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A wide range of topics in computer fundamentals and information technology, including computer hardware, software, networking, security, and emerging technologies. It provides a comprehensive overview of the key concepts and principles in these areas, with a focus on practical applications and real-world examples. Suitable for students, professionals, and lifelong learners who want to deepen their understanding of the rapidly evolving field of information technology. It covers topics such as computer architecture, operating systems, programming languages, database management, cybersecurity, and the impact of technology on society. Structured in a clear and concise manner, making it an excellent resource for self-study, classroom instruction, or as a reference guide.
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_______ is a system of safeguards for protecting information technology against disasters, system failures, and unauthorized access. A. WAP B. File sharing C. Security D. DDoS - ANSWER-C. Security A ________ is a fixed-length block of data for transmission. A. node B. protocol C. packet D. backbone - ANSWER-C. packet A ________ is a system of interconnected computers, telephones, or communications devices that can communicate and share resources. A. terminal B. router C. network D. server - ANSWER-C. network A __________ is a named collection of data or a program that exists in a computer's secondary storage. A. utility B. driver C. buffer D. file - ANSWER-D. file A byte represents ________ A. 1 character B. 8 characters C. 16 characters D. 32 characters - ANSWER-A. 1 character A circuit is a closed path followed or capable of being followed by an electric current. TRUE FALSE - ANSWER-TRUE
A computer crime can be an illegal act perpetrated against computers/telecommunications, or it can be the use of computers/telecommunications to accomplish an illegal act. TRUE FALSE - ANSWER-TRUE A file (table) is a collection of related ________. A. characters B. tables C. fields D. records - ANSWER-C. fields A microprocessor contains the miniaturized circuitry of a computer processor. TRUE FALSE - ANSWER-TRUE A network that covers a wide geographical area is called a ________. A. LAN B. WAN C. MAN D. HAN - ANSWER-B. WAN A network that operates without relying on a server is the ________ network. A. peer-to-peer B. client/server C. host-to-host D. master/slave - ANSWER-A. peer-to-peer A record (row) is a collection of related ________. A. characters B. tables C. fields D. files - ANSWER-C. fields A rollover feature provides a small box explaining an icon's function when the mouse pointer is rolled over the icon. TRUE FALSE - ANSWER-TRUE A software bug is an error in a program that causes it not to work properly. TRUE FALSE - ANSWER-TRUE
Application software is a basic component of system software used to support, enhance, or expand existing programs. TRUE FALSE - ANSWER-FALSE Backup, data recovery, virus protection, disk cleanup, and data compression are utility TRUE FALSE - ANSWER-TRUE Because of the excellence of satellite technology, GPS location IDs are 100% accurate. TRUE FALSE - ANSWER-FALSE Cellphones are basically two-way radios. TRUE FALSE - ANSWER-TRUE Cloud storage is ________ storage. A. online B. volatile C. primary D. ROM - ANSWER-A. online Computer keyboards have special-purpose keys that are used to enter, delete, and edit data and to execute commands. TRUE FALSE - ANSWER-TRUE Data that is displayed on a screen or stored on a disk is called a hard copy. TRUE FALSE - ANSWER-FALSE DOS is a legacy system. TRUE FALSE - ANSWER-TRUE Each zero and one signal represents a ________. A. bit B. byte C. kilobyte D. megabyte - ANSWER-A. bit Electrical data roadways through which bits are transmitted within the CPU and other components of the motherboard are called _________.
