Question Bank
Computer Science Paper –I Fundamentals of Computer & Computer Organization and Architecture.
UG-CS 101
Multiple Choice : 160
Objective :182
2 Mark Questions : 223
4 Mark Questions : 200
6 Mark Questions : 116
Question 1 Multiple Choice1) The access method used for magnetic tape is_________
a) Direct b) Random c) Sequential d) None of the above
2) By Processing we understand _______________
a) Processing string of only words b) None of the above c) String manipulation only d) Processing string of numbers and special symbols
3) The difference between memory and storage is that the memory is__________ and storage is_________
a) Temporary, permanent b) Permanent, temporary c) Slow, fast d) None of the above
4) Which of the Following holds the ROM, CPU, RAM and expansion cards
a) Hard disk b) Floppy disk c) Mother board d) None of the above
5) The language that the computer can understand and execute is called ______
a) Machine language b) Application software c) System program d) None of the above
6) Which of the following devices can be used to directly input printed text
a) OCR b) OMR c) MICR d) None of the above
7) A floppy disk contains
a) Circular tracks only b) Sectors only c) Both circular tracks and sectors d) None of the above
8) CD-ROM is a
a) Semiconductor memory b) Memory register c) Magnetic memory d) None of the above
9) Actual execution of instructions in a computer takes place in
a) ALU b) Control Unit c) Storage unit d) None of the above
10) Which of the following is used as a primary storage device
a) Magnetic tape b) PROM c) Floppy disk d) None of the above
11) Information retrieval is faster from
a) Floppy disk b) Magnetic tape c) Hard disk d) None of the above
12) Operating system is
a) A collection of hardware components c) A collection of software routines
b) A collection of input-output devices d) none of the above
13) Operating system
a) Link a program with the subroutines it references
b) Provides a layered, user-friendly interface
c) Enables a programmer to draw a flowchart
d) None of the above
14) Execution of two or more programs by a single CPU is known as :
a) Multiprocessing b) Time sharing c) Multiprogramming d) None of the above
15) Modem stands for
a) A type of secondary memory b) Modulator demodulator
c) Mainframe operating device memory d) None of the above
16) Typical data transfer rate in LAN are of the order of
(a) Bits per sec (b) Kilo bits per sec (c) Mega bits per sec (d) None of the above
17) Ethernet uses
(a) Bus topology (b) Ring topology (c) Mesh topology (d) None of the above
18) Wide area networks (WANs) always require
(a) High bandwidth communication source link (b) High speed processors (c) Same type (d) None of the above
19) Typical bandwidth of optical fibers is
(a) Order of GHz (b) Order of KHz (c) Order of Hz (d) None of the above
20) A large number of computers in a wide geographical area can be efficiently
connected by
(a) Twisted pair lines (b) Coaxial cables (c) Communications satellites (d) None of the above
21) Which of the following topologies is not of broadcast type ?
(a) Star (b) Bus (c) Ring (d) None of the above 22) Bug means
(a) A logical error in a program (b) Documenting programs using an efficient
Documentation too (c) A difficult syntax error in a program (d) None of the above
23) The part of machine level instruction, which tells the central processor what was to be Done is
(a) Operation code (b) Address (c) Operand (d) None of the above
24)Indicate which , of the following is not true about 4GL.
