Deck 1: Introducing Networks

Question 1

The term ____ refers to the wire cabling, such as coaxial or the more commonly used twisted-pair, that form the connections in most networks.

A) media
B) EMI
C) server
D) node

Answer 1

A

Question 2

The seven layers of the OSI reference model communicate with one another via ____ communication.

A) multicast
B) logical
C) peer
D) unicast

Answer 2

C

Question 3

Computers must use a common protocol to communicate properly.

Answer 3

True

Question 4

The ____ sublayer of the Data Link layer defines how data is packaged for the network.

A) MAC
B) RPC
C) CRC
D) LLC

Question 5

The term ____ refers to a series of storage devices, such as tapes, hard drives, and CDs, that are networked together to provide very fast data storage for a network or subnetwork.

A) MAN
B) WAN
C) SAN
D) LAN

Question 6

The term ____ refers to the intermediate stage between a LAN and a WAN.

A) SAN
B) LAN
C) WAN
D) MAN

Question 7

Peer communication allows error checking to occur on two separate layers simultaneously.

Question 8

Two computers connected by a wire cable form a network.

Question 9

The part of the company's network that allows access to nonemployees is called the ____, which is accessed over or through the Internet.

A) intranet
B) extranet
C) publicnet
D) privatenet

Question 10

The part of the company's network that allows access to employees is called the ____, which is completely separate from the Internet.

A) intranet
B) LAN
C) SAN
D) extranet

Question 11

In 1954, the International Organization for Standardization (ISO) presented the Open Systems Interconnection (OSI) model.

Question 12

A(n) ____ address is a 48-bit address represented as a 12-digit hexadecimal number given to each network card during production.

A) CRC
B) RPC
C) LLC
D) MAC

Question 13

Because the MAC address is added during the manufacturing process, it is a permanent marking. For this reason, the address is also known as a ____.

A) NIC
B) BIA
C) CRC
D) CSMA/CD

Question 14

Many LANs and WANs contain several segments. Dividing a network into segments reduces performance.

Question 15

The ____ is information that is used to determine whether data was corrupted during transmission.

A) LLC
B) CRC
C) MAC
D) RPC

Question 16

____ networks have computers that are servers and computers that act as clients to those servers.

A) EMI
B) Peer-to-peer
C) Peer-to-node
D) Client/server

Question 17

The OSI model ____ layer defines the mechanical, electrical, and procedural events that occur during the physical transmission of electronic signals on the wire.

A) Physical
B) Transport
C) Data Link
D) Network

Question 18

The ____ sublayer of the Data Link layer defines the media access method and provides a unique identifier for the network card.

A) MAC
B) LLC
C) RPC
D) CRC

Question 19

A ____ is contained within a company or department and located in a single geographic area, usually a building or part of a building.

A) WAN
B) LAN
C) SAN
D) MAN

Question 20

A ____ spans multiple geographic areas and is usually connected by common telecommunication carriers.

A) LAN
B) SAN
C) WAN
D) MAN

Question 21

Data sent by a connectionless transport is called a ____.

A) block
B) datagram
C) cell
D) package

Question 22

What are virtual private networks?

Question 23

The term computer network, or simply ____________________, refers to the connection of two or more computers by some type of medium.

Question 24

____ protocols, such as User Datagram Protocol (UDP), do not require an ACK.

A) Presentation-layer
B) Connection-oriented
C) Connectionless
D) Network-layer

Question 25

Why do we use networks?

Question 26

What are the responsibilities of the Transport layer of the OSI model?

Question 27

A(n) ____________________ is a network that uses a public communications infrastructure to facilitate private communication between a company LAN and remote employees.

Question 28

What are the responsibilities of the OSI model Physical layer?

Question 29

The protocols at the Network layer allow computers to route packets to remote networks using a ____ address.

A) burned in
B) BIA
C) logical
D) physical

Question 30

____ protocols, such as TCP, require an acknowledgment (ACK) of the receipt of data packets.

A) Connectionless
B) SYN
C) Application-layer
D) Connection-oriented

Question 31

What are the services provided by the Session layer of the OSI model?

Question 32

What are the advantages of a layered networking model?

Question 33

A(n) ____________________ is a device that allows a computer or other device to connect to a network through the media.

Question 34

Each layer in a protocol stack may add a(n) ____ to the data as it is passed down the layers.

A) PDU
B) MTU
C) CRC
D) LLC

Question 35

What are the responsibilities of the OSI model Data Link layer?

Question 36

Describe various types of servers in a network.

Question 37

As the layers pass the data through the protocol stack, the addition of a header and/or trailer is called ____________________.

Question 38

A(n) ____, which is also known as a header or a trailer, is specific information that is sent from one layer on the source computer to the same layer on the destination computer.

A) LLC
B) MTU
C) PDU
D) CRC

Question 39

What are the functions of the Network layer of the OSI model?

Question 40

In a client/server network, the ____________________ host the resources for the clients to use and provide security.

Question 42

What are the responsibilities of the Presentation layer of the OSI model?