresses?
a, ICMP
b, ARP
c, DHCP
d, BOOTP
11, If a packet is a broadcast packet,
a, every host of the subnet receives the packet.
b, only one host of the subnet receives the packet.
c, a group of hosts on the subnet receives the packet.
d, the nearest router receives the packet.
12, When establishing a TCP connection, the following flags are visible in the TCP headers:
a, SYN-ACK-SYNACK
b, SYN-ACK-PSH
c, SYN-SYNACK-ACK
d, SYN-SYNACK-SYNACK
13, What type of packets does the ping application send?
a, udp
b, tcp
c, icmp
d, ipx
14, What is PMTU?
a, The value of the primary MTU of an interface.
b, The maximum packet size permitted on the route.
c, A method to flood a network.
d, A flag of the IP packet.
Solutions