a)4GL does not support a high –level of screen interaction
b)Many database management system packages support 4GLs
c)A 4GL is a software tool which is written, possibly, in some third generation language
d)None of the above
25) Indicate which of the following, best describes the term “software”
a)Systems programs only b)Application programs only c)Both (a) and (b) d)None of the above
26) A translator is best described as
a) An Application software b) A system software c) A hardware component d)None of the above
27) Indicate which of the following is not true about an interpreter
a)Interpreter generates an object program from the source program b) Interpreter is a kind of translator
c) Interpreter analyses each source statement every time it is to be executed d) None of the above
28) The errors that can be pointed out by the compiler are
a)Syntax errors b)Semantic errors c)Logical errors d)None of the above
29) C is
a) An assembly language b) A third generation high level language c) A machine language d)None of the above
30) A graph preapared by a computer
a) is its output b) is the piece of information to use c)is a hard copy d) all of the above
31)Which of the following does not represent on I/O device
a) speaker which beeps b) joystick c) plotter d)ALU
32)The communication line between the CPU, memory and peripherals is called a
a)Bus b) line c)media d) none of these
33)Memories which can be read only are called………….. memories
a)RAM b)ROM(read only memory) c)PROM d)EPROM
34)Example of non-numerical data is
a) Employee address b) Examination score c)Bank balance d)None of the above
35)One thousand bytes represent a
a)Megabyte b)Gigabyte c)Kilobyte d)None of the above
36)The language that the computer can understand and execute is called
a)Machine language b)Application software c)System program d)None of the above
37)A step by step procedure used to solve a problem is called
a)Operating system b)Algorithm c)Application Program d)None of the above
38)Which of the following holds the ROM, CPU, RAM and expansion cards
a)Hard disk b)Cache memory c)Mother board d)None of the above
39)The errors that can be pointed out by the compiler are
a)Syntax errors b)Semantic errors c)Logical errors d)None of the above
40)A computer cannot “boot” if it does not have the
a)Compiler b)Loader c)Operating system d)Assembler
41)WAN hardware includes
a)Multiplexors and routers b)EDF c)Bridger and modems d)None of the above
42)Third generation computers
a)Were the first to use built-in error detecting device
b)Used transistors instead of vaccum tubes
c)Were the first to use neural network
d)None of the above
43)A Winchester disk is a
a)Disk stack b)Removable disk c)Flexible disk d)None of the above
44) A computer can be defined as an electronic device that can be(choose the most precise definition):
a) carry out arithmetical operation b) carry out logical function
c) accept and process data using a set of stored instructions
d) present information on a VDU
45) The Central Processing Unit:
a) is operated from the control panel. b) is controlled by the input data entering the system
c) controls the auxiliary storage unit d) controls all input, output and processing.
46) Computer follows a simple principle called GIGO which means:
a)garbage input good output b) garbage in garbage out
c) great instructions great output d) good input good output.
47) The term ‘baud’ is a measure of the:
a) speed at which data travels over the communication line
b) memory capacity
c) instruction execution time
d) all of the above
48) A bootstrap is:
a) a memory device b) a device to support the computer
c) a small initialisation program to start up a computer
d) an error correction technique
49) Which of the following is not hardware:
a) Magnetic tape b) Printer c) VDU terminal d) Assembler
50) Pick out the wrong definition :
a) Access time – time needed to access the output
b) EDP- acronym for Electronic Data Processing
c) COBOL – a language used for business data processing
d) Control unit – heart of a computer.
51) Terminal is a:
a) device to give power supply to computer
b) point at which data enters or leaves the computer
c) the last instruction in a program
d) any input /output device.
52) Multiple choice examination answer sheets can be evaluated automically by
a) Optical Mark Reader b)Optical Character Reader c) Magnetic tape reader e) Magnetic ink character reader.
53) An operating system
a) is not required on large computers b) is always supplied with the copmuter
c) is always supplied with the BASIC
e) consists of programs that help in the operation of computer.
54)Which of the following would cause quickest acess
a) direct access from a magnetic tape
b) direct access from a hard disk
c) direct access from a floppy disk
d) direct access from a cassette tape
55) The process of retaining data for future use is called
a) reading b)writing c)storing d)coding
55)A file is corrected immediately after the input of a transaction.This is an example of
a) sorting b)batching c)on-line updating d) off-line updating
56)Magnetic tapes are good storage media for
a) backup and low volume data
b)backup and high volume data
c)storing original but low volume data
d)storing original but high volume data
57)Which of the following is a computercode
a) EPROM b) JAVA c) EBCDIC d)None of the above
58)Data is generally coded in 8-bit units, such a unit is also called
a) k b) Word c)field d)byte
59) Half adder is logic CKT that adds. ………Digit at a time
a) Two b) one c) three d) zero
60) Half adder consist of. ……&…..Gates
a) EX-OR&AND b) EX-OR&OR c) EX-OR&NOT d) None of this
61)In half adder EX-OR gate O/P is …………
a) Carry b) Remainder c) Sum d) Non of this
62)In half adder AND gate O/P is …………
a) Carry b) Reminder c) Sum d) Non of this
63)Subtract ( 1010)2 from ( 1101 )2 using 1st complement..
a)(1100)2 b)(0011)2 c)(1001)2 d)(0101)2
64)Using 2’s Complement, subtraction, of (1010)2 from (0011)2 is
a) (0111)2 b) (1001)2 c) –(0111)2 d) –(1001)2
65)In 1st Complement a number to be subtracted is known as………
a) Subtrahend b) Minuend c) carry d) none of thi
66)In 1st Complement a number which is Subtracted from other number Is known as……….
