CompTIA Network+ N10-005 - Networking Concepts - quiz questions section 1

These are some functions of the MAC sublayer.

Defining a unique hardware address for each device on the network. Letting devices on the network have access to the LAN.

What is the basic purpose of the OSI Physical Layer?

Coordinates rules for transmitting bits.

You have a network that uses a logical bus topology. How do messages travel through the network?

Messages are broadcast to all devices connected to the network.

This is a function of the Physical Layer.

Movement of data across network cables.

Which topology connects each device to a neighboring device?

Ring

What is the primary function of the network layer?

Routes messages between networks

You have a small network that uses a hub to connect to multiple devices. What physical topology is used?

Star

Which describes topologies that connect each network device to a central hub?

Star topologies connect each device on the network via a central connection.

What device is used to create a physical star topology?

Switch

Which TCP/IP protocol allows you to exchange video through TCP/IP network that will guarantee delivery?

TCP

Which OSI model layer is responsible for guaranteeing reliable message delivery?

Transport Layer

What does TCP protocol include to ensure transmissions are sent and received without mistakes?

extensive error checking

Which task is associated with the Session Layer?

Connection establishment

What features does the UDP protocol provide?

Connectionless datagram services Low overhead

Which functions are performed at the Presentation Layer?

Encrypt and compress data Specify data format (such as file formats)

What are functions of the transport layer?

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

You have a network that uses a logical ring topology. How do messages travel through the network?

From one device to the next until they reach the destination device.

What are the functions of the data link layer?

Identifying physical networks Controlling how messages are propagated through the network.

What are some functions of the application layer?

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

The Data Link Layer of the OSI model is comprised of two these two sublayers.

LLC MAC

You have implemented an ad-hoc wireless network that doesn't employ a wireless access point. Every wireless network card can communicate directly with another wireless network card on the network. What type of physical network topology has been implemented in this type of network?

Mesh