Network Fundamentals

During TCP/IP communication between two network hosts, information is encapsulated on the sending host and decapsulated on the receiving host using the OSI model. Match the information format on the left with the appropriate layer of the OSI model on the right.

1. packets - network layer 2. segements - transport layer 3. frames - data link layer 4. bits - physical layer

Match each networking function or device on the left with its associated OSI model layer on the right.

Application layer-HTTP Presentation layer-Encapsulation Session layer-Session ID number Transport layer-Port number Network layer-Router Data Link layer-Switch Physical layer-Modem

Which of the following tasks is associated with the Session layer? Answer IP address assignment Connection establishment Port number assignment Data block breakdown

Connection establishment

What is the basic purpose of the OSI Physical layer? Answer Maintain a list of known networks and neighboring routers. Define when devices have access to the LAN. Coordinate rules for sending and receiving electrical signals. Define how physical network devices are identified on a network.

Coordinate rules for sending and receiving electrical signals.

In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.) Data encryption and compression End-to-end flow control Network services Data format specifications Data frame transmission

Data encryption and compression Data format specifications

Which of the following functions are performed at the Physical layer of the OSI model?

Data movement across network cables

Which of the following are included as part of the Data Link layer specifications? (Select two.) Digital data conversion Physical topology Cable and connector specifications Data transmission between hosts Physical network device identification

Data transmission between hosts Physical network device identification

Which of the following functions are performed by the OSI Transport layer? (Select three.) End-to-end flow control Consistent data formatting between dissimilar systems Packet formatting for delivery through the medium Path identification and selection Reliable message delivery Media access control, logical topology, and device identification Data segmentation and reassembly

End-to-end flow control Reliable message delivery Data segmentation and reassembly

In the OSI model, which of the following functions are performed at the Application layer? (Select two.) Device control for data transmission rates. Integration of network functionality into the host operating system. Enabling of communication between network clients and services. Communication setup, maintenance, and teardown. Standard setting for sending and receiving signals.

Integration of network functionality into the host operating system. Enabling of communication between network clients and services.

The Data Link layer of the OSI model is comprised of two sublayers. Which two are they? Answer MAC CRC ARP PAN LLC

LLC , MAC

Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once.

Presentation layer- Application Data Link layer- Network Application layer- Application Session layer-Application Network layer-Internetwork Transport layer-Transport

Listen to exam instructions In the OSI model, what is the primary function of the Network layer? Ensure that packets are delivered with no loss or duplication. Enable communication between network clients and services. Transmit data frames. Route messages between networks.

Route messages between networks.

Which OSI model layer is responsible for guaranteeing reliable message delivery? Session Transport Data Link Application

Transport

Drag the information type on the left to the appropriate layer of the TCP/IP model it's associated with on the right.

Transport Layer: Segments Link layer: Frames Application Layer: Data Internet Layer: Packets