IT 104 Midterm GMU

Which type of disc is a type of storage media that consists of a flat, round, portable metal disc made of metal, plastic, and lacquer that is written and read by a laser?

Optical

How is printer resolution measured?

dots per inch

What is the descriptor for a filter that warns or blocks you from potentially fraudulent or suspicious websites?

phishing

What is the purpose of memory management?

to optimize the use of RAM

_____ is a type of high-speed memory that a processor can access more rapidly than main memory.

Cache memory

The amount of data, instructions & information that can travel over a communications channel is sometimes called?

bandwidth

You have a camera with a 16 MP resolution. How many pixels are represented by that resolution?

16 million

(Think M=million)

When 8 bits are grouped together as a unit, how many individual characters can these 8 bits represent?

256

Which of the following kinds of file utilities shrink the size of a files

file compression

Which type of software has no restrictions from the copyright holder regarding modifications of the software's

internal instructions and its redistribution?

open source software

Your new home has a vacuum system, what kind of computer is controlling it?

embedded computer

Primary memory is:

VOLATILE

After a computer system is started, portions of the operating system are transferred to ________ as they are needed.

memory

You compose a new song and you now have exclusive rights to sell your song. Of which of the following is this an example?

copyright

Clock speed of the central processing unit (CPU) is often measured in billions of cycles per second also known as _____.

GHz

What is mapping?

The process in which different data models are linked to each other using s defined method.

The primary purpose of a modem is to:

allow digital devices to transmit data over analog phone lines.

Why is virtual memory useful?

Virtual memory is used for storing data for rapid access on a hard drive. This allows use to use it for multitasking, larger programs, flexibility, and changing times.

What numbering system uses only the numbers 0 and 1?

binary system

Name 3 Email Protocol types

SMTP, POP, IMAP

HTTP & HTTPS

Formatting requests and responses between clients and servers

Which of the following kinds of programs displays an online advertisement in a banner or pop-up window on webpages, email, or other Internet service?

adware

What is the most common reason for installing a Wi-Fi hub in a home?

to allow PCs to connect to a network without wires

Which of the following is not part of an APA citation style for an electronic reference?

city from which webpage is published

What does a disk cleanup utility do?

searches for and removes unnecessary files

Which LAN topology REQUIRES all nodes (workstations or terminals) to have a dedicated line that is wired directly to a central computer (server)?

Star

Why is a fragmented disk slower than one that is defragmented?

A fragmented disk has many files stored in noncontiguous sectors.

The formula =$A$1+$A$2 contains:

absolute cell references

You have heard that it is possible to improve your computer's performance by storing all related files for a particular program together. What is the term for this?

defragmenting

Which of the following is a register function?

storing the location from where an instruction was fetched

Which of the following is an application that incorporates data from multiple providers into a new application?

mashup

Which of the following is the most common type of volatile memory?

RAM

Which of the following statements is true of light-emitting diode (LED)?

It enables improved contrast than a liquid crystal display (LCD).

What is the greatest problem with regard to a bus network? It can become ______.

inoperable

When compared to cables that use wire, fiber-optic cables _________.

are capable of carrying significantly more signals

Which of the following file extensions indicates the file is executable?

.exe

Which is NOT an example of open source software?

Office 2012

After a computer system is started, portions of the operating system are transferred to _____ as they are needed.

memory

In a _____-______ network, no fixed path is created between the communicating devices, and the data is broken into packets for sending over the network.

Circuit-switching network

An operating system with _____ capabilities allows a user to run more than one program concurrently.

multitasking

_____ is an open-source operating system whose source code is freely available to everyone.

Linux

Which of the following statements is true of embedded operating systems?

They are dedicated to the control of another device.

_____ is a personal application software that includes a wide range of built-in functions for statistical, financial,

logical, database, graphics, and date and time calculations.

Spreadsheet

In a _____, all network devices are connected to a common linear backbone that serves as a shared

bus-network

_____ operates like Wi-Fi, only over greater distances and at faster transmission speeds.

WiMAX

A _____ is one in which all network devices are connected to one another through a single central device.

star-network

You are storing a new worksheet online for members of your project team to be able to share access to it. What kind of computing is this an example of?

Cloud

You would use this type of Boolean operator to keep certain values out of the search results.

exclusion (-)

Which of the following is a utility that removes a program, as well as any associated entries in the system files?

uninstaller

The technology used to create the Internet is also being applied within companies and organizations to create _____, which allow people in an organization to exchange information and work on projects.

intranet

With _____, processing devices are placed at various remote locations, and each device is isolated and does not

communicate with any other processing device.

decentralized processing

A _____ is a telecommunications hardware device that converts communications signals so they can be transmitted

over the communication media.

modem

What is the purpose of an Internet Protocol address (IP address)?

