CSC 100: Modules 5-8 Answers

True

Any illegal act involving the use of a computer or related devices generally is referred to as a crimewave.

False

A rootkit displays an online advertisement in a banner or pop-up window on webpages, email, or other Internet services.

True

Viruses, worms, and other malware can be hidden in downloaded game files and mobile apps.

True

An audit trail records in a file both successful and unsuccessful access attempts.

True

It is good practice to change your password frequently.

True

Intentionally erasing software would be considered software theft.

True

A typical license agreement allows you to rent or lease the software.

False

Unencrypted, readable data is called ciphertext.

False

Private key encryption is also called asymmetric key encryption.

True

VPNs encrypt data to help ensure that the data is safe from being intercepted by unauthorized people.

True

When data is traveling to or from a computer to a cloud service, it is subject to interception.

True

Full backups are made at regular intervals on removable media in a grandparent-parent-child backup scheme.

access control

security measure that defines who can access a computer, device, or network; when they can access it; and what actions they can take while accessing it

bot

program that performs a repetitive task on a network

cookie

small text file that a web server stores on your computer

digital certificate

notice that guarantees a user or website is legitimate

disc burning software

program that writes text, graphics, audio, and video files on a recordable or rewritable disc

keygen

program that creates software registration numbers and sometimes activation codes

phishing

scam in which a perpetrator sends a message in an attempt to obtain personal or financial information

script kiddie

hacker who does not have the technical skills and knowledge of a cracker

technology ethics

moral guidelines that govern the use of computers, mobile devices, information systems, and related technologies

zombie

compromised computer or device whose owner is unaware

True

The motherboard also is called a system board.

False

A single-board computer often is more expensive than a traditional desktop computer.

False

A dual-core processor doubles the processing speed of a single-core processor.

True

In general, multi-core processors are less energy efficient than separate multiple processors.

False

The system clock keeps track of the date and time in a computer.

True

In cloud computing, the back end consists of the servers and storage devices that manage and store the resources accessed by users.

False

In the binary system, the digit 1 represents the absence of an electronic charge.

False

Most RAM is nonvolatile.

True

The processor interprets and executes a program or application's instructions while the program or application is in nonvolatile memory.

True

ROM chips also are called firmware.

True

As with processors, manufacturers state the clock speed for a bus in hertz.

True

The power supply converts the wall outlet AC power into DC power.

ASCII

widely used coding scheme to represent a set of characters

bus width

number of bits the processor can interpret and execute at a given time

chip

small piece of semiconducting materials, usually silicon, on which integrated circuits are etched

control unit

component of the computer that directs and coordinates most of the operations in the computer

firmware

ROM chips that contain permanently written data, instructions, or information

IaaS

the use of software to emulate hardware capabilities, enabling computers to scale, or adjust up or down, storage, processing power, or bandwidth as needed

motherboard

the main circuit board of the computer

registers

small, high-speed storage locations contained in a processor

transistor

integrated circuit component that acts as an electronic switch that opens or closes the circuit for electrical charges

word size

determines the number of bits that the computer can transmit at one time

True

CAPS LOCK and NUM LOCK are two examples of toggle keys.

True

Keylogging software runs undetected and stores every keystroke in a file for later retrieval.

True

Wearable devices mainly rely upon touch input.

False

A smaller frame rate results in a smaller file size for a video, as well as a smoother playback.

False

Optical character recognition (OCR) and optical mark recognition (OMR) are two technologies used by QR code readers.

False

A magstripe reader reads the preprinted characters on the bottom of a check.

True

LCD stands for liquid crystal display.

True

In terms of response time, the lower the number, the faster the response time.

False

Contrast ratio defines a display's width relative to its height.

False

A 3-D printer creates an object by using ink cartridges.

False

Printer resolution is measured by the number of pixels per inch a printer can print.

True

A dye-sublimation printer uses heat to transfer colored dye to specially coated paper.

command

instruction that causes a program or app to perform a specific action

drone

aircraft that operates by an onboard computer and GPS, a remote control device, and/or an app on a computer or mobile device

headset

device that functions as both headphones and a microphone

interactive whiteboard

touch-sensitive device that displays the image on a connected computer screen, usually via projector

keyboard shortcut

one or more keyboard keys that you press to perform an operating system or application-related task

multi-touch

touch screen capability of recognizing more than one point of contact at the same time

scanner

light-sensing input device that reads printed text and graphics and then translates the result into a form the computer can process

stylus

small metal or plastic device that looks like a tiny ink pen but uses pressure instead of ink

touchpad

small, flat, rectangular pointing device that is sensitive to pressure and motion

voice recognition

computer or mobile device's capability of distinguishing spoken word

False

Storage devices can be categorized as input or output devices.

True

A storage medium is volatile; that is, items stored on it remain intact even when you turn off a computer or mobile device.

True

Compared with the access time of memory, the access time of storage devices is slow.

False

On storage media, a higher density means less storage capacity.

False

Because of current standards, head crashes no longer occur.

False

The access time of a hard disk can be more than 100 times faster than an SSD.

False

While encrypted files offer greater security than unencrypted files, an operating system may require more time to open and access encrypted files.

True

While each program may use a different method of encrypting files, they all use the process of cryptography.

True

A group of two or more integrated hard drives is called a RAID.

True

When you are finishing a USB flash drive, simply remove it from the USB port.

True

Mini discs require a separate mini disc drive; that is, they do not work in standard-sized optical disc drives.

False

An active RFID tag contains a battery that runs the chip's circuitry and broadcasts a signal to the RFID reader; because they are so small, they can be embedded in skin.

capacity

the number of bytes a storage medium can hold

controller

special-purpose chip and electronic circuits that control the transfer of data, instructions, and information from a drive to and from the system bus and other components in the computer

longitudinal recording

storage method in which the magnetic particles are aligned horizontally around a disk's surface

network attached storage

server whose sole purpose is providing storage to users, computers, and devices attached to the network

reading

process of transferring data, instructions, and information from a storage medium into memory

ripping

process of copying audio and/or video data from a purchased disc and saving it on your own media

sequential access

storage technique that reads or writes data consecutively

solid-state media

flash memory chip type that consists entirely of electronic components, such as integrated circuits, and contains no moving parts

thumb drive

flash memory storage device that plugs in a USB port on a computer or mobile device

writing

process of transferring data, instructions, and information from memory to a storage medium