EKT Computer Sciecne 02 2015 Question Paper Online Test
Question #1
Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is
Options
1) 2/9
2) 1/9
3) 8/9
4) 7/9
Question #2
What is the next number in the series 1,3,11,19,37,_____
Options
1) 41
2) 56
3) 55
4) None of the above
Question #3
An unbiased die with faces marked 1, 2, 3, 4, 5 and 6 is rolled four times. Out of four face values obtained, the probability that the minimum face value is not less than 2 and the maximum face value is not greater than 5 is
Options
1) 16/81
2) 1/81
3) 80/81
4) 65/81
Question #4
The projection of a vector on another vector is
Options
1) scalar
2) vector
3) neither vector nor scalar
4) either scalar or vector
Question #5
The value of Sin ? +cos? will be greatest when ? =_____.
Options
1) 45
2) 30
3) 90
4) 60
Question #6
How long is an IPv6 address?
Options
1) 32 bits
2) 128 bytes
3) 64 bits
4) 128 bits
Question #7
What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
Options
1) NAT
2) Static
3) Dynamic
4) PAT
Question Skipped
Question #8
What are the two main types of access control lists (ACLs)?
(i) Standard (ii) IEEE (iii) Extended (iv) Specialized
Options
1) (i) and (iii)
2) (ii) and (iv)
3) (iii) and (iv)
4) (i) and (ii)
Question #9
What is a stub network?
Options
1) A network with more than one exit point.
2) A network with more than one exit and entry point.
3) A network with only one entry and no exit point
4) A network that has only one entry and exit point.
Question #10
Which of the following languages is more suited to a structured program?
Options
1) PL/1
2) FORTRAN
3) BASIC
4) PASCAL
Question Skipped
Question #11
Which of the following is the 1's complement of 10?
Options
1) 01
2) 110
3) 11
4) 10
Question #12
The time required for the fetching and execution of one simple machine instruction is
Options
1) delay time
2) CPU cycle
3) real time
4) seek time
Question #13
A single packet on a data link is known as
Options
1) Path
2) Frame
3) Block
4) Group
Question Skipped
Question #14
ASCII stands for
Options
1) American Standard Code for Information Interchange
2) All purpose Scientific Code for Information Interchange
3) American Security Code for Information Interchange
4) American Scientific Code for Information Interchange
Question #15
A program that converts computer data into some code system other than the normal one is known as
Options
1) Encoder
2) Simulation
3) Emulator
4) Coding
Question Skipped
Question #16
Which of the following are the two main components of the CPU?
Options
1) control unit and registers
2) registers and main memory
3) control unit and ALU
4) ALU and bus
Question #17
The function of CPU is
Options
1) to provide a hard copy
2) to read, interpret and process the information and instruction
3) to communicate with the operator
4) to provide external storage of text
Question #18
When an input electrical signal A=10100 is applied to a NOT gate, its output signal is
Options
1) 01011
2) 10001
3) 10101
4) 00101
Question #19
Your router has the following IP address on Ethernet: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router?
(i) 172.16.1.100 (ii) 172.16.1.198 (iii) 172.16.2.255 (iv) 172.16.3.0
Options
1) (i) only
2) (ii) and (iii) only
3) (iii) and (iv) only
4) None of the above
Question Skipped
Question #20
Frames from one LAN can be transmitted to another LAN via the device
Options
1) Router
2) Bridge
3) Repeater
4) Modem
Question #21
Which of the following is not a logical data-base structure?
Options
1) tree
2) relational
3) network
4) chain
Question #22
Conversion of decimal number 6110 to its binary number equivalent is
Options
1) 1100112
2) 110011102
3) 1111012
4) 111112
Question #23
What logic function is obtained by adding an inverter to the inputs of an AND gate?
Options
1) OR
2) NAND
3) XOR
4) NOR
Question #24
A medium for transferring data between two locations is called
Options
1) Network
2) Communication channel
3) Modem
4) Bus
Question #25
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
Options
1) Partitioning
2) Multitasking
3) Windowing
4) Paging
Question #26
The slowest transmission speeds are those of
Options
1) twisted-pair wire
2) coaxial cable
3) fibre-optic cable
4) microwaves
Question #27
A computer program consists of
Options
1) system flowchart
2) program flowchart
3) algorithms written in computer's language
4) discrete logical steps
Question #28
Which is the computer memory that does not forget?