It uniquely identifies the location of each computer or device connected to the Internet.

A DNS server is able to identify which of the following?

an IP address based on a domain name

What is the difference between a wiki and a blog?

Users can modify posts in a wiki but they cannot modify posts made by a blogger.

What is multimedia?

the combination of text, graphics, animation, audio, video, and/or virtual reality

If someone displays a webpage in a browser and the page indicates Flash Player is needed, what is Flash Player?

a plug-in

One way to help protect the security of communications over both wired and wireless networks is to _____.

encrypt the data

An embedded system is a computer system that is implanted in and dedicated to the control of another device. T/F

True

An advantage of a packet-switching network is that data arrives in exactly the same order in which it is sent. T/F

FALSE

A wide area network WAN is a telecommunications network that connects users and their commuters in a geographical area that spans a campus or city T/F

FALSE

Twisted-pair wire offers cleaner and crisper data transmission (less noise) than coaxial cable and also a higher

data transmission rate. T/F

FALSE

With centralized processing, multiple computer platforms are dedicated to special functions, such as database

management, printing, communications, and program execution. T/F

False

Data transmission speed is measured in bps. (T/F)

TRUE

With distributed processing, processing devices are placed at remote locations but are connected to each other via

a network. T/F

TRUE

A client is any computer on a network that sends messages requesting services from the servers on the network. T/F

TRUE

A half-duplex channel can transmit data in either direction but not both simultaneously. T/F

True

A digital subscriber line (DSL) delivers high-speed Internet access to homes and small businesses over the existing

phone lines of the local telephone network. T/F

TRUE

A utility program is a type of system software that assists users with controlling or maintaining the operation of a computer, its devices, or its software. (T/F)

TRUE

Memory cache helps speed the processes of the computer because it stores frequently used instructions and data. (T/F)

True

Each computer on the Internet has an assigned address, called its Internet Protocol (IP) address, that identifies it

on the Internet. T/F

TRUE

Because microwaves use line-of-sight transmission, microwave stations often sit on the tops of buildings or towers. (T/F)

TRUE

The higher the bandwidth, the more a communications channel transmits. (T/F)

TRUE

The Internet is the infrastructure on which the Web exists. T/F

TRUE

The Transmission Control Protocol (TCP) is responsible for managing IP addresses and Internet domain names. (T/F)

FALSE

(Ensures correct delivery of packets from client to server)

A(n) _____ is a system consisting of software and hardware that protect a computer system or network from

outside attacks.

firewall

_____ is a communications technology used by some outgoing mail servers.

SMTP (simple mail transfer protocol)

_________ is a device that allows multiple data streams to be carried from one place to another over one physical link.

Multiplexer

______ translates and executes only one line of computer source code into binary machine at a time.

interpreter

_____ is a wireless communications specification that describes how cell phones, computers, and printers can be connected over distances of 10 to 30 feet at a rate of about 2 Mbps and allows users of multifunctional devices to synchronize information.

Bluetooth

Using the _____ =SUM(B10:B14) totals the contents of cells B10 through B14 in a worksheet.

FORMULA

_____________________ is the number of individual pixels contained on a display.

Resolution

DNS is _______________________________

Domain Name Service

_______ is the protocol for exchanging files over the Internet.

FTP (is a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet).

Which of the following is a simple, inexpensive network that typically connects fewer than 10 computers?

peer-to-peer

A(n) ______ is a telecommunications device that forwards data packets between computer networks.

gateway

Eight bits together form a(n) _____.

BYTE

_____ transmission involves the broadcast of communications in one of three frequency ranges: microwave, radio, and infrared.

Wireless

Software is loaded into memory (RAM) and executed in the _______.

CPU (Central Processing Unit)

The top-level domain affiliation commonly used to denote nonprofit organizations sites is _____.

ORG

The _____ is the primary method for interaction with the Internet

HTTP

If a program exceeds its allocated space, the operating system uses an area of the hard disk, called ____________ , to store parts of programs or data files until they are needed.

Virtual memory

_________ uses battery power to retain information even when the power to the computer is off.

CMOS

Every client and server on the Internet has a unique identifying number called an ________.

IP Address

A(n) _____ is a website that people can create and use to write about their observations, experiences, and opinions

on a wide range of topics.

blog

Systems analysis involves studying the existing system to uncover its strengths and weaknesses T/F

TRUE

Essay: What are the topologies? Name one

Essay: Provide two examples of websites that use the HTTPS protocol and the types of information transmitted.

Websites where you purchase something or where you input personal information. The information that is transmitted in HTTPS is encrypted

Essay: What is a computer program?

Set of instructions that tell the computer what to do.