A. cables B. buses C. ports D. signals - ANSWER-B. buses Ergonomics involves the relationship between workers and their environments, including workers' health. TRUE FALSE - ANSWER-TRUE Ethernet is a long-distance wireless communications connection. TRUE FALSE - ANSWER-FALSE Impact printers are the only desktop printers that can use multilayered forms to print many copies at once. TRUE FALSE - ANSWER-TRUE In 2009 a cracker stole more than 500,000 patient records from a state-run database and demanded ransom for the return of the records. This crime is called ________. A. theftoftimeandservices B. dirty-data entry C. theft of software D. theft of information - ANSWER-D. theft of information In a network, communications protocols specify the type of electrical connections, the timing of message exchanges, and error-detection techniques. TRUE FALSE - ANSWER-TRUE In the ________ network topology, communications devices are connected to a single cable with two endpoints. A. ring B. bus C. star D. peer-to-peer - ANSWER-B. bus Information technology includes technologies that measure and analyze human body characteristics for the purpose of maintaining security. TRUE FALSE - ANSWER-TRUE
Sending emails that appear to come from a trusted source, which direct you to a website where you're asked to reveal personal information is called _________. A. theftoftimeandservices B. Evil Twin attack C. phishing D. pharming - ANSWER-C. phishing Small pictures that are used with GUIs to represent programs, data files, or procedures are called __________. A. icons B. menus C. desktops D. frames - ANSWER-A. icons Software obtained illegally is called open-source software. TRUE FALSE - ANSWER-FALSE Software that allows the application software to interact with the computer is called
A. devicedriver B. application software C. system software D. utility program - ANSWER-C. system software The ________ is a device that converts digital computer signals into analog signals so that they can be sent over a telephone line. A. printer B. scanner C. modem D. digitizer - ANSWER-C. modem The ________ uniquely identifies a record. A. mainfield B. primary field C. high field D. key field - ANSWER-D. key field The basic operations of a computer are managed by the __________. A. operating system
B. device drivers C. utility programs D. application software - ANSWER-A. operating system The binary code widely used with microcomputers is EBCDIC. FALSE TRUE - ANSWER-FALSE The operating systems used in small or specialized devices, such as mobile phones, are called open-source systems. FALSE TRUE - ANSWER-FALSE The tiny piece of silicon that houses millions of microminiature electronic circuits is called a __________. A. conductor B. chip C. unit D. transistor - ANSWER-B. chip The two digits used in the binary system are __________. A. 0 and- B. 0 and 1 C. 1 and 2 D. -1 and 1 - ANSWER-B. 0 and 1 The two general classes of bandwidth are long and short. TRUE FALSE - ANSWER-FALSE Thermal printers are often used to print cash register receipts. TRUE FALSE - ANSWER-TRUE To create larger networks, a bridge connects the same types of networks, and a ________ connects dissimilar networks. A. router B. gateway C. hub D. host - ANSWER-B. gateway Unicode uses 2 bytes for each character, rather than 1 byte; ASCII uses 1 byte.
What form of wireless transmission sends data to an AM or FM receiver? A. broadcast radio B. infrared radio C. GPS D. microwave radio - ANSWER-A. broadcast radio What is the software that controls the structure of a database and access to the data? A. personal information manager B. database management system C. project management D. network operating system - ANSWER-B. database management system What kind of computer is a touchpad most often used for? A. PC B. laptop C. mainframe D. workstation - ANSWER-B. laptop What kind of topology (layout) is used by a network that connects all its computers and communications devices to a central server? A. ring B. bus C. star D. peer-to-peer - ANSWER-C. star What set of rules is used to link nearly all mobile devices to a telecommunications carrier's wireless network and content providers? A. LAN B. WAN C. WAP D. HAN - ANSWER-C. WAP What short-distance wireless standard is used to link cell phones, computers, and peripherals at distances of up to about 33 feet? A. Bluetooth B. Wi-Fi C. HomeRF D. WISP - ANSWER-A. Bluetooth
What wired communications medium consists of dozens or hundreds of thin strands of glass plastic? A. twisted-pair B. coaxial C. fiber-optic D. straight wire - ANSWER-C. fiber-optic When people at work play online games or do online shopping on their employer's time, this is called theft of information. TRUE FALSE - ANSWER-FALSE Which device uses light-sensing (optical) equipment to convert images of text, drawings, and photos into digital form? A. lightpen B. scanner C. digitizer D. pointing stick - ANSWER-B. scanner Which of the following is NOT a function of the U.S. Computer Emergency Response Team (CERT)? A.Counseling the party under attack. B.Helping to thwart the intruder. C.Evaluating the system afterward against future break-ins. D. Prosecuting those caught. - ANSWER-D. Prosecuting those caught. Which of the following is NOT a method in which a security system tries to authenticate a user's identity? A. Whatyouhave—cards,keys,signatures,badges B. What you need—the kind of information you are asking for C. Who you are—physical traits, or biometrics D. What you know—PINs, passwords, and digital signatures - ANSWER-B. What you need—the kind of information you are asking for Which of the following is NOT an input device? A. lightpen B. webcam C. scanner D. monitor - ANSWER-D. monitor
A. touchpad B. mouse C. stylus D. joy stick - ANSWER-B. mouse Which port is used to transmit slow data over long distances? A. serial B. parallel C. USB D. SCSI - ANSWER-A. serial Wi-Fi connections are always secure; no one can steal your data when you are online. TRUE FALSE - ANSWER-FALSE