Exercise: Tcp Ip

Questions for: Tcp Ip

Which class of IP address provides a maximum of only 254 host addresses per network ID?
A:
Class A
B:
Class B
C:
Class C
D:
Class D
Answer: C
A Class C network address has only 8 bits for defining hosts: 28 - 2 = 254.
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Which of the following services use UDP?
  1. DHCP
  2. SMTP
  3. SNMP
  4. FTP
  5. HTTP
  6. TFTP
A:
1, 3 and 6
B:
2 and 4
C:
1, 2 and 4
D:
All of the above
Answer: A
DHCP, SNMP, and TFTP use UDP.
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The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?
A:
Application
B:
Host-to-Host
C:
Internet
D:
Network Access
Answer: C
The four layers of the DoD model are Application/Process, Host-to-Host, Internet, and Network Access. The Internet layer is equivalent to the Network layer of the OSI model.
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Which of the following allows a router to respond to an ARP request that is intended for a remote host?
A:
Gateway DP
B:
Reverse ARP (RARP)
C:
Proxy ARP
D:
Inverse ARP (IARP)
Answer: C
Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.
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Which of the following is private IP address?
A:
12.0.0.1
B:
168.172.19.39
C:
172.15.14.36
D:
192.168.24.43
Answer: D
Class A private address range is 10.0.0.0 through 10.255.255.255. Class B private address range is 172.16.0.0 through 172.31.255.255, and Class C private address range is 192.168.0.0 through 192.168.255.255.
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