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TCP/IP - Networking MCQ Questions and answers |Technical Aptitude

Learn Transmission Control Protocol (TCP) and the Internet Protocol (IP) mcq questions and answers with easy and logical explanations for various competitive examination, interview and entrance test

1
Which of the following services use TCP?
1. DHCP
2. SMTP
3. HTTP
4. TFTP
5. FTP
Discuss
Answer & Solution
Answer: Option B
Solution:
SMTP, HTTP and FTP use TCP.
2
What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?
Discuss
Answer & Solution
Answer: Option B
Solution:
The four layers of the TCP/IP stack (also called the DoD model) are Application/Process, Host-to-Host, Internet, and Network Access. The Host-to-Host layer is equivalent to the Transport layer of the OSI model.
3
Which of the following describe the DHCP Discover message?
1. It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
2. It uses UDP as the Transport layer protocol.
3. It uses TCP as the Transport layer protocol.
4. It does not use a layer 2 destination address.
Discuss
Answer & Solution
Answer: Option B
Solution:
A client that sends out a DHCP Discover message in order to receive an IP address sends out a broadcast at both layer 2 and layer 3. The layer 2 broadcast is all Fs in hex, or FF:FF:FF:FF:FF:FF. The layer 3 broadcast is FF:FF:FF:FF:FF:FF, which means all networks and all hosts. DHCP is connectionless, which means it uses User Datagram Protocol (UDP) at the Transport layer, also called the Host-to-Host layer.
4
You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?
Discuss
Answer & Solution
Answer: Option C
Solution:
Dynamic Host Configuration Protocol (DHCP) is used to provide IP information to hosts on your network. DHCP can provide a lot of information, but the most common is IP address, subnet mask, default gateway, and DNS information.
5
Which of the following is private IP address?
Discuss
Answer & Solution
Answer: Option D
Solution:
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.
6
Which of the following allows a router to respond to an ARP request that is intended for a remote host?
Discuss
Answer & Solution
Answer: Option C
Solution:
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?
Discuss
Answer & Solution
Answer: Option C
Solution:
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
Discuss
Answer & Solution
Answer: Option A
Solution:
DHCP, SNMP, and TFTP use UDP.
9
Which class of IP address provides a maximum of only 254 host addresses per network ID?
Discuss
Answer & Solution
Answer: Option C
Solution:
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?
Discuss
Answer & Solution
Answer: Option A
Solution:
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.