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Exercise:

Section 1

Section 2

► Section 3

Section 4

01. The first graphical browser for the WWW was named:
A. Netscape B. Veronica
C. Mosaic D. Explorer

Answer and Explanation

Answer: Mosaic

Explanation:
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02. What are three types of lasers?
A. Gas, metal vapor, rock B. Pointer, diode, CD
C. Diode, inverted, pointer D. Gas, solid state, diode

Answer and Explanation

Answer: Gas, solid state, diode

Explanation:
The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.

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03. What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
A. URL (Universal Resource Locator) B. LAN (Local Area Network)
C. WAN (Wide Area Network) D. World Wide Web

Answer and Explanation

Answer: WAN (Wide Area Network)

Explanation:
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04. '.INI' extension refers usually to what kind of file?
A. Image file B. System file
C. Hypertext related file D. Image Color Matching Profile file

Answer and Explanation

Answer: System file

Explanation:
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05. What is not always necessary for accessing the Web?
A. A Web browser B. A connection to an Internet Access Provider
C. A computer D. A modem

Answer and Explanation

Answer: A modem

Explanation:
You need a browser, online access and a computer to surf the Web, but if you're on a local area network (LAN) that's connected to the Internet, you don't need a modem to go online.

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06. What does the abbreviation "http" stand for?
A. Hypertext Transfer Protocol B. High Task Termination Procedure
C. Harvard Teletext Proof D. Hindustan Times Technical Proffesionals

Answer and Explanation

Answer: Hypertext Transfer Protocol

Explanation:
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07. What is a MAC?
A. A Computer made by Apple B. Memory Address Corruption
C. Mediocre Apple Computer D. Media Access Control

Answer and Explanation

Answer: Media Access Control

Explanation:
MAC is short for Media Access Control address, an address unique to every piece of network hardware.

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08. '.JPG' extension refers usually to what kind of file?
A. System file B. Animation/movie file
C. MS Encarta document D. Image file

Answer and Explanation

Answer: Image file

Explanation:
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09. A program that neither replicates or copies itself, but does damage or compromises the security of the computer. Which 'Computer Virus' it is?
A. Joke Program B. Worm
C. Trojan D. Hoax

Answer and Explanation

Answer: Trojan

Explanation:
Typically it relies on someone emailing it to you, it does not email itself, it may arrive in the form of a joke program or software of some sort.

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10. Which is a type of Electrically-Erasable Programmable Read-Only Memory?
A. Flash B. Flange
C. Fury D. FRAM

Answer and Explanation

Answer: Flash

Explanation:
It's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.

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11. After the first photons of light are produced, which process is responsible for amplification of the light?
A. Blackbody radiation B. Stimulated emission
C. Planck's radiation D. Einstein oscillation

Answer and Explanation

Answer: Stimulated emission

Explanation:
The word "laser" is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.

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12. What is a URL?
A. A computer software program B. A type of UFO
C. The address of a document or "page" on the World Wide Web D. An acronym for Uniform Resources Learning

Answer and Explanation

Answer: The address of a document or "page" on the World Wide Web

Explanation:
URL stands for Uniform Resource Locator. It is an address for a specific document found on the Web.

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13. In what year did the Symantec Corporation first release Norton Antivirus?
A. 1990 B. 1995
C. 1988 D. 1997

Answer and Explanation

Answer: 1990

Explanation:
1990 Symantec launches Norton AntiVirus, one of the first anti-virus programs developed by a large company.

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14. Who co-created the UNIX operating system in 1969 with Dennis Ritchie?
A. Bjarne Stroustrup B. Steve Wozniak
C. Ken Thompson D. Niklaus Wirth

Answer and Explanation

Answer: Ken Thompson

Explanation:
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15. '.MOV' extension refers usually to what kind of file?
A. Image file B. Animation/movie file
C. Audio file D. MS Office document

Answer and Explanation

Answer: Animation/movie file

Explanation:
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16. Pretty Good Privacy is created by:
A. Ken Thompson. B. Marc Andreessen.
C. Tim Berners-Lee. D. Phil Zimmermann.

Answer and Explanation

Answer: Phil Zimmermann.

Explanation:
There is no explanation...

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17. What is RISC?
A. Remodeled Interface System Computer B. Remote Intranet Secured Connection
C. Runtime Instruction Set Compiler D. Reduced Instruction Set Computer

Answer and Explanation

Answer: Reduced Instruction Set Computer

Explanation:
Reduced Instruction Set Computer - a type of microprocessor that relies on simple instructions which can be used to build more complicated ones.

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18. Who was the founder of Hotmail?
A. Shawn Fanning. B. Ada Byron Lovelace.
C. Sabeer Bhatia. D. Ray Tomlinson.

Answer and Explanation

Answer: Sabeer Bhatia.

Explanation:
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19. What do we call a collection of two or more computers that are located within a limited distance of each other and that are connected to each other directly or indirectly?
A. Inernet B. Interanet
C. Local Area Network D. Wide Area Network

Answer and Explanation

Answer: Local Area Network

Explanation:
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20. What frequency range is the High Frequency band?
A. 100 kHz B. 1 GHz
C. 30 to 300 MHz D. 3 to 30 MHz

Answer and Explanation

Answer: 3 to 30 MHz

Explanation:
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