Options
1) ROM
2) RAM
3) NVRAM
4) All of the above
Question #29
A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
Options
1) encoder
2) decoder
3) multiplexer
4) demultiplexer
Question #30
Which of the following services use TCP?
(i) DHCP (ii) SMTP (iii) HTTP (iv) TFTP (v) FTP
Options
1) (i) and (ii)
2) (ii), (iii) and (v)
3) (i),(ii) and (iv)
4) (i), (iii) and (iv)
Question #31
Which of the following memories must be refreshed many times per second?
Options
1) static RAM
2) dynamic RAM
3) EPROM
4) ROM
Question #32
An adder in which the bits of the operands are added one after another is
Options
1) half-adder
2) full-adder
3) serial adder
4) all of the above
Question Skipped
Question #33
The register which contains the instruction that is to be executed is known as
Options
1) Index register
2) Instruction register
3) Memory address register
4) Memory data register
Question #34
Which of the following is used to hold ROM, RAM, CPU and expansion cards?
Options
1) computer bus
2) motherboard
3) cache memory
4) all of the above
Question #35
A hard disk is divided into tracks which are further subdivided into
Options
1) clusters
2) sectors
3) vectors
4) heads
Question #36
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
Options
1) Pressure and Young's modules
2) Planck's constant and Angular momentum
3) Impulse and moment of force
4) Force and rate of change of linear Momentum
Question #37
Out of the following, which is not emitted by radioactive substance?
Options
1) electrons
2) electromagnetic radiations
3) alpha particles
4) neutrons
Question #38
Sound produced at a point is heard by a person after 5 seconds, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Options
1) 1.8 km, 0.15 km
2) 2.2 km, 0.20 km
3) 2.8 km, 0.25 km
4) 3.3 km, 0.30 km
Question #39
The most electro-negative element among the following is
Options
1) sodium
2) bromine
3) fluorine
4) oxygen
Question #40
For attenuation of high frequencies we should use
Options
1) shunt capacitance
2) series capacitance
3) inductance
4) resistance
Question Skipped
Question #41
A voltage will influence current only if the circuit is
Options
1) open
2) insulated
3) high resistance
4) closed
Question #42
Which resistive component is designed to be temperature sensitive?
Options
1) Thermistor
2) Rheostat
3) Potentiometer
4) Photoconductive cell
Question Skipped
Question #43
If doubling the voltage across a resistor doubles the current through the resistor then
Options
1) the resistor value decreased
2) the resistor value did not change
3) the resistor value increased
4) it is impossible to determine the change in the resistor value
Question #44
Friction factor for fluid flow in pipe does not depend upon the
Options
1) pipe length.
2) pipe roughness
3) fluid density & viscosity
4) mass flow rate of fluid
Question #45
If the resistance in a circuit with constant voltage increases, the current will
Options
1) increase
2) decrease
3) stay the same
4) Not enough information
Question #46
A transponder is a satellite equipment which
Options
1) receives a signal from earth station and amplifies
2) changes the frequency of the received signal
3) retransmits the received signal
4) does all of the above-mentioned functions
Question #47
To make antenna more directional, either its size must be increased or
Options
1) the number of its feed horns must be increased
2) the frequency of its transmission must be increased
3) its effective isotropic radiated power (eirp) must be increased
4) its footprint must be increased
Question Skipped
Question #48
All of the following alloying elements of steel increase hardness but sacrifice ductility, except
Options
1) nickel
2) vanadium
3) molybdenum
4) chromium
Question Skipped
Question #49
The nuclear particles which are assumed to hold the nucleons together are
Options
1) electrons
2) positrons
3) neutrons
4) mesons
Question #50
The most abundant rare gas in the atmosphere is
Options
1) He
2) Ne
3) Ar
4) Xe
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