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cdc > Unit 3 Review > Flashcards

Unit 3 Review Flashcards

1
Q

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

A

Complementary metal oxide semiconductor (CMOS) memory

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2
Q

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

A

Switching

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3
Q

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

A

Accelerated Graphics Port (AGP)

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4
Q

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

A

Disk drives are subject to mechanical failure

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5
Q

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

A

Graphics/video card

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6
Q

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

A

LINUX

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7
Q

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

A

Redirecting power supply voltages

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8
Q

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

A

Clicking an e-mail link or attachment

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9
Q

How many traditional Unix directories are there?

A

7

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10
Q

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

A

root

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11
Q

What is considered the standard Unix editor?

A

vi

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12
Q

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

A

presentation

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13
Q

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

A

DISA

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14
Q

In positive acknowledgement, what does the sender do?

A

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

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15
Q

Flow control methods prevent network congestion by

A

ensuring transmitting devices do not overwhelm receiving devices with data

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16
Q

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

A

Connectionless-oriented communication

17
Q

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

A

Sending small amounts of data where guaranteed delivery is not required

18
Q

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

A

Transmission Control Protocol/Internet Protocol

19
Q

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

A

Internet Protocol

20
Q

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

A

First

21
Q

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

A

Four times larger

22
Q

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

A

Unicast, multicast, and anycast

23
Q

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

A

Port numbers

24
Q

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

A

Intranet

25
Q

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

A

Extranets

26
Q

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

A

geographical distances

27
Q

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

A

Bus

28
Q

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

A

Star

29
Q

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

A

Ring

30
Q

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

A

Modem

31
Q

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

A

Switch

32
Q

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

A

Drops the Packet

33
Q

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

A

static routing

34
Q

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?

A

encryption

35
Q

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

A

Equipment damage or system failure

cdc (6 decks)

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