a) Carry b) subtrahend c) minuend d) Non of this
67)In a 2nd Complement a number which is subtracted from other Number is known as………..
a) Carry b) Subtrahend c) Minuend d) Non of this
68)In 2nd Complement a number which is subtracted from other number Is known as………….
a) Carry b) Subtrahend c) Minuend d) Non of this
69)The full adder CKT adds. ………Digit at a time
a) 1 b) 2 c) 3 d) 4
70)Full adder is constructed by using …………….
a) Two Half Adder& one OR gate b) two OR gate &one HA
c) One HA & two OR gate d) One OR gate & one HA
71)HA gives……………. O/P
a) 1 b) 2 c) 3 d) non of this
72)FA gives……….. O/P
a) 1 b) 2 c) 3 d) non of this
73) The O/P of Half adder is in the form of.
a) Sum b) carry c) sum & carry d) none of these
74)The O/P of Full adder is in the form of …………
a) Sum b) carry c) sum & carry d) none of these
75)……….Are used for converting one type of number system in to other form.
a) Encoder b) logic gate c) half adder d) FA
76)……… Are used for converting one type of number system in to the other form
a) Decoder b) logic gate c) half adder d) Full adder
77)Multiplexer means …………………………
a) One in to many b) many in to one c) many in to many d) none of these
78)Multiplexers is also known as.
b) mux b) demux c) adder d) subtractor
79)ASCII code is a ……… bit code.
a) 1 b) 2 c) 7 d) 8
80)8421 codes is also called as.
a) Gray code b) ASCII code c) excess 3-code d) BCD code
81)The decimal number is converted in to excess 3 codes by adding. to each decimal digit.
a) 4 b) 8 c) 2 d) 3
82)The binary system, 1+1=…………
(a) 2 (b) 0 (c) 1 (d) none of these
83)110+110=…………
(a) 2 (b) 0 (c) 1 (d) none of these
84) 12+12=………..
(a) 2 (b) 0 (c) 1 (d) none of these
85) The digital system usually operated on ………system.
(a) binary (b) decimal (c)octal (d) hexadecimal
86) The binary system use powers of……….for positional values.
(a) 2 (b)10 (c) 8 (d)16
87) After counting 0, 1, 10, 11, the next binary number is
(a) 12 (b) 100 (c)101 (d) 110
88) The 2’s complement of 10002 is
(a)0111 (b)0101 (c) 1000 (d)0001
89) The chief reason why digital computers use complemental subtraction is that is
(a) simplifies their circuitry (b) is a very simple process
(c) can handle negative numbers easily (d) avoids direct substraction
90) In logic algebra, variables can assume only two values:either……….or 1.
(a) 2 (b) 0 (c) 3 (d) 4
91) The………. gate is also called any-or-all gate.
(a) OR (b) AND (c) NOT (d) EX-OR
92) In a 2-input OR gate, output is 0 if and only if ……….input are 0.
93) A logic gate is an electronic circuit which
(a) makes logic decisions (b) allows electron flow only in one direction
(c) works on binary algebra (d) alternates between 0&1 values
94) In positive logic, logic gate 1 corresponds to
(a) positive voltage (b) higher voltage level
(c) zero voltage level (d) lower voltage level
95) In negative logic, the logic state 1 corresponds to
(a) negative logic (b) zero voltage
(c) more negative voltage (d) lower voltage level
96) The output of a 2-input OR the gate is 0 only when it’s
(a) both inputs are 0 (b) either input is 1
(c) both inputs are 1 (d) either input is 0
97) An X-OR gate produces an output only when it’s two inputs are
(a) high (b) low (c) different (d) same
98) An AND gate
(a) implements logic addition (b) is equivalent to a series switching circuit
(c) is an any-or-all gate (d)is equivalent to a parallel switching circuit
99) When an input electrical signal A=10100 is applied to a NOT gate, it’s output Signal is
(a) 01011 (b) 10101 (c) 10100 (d)00101
100) The only function of a NOT gate is to
(a) stop a signal (b) recomplement a signal (c) invert an input signal (d) act as a universal set
101) A NOR gate is ON only when all it’s inputs are
(a) ON (b) positive (c) high (d) OFF
102) The truth table as shown in fig. Is for a/an …… gate.
