The Ultimate Computer Quiz! From Easy To Hard Questions
.
- 1.
How many 3-line-to-8-line decoders are required for a 1-of-32 decoder?
- A.
1
- B.
2
- C.
4
- D.
8
Correct Answer
C. 4 -
- 2.
Race around condition may occur when J and K are
- A.
0,1
- B.
1,0
- C.
0,0
- D.
1,1
Correct Answer
D. 1,1 -
- 3.
One example of the use of an S-R flip-flop is as a(n):
- A.
Binary storage register
- B.
Racer
- C.
Astable oscillator
- D.
Transition pulse generator
Correct Answer
A. Binary storage register -
- 4.
The primary use for Gray code is:
- A.
Coded representation of a shaft's mechanical position
- B.
Turning on/off software switches
- C.
To represent the correct ASCII code to indicate the angular position of a shaft on rotating machinery
- D.
To convert the angular position of a shaft on rotating machinery into hexadecimal code
Correct Answer
A. Coded representation of a shaft's mechanical position -
- 5.
Why is the fan-out of CMOS gates frequency dependent?
- A.
Each CMOS input gate has a specific propagation time and this limits the number of different gates that can be connected to the output of a CMOS gate.
- B.
When the frequency reaches the critical value, the gate will only be capable of delivering 70% of the normal output voltage and consequently the output power will be one-half of normal; this defines the upper operating frequency.
- C.
The higher the number of gates attached to the output, the more frequently they will have to be serviced, thus reducing the frequency at which each will be serviced with an input signal.
- D.
The input gates of the FETs are predominantly capacitive, and as the signal frequency increases the capacitive loading also increases, thereby limiting the number of loads that may be attached to the output of the driving gate.
Correct Answer
D. The input gates of the FETs are predominantly capacitive, and as the signal frequency increases the capacitive loading also increases, thereby limiting the number of loads that may be attached to the output of the driving gate. -
- 6.
Fast-look-ahead carry circuits found in most 4-bit full-adder circuits
- A.
Determine sign and magnitude
- B.
Reduce propagation delay
- C.
Add a 1 to complemented inputs
- D.
Increase ripple delay
Correct Answer
B. Reduce propagation delay -
- 7.
What is a shift register that will accept a parallel input, or a bidirectional serial load and internal shift features, called?
- A.
Tristate
- B.
End round
- C.
Universal
- D.
Conversion
Correct Answer
C. Universal -
- 8.
How can parallel data be taken out of a shift register simultaneously?
- A.
Use the Q output of the first FF.
- B.
Use the Q output of the last FF.
- C.
Tie all of the Q outputs together.
- D.
Use the Q output of each FF.
Correct Answer
D. Use the Q output of each FF. -
- 9.
When using even parity, where is the parity bit placed?
- A.
Before the MSB
- B.
After the LSB
- C.
In the parity word
- D.
After the odd parity bit
Correct Answer
B. After the LSB -
- 10.
A settable flip-flop's normal starting state when power is first applied to a circuit is always the ________ state.
- A.
Reset
- B.
Set
- C.
Toggle
- D.
Dual
Correct Answer
B. Set -
- 11.
Why is a pull-up resistor needed for an open collector gate?
- A.
To provide Vcc for the IC
- B.
To provide ground for the IC
- C.
To provide the HIGH voltage
- D.
To provide the LOW voltage
Correct Answer
C. To provide the HIGH voltage -
- 12.
Which logic family is characterized by a multiemitter transistor on the input?
- A.
TTL
- B.
CMOS
- C.
ECL
- D.
None of the above
Correct Answer
A. TTL -
- 13.
What is one disadvantage of an S-R flip-flop?
- A.
It has no enable input
- B.
It has an invalid state
- C.
It has no clock input
- D.
It has only a single output
Correct Answer
B. It has an invalid state -
- 14.
How many flip-flops are required to construct a decade counter?
- A.
10
- B.
8
- C.
5
- D.
4
Correct Answer
D. 4 -
- 15.
MOD-6 and MOD-12 counters are most commonly used as:
- A.
Frequency counters
- B.
Multiplexed displays
- C.
Digital clocks
- D.
Power consumption meters
Correct Answer
C. Digital clocks -
- 16.
Which of the following logic families has the highest maximum clock frequency?
- A.
S-TTL
- B.
AS-TTL
- C.
HS-TTL
- D.
HCMOS
Correct Answer
B. AS-TTL -
- 17.
Which of the following logic families has the shortest propagation delay?
- A.
S-TTL
- B.
AS-TTL
- C.
HS-TTL
- D.
HCMOS
Correct Answer
B. AS-TTL -
- 18.
