TCP/IP networking technical interview question6.
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 & Explanation
Answer: Option C
Explanation:
Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.
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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?
A. Application
B. Host-to-Host
C. Internet
D. Network Access
Answer & Explanation
Answer: Option C
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.
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8.
Which of the following services use UDP?
DHCP
SMTP
SNMP
FTP
HTTP
TFTP
A. 1, 3 and 6
B. 2 and 4
C. 1, 2 and 4
D. All of the above
Answer & Explanation
Answer: Option A
Explanation:
DHCP, SNMP, and TFTP use UDP.
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9.
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 & Explanation
Answer: Option C
Explanation:
A Class C network address has only 8 bits for defining hosts: 28 – 2 = 254.
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10.
If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
A. Application B. Presentation
C. Session D. Transport
Answer & Explanation
Answer: Option A
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.