A B C
0 0 0
0 1 1
1 0 1
1 1 1
(a) XNOR (b) OR (c) AND (d) NAND (e) XOR
103) For getting an output from an XNOR gate, its both inputs must be
(a) high (b) low (c) at the same logic level (d) at the apposite logic level
104) Karnaugh map (K-map) technique provides a systematic method for simplifying -----------
a) multiplexers b) lgic gates c) Boolean expressions d) none of these .
105) K-map technique generally used up to --------Variables
a) 2 b) 8 c) 7 d) 6 .
111)In K-map a quad is group of --------- 1’s
a) 2 b) 6 c) 4 d) 8
112) A octal is group of -------1’s
a) 2 b) 6 c) 4 d) 8
113) K –map for Half adder is of ---------- Variables
a)2 b) 3 c) 4 d) None of these
114)K-map for Full adder is of ----------- Variables
a) 2 b) 3 c) 4 d) None of these
115) A Register is a group of ---------
a) OR gates b)OR & AND gate c)Flip-flops d)None of these
116) Each Flip-flop stores ---------- bits
a) 1 bit B) 8 bit c) 16 bit d)2 bit
117)This is truth table for ---------- gate
A B Y
0 0 0
0 1 1
1 0 1
1 1 0
a)OR gate b)AND gate
c)NAND gate d)EX-OR gate
118)This is truth table for ------------- gate
A B Y
0 0 0
0 1 0
1 0 0
1 1 1
B
B
Ā 0 1
A 0 1
a)OR gate b)AND gate
c)NAND gate d)EX-OR gate
118) This is truth table for ------------- gate
A B Y
0 0 1
0 1 1
1 0 1
1 1 0
a)OR gate b)AND c)NAND gate d)NOR
119) In Boolean algebra , A+ A= -----------
a)A b)1 c)0 d)None of these
120) In Boolean algebra , A . A=-----------
a) A2 b) A c)2A d)1
121) In Boolean algebra A+ AB =-----------
a) B b) A c)AB d)A+B
122)The First Microprocessor was__________
a) Intel 4004 b) 8080 c) 8085 d) 4008
123)8085 was introduced in __________
a) 1971 b) 1976 c) 1972 d) 1978
124)In 1978 Intel introduced the 16 bit Microprocessor 8086 now called as________
a) M6 800 b) APX 80 c) Zylog z8000 d) Intel 8086
125)Which is a 8 bit Microprocessor __________
a) Intel 4040 b) Pentium – I c) 8088 d) Motorala MC-6801
126)Pentium-I, Pentium-II, Pentium-III and Pentium-IV are recently introduced
microprocessor by__________
a) Motorala b) Intel c) Stephen Mors d) None
127)The address bus flow in __________
a) bidirection b) unidirection c) Mulidirection d) Circular
128)Status register is also called as ___________
a) Accumulator b) Stack c) Counter d) flags
129)The 8085 is based in a _____ pin DIP
a) 40 b) 45 c) 20 d) 35
130)The 8085 Microprocessor uses__________ V power supply
a) +5V b) -5V c) +12v d) -12v
131)The address / data bus in 8085 is __________
a) Multiplexed b) demultiplexed c) decoded d) loaded
132)The Stack pointer holds__________
a) 16 bit address b) 16 bit data c) 8 bit address d) 8 bit data
133)The First electronic computer was completed in __________
a) 1946 b) 1938 c) 1941 d) 1950
134)The First Generation of computer appeared during the period__________
a) 1945 to 1954 b) 1964 to 1974 c) 1934 to 1944 d) 1937 to 1949
135)The Second Generation of computers used __________
a) IC-Chip b) Transistors c) Vaccum tubes d) Microprocessor chip
136)The fourth Generation began in __________
a) 1974 b) 1935 c) 1965 d) 1975
137)__________is used to create Large program on internet
a) C++ b) HTML c) C language d) Java script
138)The Device which converts instructions into the binary form that is understood by the
computer and supply to the computer is known as__________
a) Input b) Output c) Automatic d) Memory
139)Laptop PCs are also known as __________Computers
a) Mainframe b) Super c) Notebook d) personal
140) is a __________ symbol
a) Processing b) Terminal c) Input/ Output d) decision
141)The symbol is used to indicate a point at which decision has to be made________
a) Connector b) decision c) processing d) Terminal
142)Windows 98 is __________
a) Graphics System b) Operating System c) Drawing system d) Processing