Which of the logic families listed below allows the highest operating frequency?
- A.
74AS
- B.
54S
- C.
ECL
- D.
HCMOS
Correct Answer
C. ECL -
- 19.
Which search engine was named KUMO during its internal testing?
- A.
Google
- B.
Yahoo
- C.
Bing
- D.
Baidu
Correct Answer
C. Bing -
- 20.
Who is the author of "Fault Lines : How hidden fractures still threaten the world economy" ?
- A.
Manmohan Singh
- B.
D.Subba Rao
- C.
Raghuram Rajan
- D.
Amitav Ghosh
Correct Answer
A. Manmohan Singh -
- 21.
In the digital clock project, what type of counter is used to count to 59 seconds?
- A.
MOD-60
- B.
MOD-6
- C.
BCD
- D.
BCD followed by MOD-6
Correct Answer
D. BCD followed by MOD-6 -
- 22.
Who is the only Indian to have been awarded the title 'Hero of the Soviet Union' ?
- A.
Rakesh Sharma
- B.
Abdul Kalam
- C.
Ravish Malhotra
- D.
Abdul Ahad Mohmand
Correct Answer
A. Rakesh Sharma -
- 23.
GT, Antara,Insignia and Ampera are key brands of which company?
- A.
Renault
- B.
Opel
- C.
Daewoo
- D.
BMW
Correct Answer
B. Opel -
- 24.
Who is the first Indian to win a medal in Olympics in Badminton?
- A.
Pullela Gopichand
- B.
Saina Nehwal
- C.
Parupalli Kashyap
- D.
P.V. Sindhu
Correct Answer
A. Pullela Gopichand -
- 25.
Arachnophobia refers to the fear of ______________?
- A.
Cockroaches
- B.
Spider
- C.
Honey bees
- D.
Ants
Correct Answer
B. Spider -
- 26.
Who is regarded as the "father of modern observational Astronomy" ?
- A.
Nicolaus Copernicus
- B.
Johannes Kepler
- C.
Sir Isaac Newton
- D.
Galileo Galilei
Correct Answer
D. Galileo Galilei -
- 27.
Which American Computer company is called BIG BLUE?
- A.
IBM
- B.
Compaq corporation
- C.
Microsoft
- D.
Tandy svenson
Correct Answer
A. IBM -
- 28.
Which celebrity became the first Indian to cross 1 million follower mark on Twitter ?
- A.
A.R.Rahman
- B.
Sachin Tendulkar
- C.
Narendra Modi
- D.
Amitabh Bachchan
Correct Answer
B. Sachin Tendulkar -
- 29.
Diamond is a paramagnetic material
- A.
True
- B.
False
Correct Answer
B. False -
- 30.
The new technology unveiled by a team at MIT which can charge a phone upto 30 cm away
- A.
MagMIMO
- B.
Q1.1
- C.
PMA
- D.
Rezence
Correct Answer
A. MagMIMO -
- 31.
OpenSSL, websites can provide encrypted information to visitors, so the data transferred cannot be seen by others while it goes from your computer to the website. Version 1.0.1 of OpenSSL, released on April 19th, 2012, has a little bug that allows a person to retrieve information on the memory of the web server without leaving a trace. Name the bug
- A.
Heartbleed
- B.
Shellshock
- C.
Ice IX
- D.
SpyEye
Correct Answer
A. Heartbleed -
- 32.
The next windows OS after Windows 8.1
- A.
Windows 9
- B.
Windows 10
- C.
Windows 6.4
- D.
Windows 8.2
Correct Answer
B. Windows 10 -
- 33.
The bug which has stemmed from coding mistakes in bash, a low-level computer program that's been part of many, but not all, Unix-related systems for decades, Thereby making it mostly a problem for servers that run Unix, Linux or other similar operating-system variants
- A.
Heartbleed
- B.
Shellshock
- C.
Ice IX
- D.
SpyEye
Correct Answer
B. Shellshock -
- 34.
Apple has released updates to insulate Mac OS X systems from the dangerous the following bug, a pervasive vulnerability that is already being exploited in active attacks.
- A.
Heartbleed
- B.
Shellshock
- C.
SpyEye
- D.
Ice IX
Correct Answer
B. Shellshock -
- 35.
When was the first great Internet Slowdown — a protest by some of the web’s largest companies over the FCC and US government’s handling of net neutrality
- A.
September 10,2014
- B.
June 10,2014
- C.
May 10,2014
- D.
March 10,2014
Correct Answer
A. September 10,2014 -
- 36.
The Google X team has been working for two years on a self flying drone-based delivery system on drone based delivery system project named
- A.
