In this article we will see latest 25 questions that are important for AFCAT technical branch applicants from Btech/B.E of computer science (and related) or information technology (and related) streams.
AFCAT EKT 2 2017 ONLINE COACHING
Top 25 AFCAT EKT 2 2017 MCQs for CSE IT Branch
(1) All of the following alloying elements of steel increase hardness but sacrifice ductility, except | ||
a. nickel | ||
b. vanadium | ||
c. molybdenum | ||
d. chromium |
(2) To make antenna more directional, either its size must be increased or | ||
a. the number of its feed horns must be increased | ||
b. the frequency of its transmission must be increased | ||
c. its effective isotropic radiated power (eirp) must be increased | ||
d. its footprint must be increased |
(3) A transponder is a satellite equipment which | ||
a. receives a signal from earth station and amplifies | ||
b. changes the frequency of the received signal | ||
c. retransmits the received signal | ||
d. does all of the above-mentioned functions |
(4) If the resistance in a circuit with constant voltage increases, the current will | ||
a. increase | ||
b. decrease | ||
c. stay the same | ||
d. Not enough information |
(5) If doubling the voltage across a resistor doubles the current through the resistor then | ||
a. the resistor value decreased | ||
b. the resistor value did not change | ||
c. the resistor value increased | ||
d. it is impossible to determine the change in the resistor value |
(6) A voltage will influence current only if the circuit is | ||
a. open | ||
b. insulated | ||
c. high resistance | ||
d. closed |
(7) The most abundant rare gas in the atmosphere is | ||
a. He | ||
b. Ne | ||
c. Ar | ||
d. Xe |
(8) The most electro-negative element among the following is | ||
a. sodium | ||
b. bromine | ||
c. fluorine | ||
d. oxygen |
(9) 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? | ||
a. 1.8 km, 0.15 km | ||
b. 2.2 km, 0.20 km | ||
c. 2.8 km, 0.25 km | ||
d. 3.3 km, 0.30 km |
(10) Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? | ||
a. Pressure and Young’s modules | ||
b. Planck’s constant and Angular momentum | ||
c. Impulse and moment of force | ||
d. Force and rate of change of linear Momentum |
(11) A hard disk is divided into tracks which are further subdivided into | ||
a. clusters | ||
b. sectors | ||
c. vectors | ||
d. heads |
(12) Which of the following is used to hold ROM, RAM, CPU and expansion cards? | ||
a. computer bus | ||
b. motherboard | ||
c. cache memory | ||
d. all of the above |
(13) The register which contains the instruction that is to be executed is known as | ||
a. Index register | ||
b. Instruction register | ||
c. Memory address register | ||
d. Memory data register |
(14) An adder in which the bits of the operands are added one after another is | ||
a. half-adder | ||
b. full-adder | ||
c. serial adder | ||
d. all of the above |
(15) Which of the following memories must be refreshed many times per second? | ||
a. static RAM | ||
b. dynamic RAM | ||
c. EPROM | ||
d. ROM |
(16) Which of the following services use TCP? (i) DHCP (ii) SMTP (iii) HTTP (iv) TFTP (v) FTP |
||
a. (i) and (ii) | ||
b. (ii), (iii) and (v) | ||
c. (i),(ii) and (iv) | ||
d. (i), (iii) and (iv) |
(17) 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 | ||
a. encoder | ||
b. decoder | ||
c. multiplexer | ||
d. demultiplexer |
(18) Which is the computer memory that does not forget? | ||
a. ROM | ||
b. RAM | ||
c. NVRAM | ||
d. All of the above |
(19) A computer program consists of | ||
a. system flowchart | ||
b. program flowchart | ||
c. algorithms written in computer’s language | ||
d. discrete logical steps |
(20) 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? | ||
a. Partitioning | ||
b. Multitasking | ||
c. Windowing | ||
d. Paging |
(21) What logic function is obtained by adding an inverter to the inputs of an AND gate? | ||
a. OR | ||
b. NAND | ||
c. XOR | ||
d. NOR |
(22) Which of the following is not a logical data-base structure? | ||
a. tree | ||
b. relational | ||
c. network | ||
d. chain |
(23) Frames from one LAN can be transmitted to another LAN via the device | ||
a. Router | ||
b. Bridge | ||
c. Repeater | ||
d. Modem |
(24) The function of CPU is | ||
a. to provide a hard copy | ||
b. to read, interpret and process the information and instruction | ||
c. to communicate with the operator | ||
d. to provide external storage of text |
(25) A program that converts computer data into some code system other than the normal one is known as | ||
a. Encoder | ||
b. Simulation | ||
c. Emulator | ||
d. Coding |
hello sir/ mam its nice questions but what about key pleasa….