Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

Answer» 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.
Discussion
2.

What protocol is used to find the hardware address of a local device?

Answer» Address Resolution Protocol (ARP) is used to find the hardware address from a known IP address.
Discussion
3.

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?

Answer» 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.
Discussion
4.

Which class of IP address provides a maximum of only 254 host addresses per network ID?

Answer» A Class C network address has only 8 bits for defining hosts: 28 - 2 = 254.
Discussion
5.

If you use either Telnet or FTP, which is the highest layer you are using to transmit data?

Answer» 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.
Discussion
6.

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?

Answer» 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.
Discussion
7.

Which layer 4 protocol is used for a Telnet connection?

Answer» Although Telnet does use TCP and IP (TCP/IP), the question specifically asks about layer 4, and IP works at layer 3. Telnet uses TCP at layer 4.
Discussion
8.

Which statements are true regarding ICMP packets?

Answer» ICMP is used for diagnostics and destination unreachable messages. ICMP is encapsulated within IP datagrams, and because it is used for diagnostics, it will provide hosts with information about network problems.
Discussion
9.

What is the address range of a Class B network address in binary?

Answer» The range of a Class B network address is 128-191. This makes our binary range 10xxxxxx.
Discussion