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 | ||