Project Wing
- B.
Project Fly
- C.
Project shield
- D.
Project constitute
Correct Answer
A. Project Wing -
- 37.
This game was removed from both Apple's App Store and Google Play by its creator on February 10, 2014, due to guilt over what he considered to be its addictive nature.
- A.
Swing Copter
- B.
Flappy Bird
- C.
Clumpsy bird
- D.
Fly bird
Correct Answer
B. Flappy Bird -
- 38.
Which of the following,used in mobiles is used to measure the orientation or vertical and horizontal positioning of the phone. The most basic application of this is the device knowing when to alternate the view of the screen depending on how you are holding it.
- A.
Accelerometer
- B.
Speedometer
- C.
Gyroscope
- D.
None of the above
Correct Answer
A. Accelerometer -
- 39.
Shelfari is a social cataloging website for books. Shelfari users build virtual bookshelves of the titles they own or have read, and can rate, review, tag, and discuss their books. Which company is offering this service?
- A.
Amazon
- B.
Intel
- C.
Microsoft
- D.
Infosys
Correct Answer
A. Amazon -
- 40.
What is Mozilla's online paying application called?
- A.
Mozpay
- B.
Mozmoney
- C.
Mozwallet
- D.
None of the above
Correct Answer
A. Mozpay -
- 41.
Who coined the term "Artificial Intelligence"?
- A.
John McCarthy
- B.
John Carter
- C.
John Raver
- D.
John Nash
Correct Answer
A. John McCarthy -
- 42.
NASA scientist developed which of the following satellites in order to mitigate droughts?
- A.
CAMP
- B.
DAMP
- C.
SAMP
- D.
RAMP
Correct Answer
C. SAMP -
- 43.
Which version of Windows phone OS runs on the Lumia series of smartphones by Nokia?
- A.
Mango
- B.
Plum
- C.
Lemon
- D.
Berry
Correct Answer
A. Mango -
- 44.
Which site helps users copy another person’s photos and put them on instagram as their own?
- A.
Insta Slash
- B.
Insta Mix
- C.
Insta Spark
- D.
Insta Pixel
Correct Answer
A. Insta Slash -
- 45.
The value of BDC
- A.
Is fixed for any particular transistor.
- B.
Varies with temperature.
- C.
Varies with IC.
- D.
Varies with temperature and IC
Correct Answer
D. Varies with temperature and IC -
- 46.
Arrrange the following the regions in ascending order according to their width.
- A.
Base,emitter,collector
- B.
Emitter, collector, base
- C.
Base, collector, emitter
- D.
Collector,emitter,base
Correct Answer
A. Base,emitter,collector -
- 47.
For normal operation of a pnp BJT, the base must be ________ with respect to the emitter and ________ with respect to the collector
- A.
Positive, negative
- B.
Positive, positive
- C.
Negative, positive
- D.
Negative, negative
Correct Answer
C. Negative, positive -
- 48.
When a transistor is used as a switch, it is stable in which two distinct regions?
- A.
Saturation and active
- B.
Active and cutoff
- C.
Saturation and cutoff
- D.
None of the above
Correct Answer
A. Saturation and active -
- 49.
What is the order of doping, from heavily to lightly doped, for each region?
- A.
Base, collector, emitter
- B.
Emitter, collector, base
- C.
Emitter, base, collector
- D.
Collector, emitter, base
Correct Answer
B. Emitter, collector, base -
- 50.
The output frequency of a full-wave rectifier diode circuit is ________ the input frequency
- A.
Half
- B.
Quarter
- C.
Equal to
- D.
Twice
Correct Answer
D. Twice -
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 19, 2022Quiz Edited by
ProProfs Editorial Team -
Oct 24, 2014Quiz Created by
Geetika Singh
- Binary Code Quizzes
- Computer Concept Quizzes
- Computer Essential Quizzes
- Computer Forensics Quizzes
- Computer Hardware Quizzes
- Computer Networking Quizzes
- Computer Parts Quizzes
- Computer Programming Quizzes
- Computer Science Quizzes
- Computer Security Quizzes
- Computer Shortcut Key Quizzes
- Computer Skills Quizzes
- Computer Virus Quizzes
- Cyber Security Quizzes
- Data Quizzes
- Data Security Quizzes
- Hacking Quizzes
- HCI Quizzes
- Internet Quizzes
- IT SecurITy Quizzes
- Malware Quizzes
- Microprocessor Quizzes
- Network Quizzes
- Operating System Quizzes
- Phishing Quizzes
- Programming Language Quizzes
- Server Quizzes
- Software Quizzes
Back to top