Unit 3 Review Flashcards
(35 cards)
Where are basic input/output system (BIOS) settings saved?
Complementary metal oxide semiconductor (CMOS) memory
What type of power supply is most commonly used in computers today?
Switching
What was developed to enhance a computer’s video subsystem because of the increased performance requirements on high-end PCs?
Accelerated Graphics Port (AGP)
Why is it essential for critical information from hard disk drives to be backed up or copied onto other media?
Disk drives are subject to mechanical failure
What performs the function of displaying the screen you see on a computer monitor?
Graphics/video card
Which operating system (OS) is a clone of Unix?
LINUX
Which action is not a possible result of computer system damage originating from viruses?
Redirecting power supply voltages
What is a common way malicious code can get into your system?
Clicking an e-mail link or attachment
How many traditional Unix directories are there?
7
What directory is the highest-level directory in the Unix file system?
root
What is considered the standard Unix editor?
vi
What layer of the Open Systems Interconnect (OSI) model provides a variety of coding and conversion functions applied to application layer data?
presentation
Who is the governing body for information technology (IT) communications within the Department of Defense (DOD)?
DISA
In positive acknowledgement, what does the sender do?
Keeps a record of each data packet sent and expects an acknowledgement
Flow control methods prevent network congestion by
ensuring transmitting devices do not overwhelm receiving devices with data
Which connection protocol sends out data packets to the receiving system and does not require a receipt acknowledgement?
Connectionless-oriented communication
User Datagram Protocol (UDP) is best for what type of transmission?
Sending small amounts of data where guaranteed delivery is not required
What is the basic communication language or protocol of the Internet?
Transmission Control Protocol/Internet Protocol
What protocol enables Transmission Control Protocol/Internet Protocol (TCP/IP) to Internetwork?
Internet Protocol
In what octet of an Internet Protocol (IP) address can you identify the class of the address?
First
Internet Protocol Version 6 (IPv6) addresses are how much larger than Internet Protocol Version 4 (IPv4) addresses?
Four times larger
What are the three types of Internet Protocol Version 6 (IPv6) addresses?
Unicast, multicast, and anycast
When a client computer initiates contact with a server, what does it use to request a particular service?
Port numbers
What network type is essentially a private Internet for a company or organization?
Intranet