Unit 3 Review

Question 1

Where are basic input/output system (BIOS) settings saved?

Answer 1

Complementary metal oxide semiconductor (CMOS) memory

Question 2

What type of power supply is most commonly used in computers today?

Answer 2

Switching

Question 3

What was developed to enhance a computer’s video subsystem because of the increased performance requirements on high-end PCs?

Answer 3

Accelerated Graphics Port (AGP)

Question 4

Why is it essential for critical information from hard disk drives to be backed up or copied onto other media?

Answer 4

Disk drives are subject to mechanical failure

Question 5

What performs the function of displaying the screen you see on a computer monitor?

Answer 5

Graphics/video card

Question 6

Which operating system (OS) is a clone of Unix?

Answer 6

LINUX

Question 7

Which action is not a possible result of computer system damage originating from viruses?

Answer 7

Redirecting power supply voltages

Question 8

What is a common way malicious code can get into your system?

Answer 8

Clicking an e-mail link or attachment

Question 9

How many traditional Unix directories are there?

Answer 9

7

Question 10

What directory is the highest-level directory in the Unix file system?

Answer 10

root

Question 11

What is considered the standard Unix editor?

Answer 11

vi

Question 12

What layer of the Open Systems Interconnect (OSI) model provides a variety of coding and conversion functions applied to application layer data?

Answer 12

presentation

Question 13

Who is the governing body for information technology (IT) communications within the Department of Defense (DOD)?

Answer 13

DISA

Question 14

In positive acknowledgement, what does the sender do?

Answer 14

Keeps a record of each data packet sent and expects an acknowledgement

Question 15

Flow control methods prevent network congestion by

Answer 15

ensuring transmitting devices do not overwhelm receiving devices with data

Question 16

Which connection protocol sends out data packets to the receiving system and does not require a receipt acknowledgement?

Answer 16

Connectionless-oriented communication

Question 17

User Datagram Protocol (UDP) is best for what type of transmission?

Answer 17

Sending small amounts of data where guaranteed delivery is not required

Question 18

What is the basic communication language or protocol of the Internet?

Answer 18

Transmission Control Protocol/Internet Protocol

Question 19

What protocol enables Transmission Control Protocol/Internet Protocol (TCP/IP) to Internetwork?

Answer 19

Internet Protocol

Question 20

In what octet of an Internet Protocol (IP) address can you identify the class of the address?

Answer 20

First

Question 21

Internet Protocol Version 6 (IPv6) addresses are how much larger than Internet Protocol Version 4 (IPv4) addresses?

Answer 21

Four times larger

Question 22

What are the three types of Internet Protocol Version 6 (IPv6) addresses?

Answer 22

Unicast, multicast, and anycast

Question 23

When a client computer initiates contact with a server, what does it use to request a particular service?

Answer 23

Port numbers

Question 24

What network type is essentially a private Internet for a company or organization?

Answer 24

Intranet

Question 25

What are Intranets that share a portion of their content with customers, suppliers, or other businesses, but not with the public?

Answer 25

Extranets

Question 26

A wide area network (WAN) connects networks that are typically separated by

Answer 26

geographical distances

Question 27

What network topology consists of devices connected to a common or shared cable?

Answer 27

Bus

Question 28

What network topology consists of cabling segments from each computer connecting to a centralized component?

Answer 28

Star

Question 29

In what network topology does each workstation act as a repeater for a transmission?

Answer 29

Ring

Question 30

What device modulates signals to encode digital information and demodulates signals to decode the transmitted information?

Answer 30

Modem

Question 31

What device logically separates a single network into multiple segments or collision domains in Ethernet networks?

Answer 31

Switch

Question 32

If a router does not know how to forward a packet, what does it do?

Answer 32

Drops the Packet

Question 33

In what routing method does a network administrator program a router to use specific paths between nodes?

Answer 33

static routing

Question 34

What term best describes when a sender locks transmitted information down with a secret combination, or key, and the receiver can unlock the information assuming they have the same key?

Answer 34

encryption

Question 35

What could happen if you used the wrong type of radio-guide (RG) cable?

Answer 35

Equipment damage or system failure