system
143)A common topology to any network is __________topology
a) Bus b) Star c) Tree d) Ring
144)A flip flop has __________stable status
a) Two b) Three c) four d) five
145)Flip flop is also called as __________
a) Stable b) bistable c) Tri stable d) not stable
146)The number system that we use in our day to day life is called the Number
System__________
a) Octal b) Binary c) hexadecimal d) Decimal
146)The Binary system has base__________
a) 8 b) 2 c) 10 d) 16
147)The Octal Number system has base __________
a) 2 b) 10 c) 8 d) 10
148)The Decimal Number system has base __________
a) 10 b) 8 c) 16 d) 2
149)The Hexadecimal Number system has base__________
a) 2 b) 10 c) 16 d) 8
150)110100112= ?16
a) D316 b) A316 c) B316 d) D216
151)25?10= ?2__________
a) 100012 b) 110012 c) 110002 d) 101012
152.Binary equivalent of decimal 8 is
a. 111 b. 1001 c. 1000 d. 10001
153.What will be the decimal equivalent of (111011.10)2
a. 48.625 b. 59.487 c. 48.487 d.59.625
154.What will be the hexadecimal equivalent of decimal number (54977)
a. D6C1 b. DC61 c. D6C5 d. none
155.What will binary equivalent of (24.1875)10
a. (11100.0011) b. (11001.0101) c. (10110.0011) d. None.
156.Which of the following is not an octal number?
a. 44 b. 29 c.6632 d.74
157.Hexadecimal number system has ….. symbols.
a. 15 b.12 c.16 d.10
158.Octal number system has ….. symbols.
a. 15 b.16 c.8 d.10
159.Binary number system has ….. symbols.
a. 15 b.16 c.2 d.10
160.Decimal number system has ….. symbols.
a. 15 b.16 c.2 d.10
161.The octal equivalent of (13)10 is
a. 18 b. 14 c. 15 d. 16
162.Convert decimal number (100)10 to octal equivalent will give
A. 100 b.120 c.144 d.154
163.Hexadecimal equivalent of (58)10 will be
a. 72 b.111010 c.3A d.3C
164.The result after converting binary number(100011)2 to decimal will be
a. 30 b.43 c.35 d. None
165.The decimal equivalent of sum of two binary numbers is (1010101)2 and
(1001010)2
a. 300 b. 200 c.326 d.226
166.Conversion of hexadecimal number (69)16 to octal equivalent will give
a. 451 b. 351 c. 251 d.151
167.Converting binary number (100110)2 to hexadecimal equivalent will give
a. 46 b.36 c.26 d.34
168.The difference between two decimal numbers 87 and 63 in binary format will be :
a. 10100 b. 11000 c.10010 d. None
169.The sum of two hexadecimal numbers (37) and (63) will be :
a. 100 b.9A c.45 d.8A
169.The sum of octal numbers (25)8 + (52)8 +(33)8 is :
a. (90)10 b.(132)8 c.(5A)16 d. All above.
170.What are the essential feature of any number system?
a. Operators b Radix c. Base d. b and c.
171.The binary equivalent of (64)10 is :
a. 11000000 b. 1100000 c. 1000000 d. 1100010
172.The binary equivalent of octal number (43)8
a. 11000 b.11111 c. 10011 d.10111
173.(72)10 is equivalent to :
a. (108)8 b. (27)8 c. (F3)8 d. (110)8
174.Find complements of the following numbers :
a. 10 b. 101 c. 101101 d. 011011
175.Subtract 0110111 from 1101110
333. Subtract 01110 from 10101.
176.Logic gate is electronic circuit which makesi)
Logical decision ii) Boolean algebra
177. Which gate has only one input and only one output.
i) NOT Gate
178. In positive logic system, positive voltage level (LOW) represents…
i) Logical 1 state ii) Logical o state
179. In positive logic system,Most Negative voltage level (LOW) represents
- Logical 0 state
180. In Negative logic system – most positive voltage level (High) represents
- Logical 0 state
181. In Negative logic system ,Most Negative voltage level (LOW) represents
- Logical 1 state
182. Draw symbols of OR gate
183. Draw symbols of AND gate
184. Draw symbols of NOT gate
185. Draw symbols of NOR gate
186. Draw symbols of NAND gate
187. Draw symbols of Ex-OR gate
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