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Networking - TCP/IP

Exercise : TCP/IP - TCP/IP
  • TCP/IP - TCP/IP
6.
Which of the following allows a router to respond to an ARP request that is intended for a remote host?
Gateway DP
Reverse ARP (RARP)
Proxy ARP
Inverse ARP (IARP)
Answer: Option
Explanation:
Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.
7.
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?
Application
Host-to-Host
Internet
Network Access
Answer: Option
Explanation:
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.
8.
Which of the following services use UDP?
  1. DHCP
  2. SMTP
  3. SNMP
  4. FTP
  5. HTTP
  6. TFTP
1, 3 and 6
2 and 4
1, 2 and 4
All of the above
Answer: Option
Explanation:
DHCP, SNMP, and TFTP use UDP.
9.
Which class of IP address provides a maximum of only 254 host addresses per network ID?
Class A
Class B
Class C
Class D
Answer: Option
Explanation:
A Class C network address has only 8 bits for defining hosts: 28 - 2 = 254.
10.
If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
Application
Presentation
Session
Transport
Answer: Option
Explanation:
Both FTP and Telnet use TCP at the Transport layer; however, they both are Application layer protocols, so the Application layer is the best answer.
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