OSI Model Quiz

In the OSI model, the layer 4 UDP PDU is called:

Datagram

In the context of the OSI model, the term "data encapsulation" is used to describe a process where each layer of the OSI model adds its own control information to the original data that is being passed across the layers from the physical layer up to the application layer.

False

Transmission Control Protocol (TCP) is an example of a connection-less protocol. Because TCP does not support three way handshake while establishing a network connection, it is referred to as unreliable or best effort protocol. (Ex. Video and Audio streaming data)

False

User Datagram Protocol (UDP) is a connection oriented protocol using a three way handshake which is a set of initial steps required for establishing network connection. UDP supports retransmission of lost packets, flow control (managing the amount of data that is being sent), and sequencing (rearranging packet that arrived in order). (Ex. of UDP would be Transmission of text and image data.

False

Which of the following protocols reside(s) at the application layer of the OSI model?

HTTP, FTP and SMTP

Which of the following reside at the physical layer of the OSI model?

Hub Network cabling Repeater

What is the name of a network layer protocol that specifies the format of packets and addressing scheme in network communications?

IP

Which of the following does not refer to the OSI UDP datagram header?

Layer 3 header

Which of the following does not refer to the TCP OSI segment header?

Layer 3 header

What are the characteristic components of the OSI data link layer?

MAC address Switch Frame

A limit amount of data that can be transmitted over a network without fragmentation is referred to as:

MTU

Data format translation, data compression, and data encryption/decryption take place at the:

Presentation layer of the OSI model

Which of the following refers to the OSI network layer components?

Router, IP address and packet

Which OSI layer assumes the responsibility for opening, closing and maintaining connections between applications?

Session Layer

Authentication and Authorization take place at the:

Session Layer of the OSI Model

Which of the following refers to the OSI layer 2 header data?

Source MAC address and Destination MAC address

Which of the following refer to examples of network layer header data?

Source port number and Destination port number

Which of the following refers to a data link layer device designed to forward frames between network segments?

Switch

In the OSI model, the payload data (user data) is the actual data that is being nested between header and tail control information.

True

Which of the protocols reside at the OSI transport layer?

UDP, TCP

In the OSI model, the physical layer PDU is known as:

a bit

Which of the following TCP flags are used for establishing a network via TCP three-way handshake?

ACK, SYN

In the OSI model, the layer 2 PDU is called:

frame

In the OSI model, the layer 3 PDU is known as:

packet

In the OSI model, the layer 4 TCP PDU is known as:

segment