Computer Knowledge
1. A ____________ is a wireless computing device characterized by low power consumption and low cost.
(1) Bluetooth adapter
(2) tablet PC
(3) paging device
(4) cell phone
(5) None of these
Ans. (3) Paging devices is a wireless computing device characterized by low power consumption and low cost.
2. Short Message Service is transmitted using ______.
(1) Radio waves
(2) Cell phone networks
(3) File synchronization
(4) Peer-to-peer files sharing
(5) None of these
Ans. (2) Short Message Service is transmitted using Cell phone networks.
3. Web clipping is a ______.
(1) Language for micro browsing.
(2) Network standard for wireless transmission media.
(3) Technology for obtaining a subset of Web content, eliminating unnecessary graphics and links.
(4) Protocol for wireless Internet access.
(5) Topology for wired network
Ans. (3) Technology for obtaining a subset of Web content, eliminating unnecessary graphics and links.
4. The electronic switches in the ENIAC were _______.
(1) integrated circuits
(2) transistors
(3) electro-mechanical switches
(4) vacuum tubes
(5) None of these
Ans. (4) The electronic switches in the ENIAC were vacuum tubes.
5. Transistors are an improvement over vacuum tubes because transistors:
(1) are smaller
(2) generate more heat.
(3) don't require silicon.
(4) can represent more than two values.
(5) None of these
Ans. (1) Transistors are an improvement over vacuum tubes because transistors are smaller.
6. Which of the following is NOT found on an integrated circuit?
(1) Diodes
(2) Motherboard
(3) Capacitors
(4) Transistors
(5) None of these
Ans. (2) Motherboard is NOT found on an integrated circuit.
7. The binary number 101010 translates into the decimal number:
(1) 42
(2) 256
(3) 101,010
(4) 65,536
(5) 45
Ans. (1) The binary number 101010 translates into the decimal number 42.
8. Which of the following statements is NOT true about binary numbers?
(1) Binary numbers are used to represent all data stored in a computer.
(2) Binary numbers use the base 2 number system.
(3) Base 10 numbers can be converted to binary numbers by multiplying each digit by 2.
(4) Binary number conversion can be done using a scientific calculator.
(5) None of these
Ans. (3) Base 10 numbers can be converted to binary numbers by multiplying each digit by 2.
9. The hexadecimal number system ____.
(1) is used to indicate negative numbers.
(2) determines how fractions are displayed.
(3) is represented by 32 bits.
(4) uses both numbers and letters
(5) None of these
Ans. (4) The hexadecimal number system uses both numbers and letters.
10. ASCII is a(n) _____.
(1) numbering system for representing numbers with decimals.
(2) character representation standard common in older mainframe computers.
(3) encoding standard used to represent letters and characters.
(4) symbolic programming language that directly represents machine instructions.
(5) None of these
Ans. (3) Encoding standard used to represent letters and characters.
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