41. A technique used by codes to convert an analog signal into a digital bit stream is known as-
a.
b.
c.
d.

Option “B” is correct.
The most common technique to change an analog signal to digital data is called pulse code modulation (PCM). A technique used by codes to convert an analog signal into a digital bit stream is known as Pulse code modulation.
42. An optical input device that interprets pencil marks on paper media is-
a.
b.
c.
d.

Option “D” is correct.
Optical mark recognition (also called optical mark reading and OMR) is the process of capturing human-marked data from document forms such as surveys and tests.
43. A program that converts computer data into some code system other than the normal one is known as-
a. Emulator
b. Encoder
c. Decoder
d. Trigger

Option “B” is correct.
A program that converts computer data into some code system other than the normal one is known as encoder. Encoder is used for the same purpose (means to convert information to machine code) and Decoder is just opposite of encoder.
44. What does DRAM stand for?
a.
b.
c.
d.

Option “C” is correct.
Dynamic random-access memory (DRAM) is a type of random access semiconductor memory that stores each bit of data in a separate tiny capacitor within an integrated circuit.
45. What is Cache RAM?
a.
b.
c.
d.

Option “D” is correct.
Memory caching is a technique in which computer applications temporarily store data in a computer’s main memory to enable fast retrievals of that data. The RAM that is used for the temporary storage is known as the cache.
46. What does a system bus do?
a.
b.
c.
d.

Option “C” is correct.
A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent, and a control bus to determine its operation.
47. Which company is not a PC manufacturer?
a. Intel
b. Gateway
c. Dell
d. Compaq

Option “A” is correct.
Intel is not PC manufacturer. Intel in full Intel Corporation, American manufacturer of semiconductor computer circuits. It is headquartered in Santa Clara, California. The company’s name comes from “integrated electronics.”
48. LAN stands for?
a.
b.
c.
d.

Option “D” is correct.
A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.
49. What language does a browser typically interpret to display information from the World Wide Web?
a.
b.
c. HTML
d.

Option “C” is correct.
Hypertext Markup Language (HTML) is the standard markup language for creating web pages and web applications. With Cascading Style Sheets (CSS) and JavaScript, it forms a triad of cornerstone technologies for the World Wide Web.
50. A wireless technology built in electronic gadgets used for exchanging data over short distances is ______
a. USB
b. Bluetooth
c. Modem
d. Wifi

Option “B” is correct.
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs). Invented by Dutch electrical engineer Jaap Haartsen, working for telecom vendor Ericsson in 1994.
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