CompTIA Network+ N10-008 Exam OSI Model Quiz

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

Hub, Network cabling, & Repeater

Physical layer of the OSI model is also known as:

Layer 1

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

MAC address, Network switch, & Ethernet frame

Layer 2 of the OSI model is also referred to as:

Data link layer

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

Switch

Which of the following answers refer to the OSI network layer components?

Router, IP address, & Packet

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 terms refers to the OSI network layer?

Layer 3 header

Which of the protocols listed below reside at the OSI transport layer?

UDP & TCP

Layer 4 of the OSI model is also known as:

Transport layer

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

Layer 5 of the OSI model is also referred to as:

Session layer

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

Presentation layer of the OSI model

The term "Presentation layer" refers to:

Layer 6 of the OSI model

Which of the following protocols reside(s) at the application layer of the OSI model? (Select all that apply)

HTTP, FTP, & SMTP

The application layer of the OSI model is also known as:

Layer 7

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

Bit

PDU stands for BLANK; Essentially, it's the package of information that gets passed around in a network.

Protocol Data Unit

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

Frame

Which of the following answers refer to the OSI layer 2 header data?

Source MAC address & Destination MAC address

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

Packet

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

Source IP address & Destination IP address

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 packets that arrived out of order). Example applications of UDP include transmission of text and image data.

False

Transmission Control Protocol (TCP) is an example of a connectionless protocol. Because TCP does not support three-way handshake while establishing a network connection, it is referred to as unreliable or best-effort protocol. Example applications of TCP include transmission of video and audio streaming data.

False

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

Segment

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

Layer 3 header

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

Datagram

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

Layer 3 header

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

SYN & ACK

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

True

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

Maximum transmission unit (MTU)