Chapter 2

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How long is a MAC address?

12 hexadecimal characters

How many layers does the OSI model contain?

7

Routers have which of the following capabilities?

They allow you to connect computers with different frame types.

When it receives data from the upper layers, which layer of the OSI model breaks the data into smaller pieces called packets?

Transport

Each 8 bit portion of an IP address has the following range of values

0-255

Which layer of the OSI model adds source and destination MAC addresses to frames?

Data Link

All of the following statements are true about the OSI model EXCEPT ____.

Each protocol needs to understand all of the protocols handling all the other layers.

Which of the following statements best describes an IP address?

It is a unique dotted-octet number assigned to every network node

A NIC performs all the following functions except ____.

It routes data across the most efficient route on the network

What uniquely identifies every NIC

MAC address

MAC is an abbreviation for

Media Access Control

Routers operate at the ____ level of the OSI model.

Network

Which layer of the OSI model uses routers and IP addresses to ensure that packets arrive at the correct system?

Network

Which of these statements best describes an Application Program Interface?

Provides a standard way for programmers to enhance or extend and an application's capabilities.

Which layer of the OSI model manages the connection between machines on the network?

Session

Which statement best describes what happens to frames when the hub sends them to the NICs on the network?

The frames are received by every NIC, but only the NIC with the matching MAC address processes the frame

To be able to communicate with other NICs, each NIC on the same network must use the same ____.

frame type

Use the ____ utility to see what MAC is assigned to a NIC

ipconfig

The MAC address is also known as the ____ address.

physical

Which device can connect different subnets together

router

A MAC address is composed of which two parts?

the manufacturer's number and the NICs unique serial number

Where does the CRC come from in a network frame?

the sending NIC attaches it


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