Computer GK
Computer GK - Part4
195) What is Source code?
It is the programming instructions created by some high level computer language
196) What is Machine code?
It is the binary code (1’s and 0’s)
197) What is firmware?
It is software program providing instructions to device to perform basic tasks and functions to communicate with other devices.
198) Where is firmware stored?
It is stored on Read-Only memory
199) What is a Server?
It is a computer that serves clients (which are devices or programs)
200) What is an IP address?
It is the unique address that identifies a device on the internet. Example 192.155.1.24
201) What is Internet Protocol?
It is a set of standards or rules for format of data and delivering data on Internet
202) What are types of IP addresses
They are private, public, static and dynamic
203) What is Ethernet?
It is a system that connects devices in a local area network (wired), that enables communication between the devices
204) What is DHCP (Dynamic Host Configuration Protocol)?
It is a network protocol that automatically assigns IP addresses, gateways etc to client devices
205) What is the first page of website called?
Home Page
206) What is the shortcut key to switch between programs
ALT+Tab
207) What is the shortcut key to go to the beginning of the program?
Home key
208) Which key launches start button?
Windows key
209) What is disk formatting?
It is the process of preparing data storage media for initial use
210) What is a cache?
It is the storage location to temporarily store data that helps application to load faster
211) What is the the world’s first electromechanical programmable fully automatic digital computer?
Z3
212) Who proposed the concept of modern computer?
Alan Turing
213) What was the first electronic stored-program computer?
The Manchester Baby
214) What is the first electronic digital programmable computer?
Colossus
215) What is the first general purpose digital computer built in USA
ENIAC
216) What is a transistor?
It is a semiconductor device used to amplify or switch electronic signals and electrical power
217) What did transistors replace in the development of computers?
Vacuum tubes
218) Who proposed the concept of field-effect transistor? When?
Julius Edgar Lilienfeld. 1925
219) Who built the first working transistor? When?
John Bardeen and Walter Brattain. 1947
220) To what generation of computers does transistors belong?
2nd generation
221) What are the benefits of transistors?
They are smaller, lets off less heat because they need less power than vacuum tubes
222) What is integrated circuit(IC)?
It is a set of electronic circuits on one chip (usually of silicon)
223) Who invented the first working integrated circuit(IC)? When
Jack Kilby. 1958
224) Of what material was Jack Kilby’s integrated circuit(IC) chip?
germanium
225) Who invented the first monolithic IC chip?
Noyce
226) Of what material was Noyce’s IC chip?
Silicon
227) What has been invented due to the development of MOS integrated circuit?
Microprocessor
228) What is data integrity?
It is the accuracy and consistency of data throughout its life-cycle
229) What is system integrity?
The capability of performing correctly as per specification under various conditions
230) What is web page?
It is a document of information written in html that can be viewed in web browser.
231) What is sitemap?
It is a file where information about the pages and other files on the website is provided. It also provides the relationships between them
232) What is CSS (Cascading Style Sheets)?
CSS defines how HTML elements are displayed. CSS controls the layout of web pages
233) What is a Landing page, Splash page and Home page?
Landing page is a tool for marketing. There is a call-to-action(CTA) like giving email address to proceed ahead. There is no link to other pages of the website.
Splash page gives information to visitors. It precedes any page on website. It can have disclaimer, new offer etc. It has a link to the main website
Home page is the main page of website. It gives an overview of website
234) What is Web Hosting?
It is a service that provides storage space and access to websites
235) What technologies are normally used for web design?
HTML, CSS, PHP, SSL etc
236) Vacuum tubes belong to which generation of computers?
1st generation
237) URL?
Uniform Resource Locator
238) In what format does computer store information?
In Binary format
239) GUI?
Graphical User Interface
240) ALU?
Arithmetic Logic Unit
241) What is a bit?
Smallest unit of data in computer
242) How many bits a byte has?
8 bits
243) How many bits a nibble has?
4 bits
244) Who are the fathers of the internet?
Vint Cerf and Bob Kahn
245) What is Param 8000?
It is the first Supercomputer of India
246) What is shortcut for undo?
Ctrl+z
247) What is ALT+F4?
Shortcut to turn off computer
248) What is shortcut to copy?
Ctrl+C
249) What is shortcut to paste data copied?
Ctrl+V
250) ULSI microprocessor belonged to which generation of computers?
5th generation
251) VLSI microprocessor belonged to which generation of computers?
4th generation
252) Integrated Circuit belonged to which generation of computers?
3rd generation
253) Transistors belonged to which generation of computers?
2nd generation
254) Ctrl+A is shortcut key to?
Select All
255) OCR?
Optical Character Recognition
256) OMR?
Optical Mark Reader
257) Who invented the QWERTY keyboard?
Christopher Latham Sholes
258) What is 1/1000th of a second?
millisecond
259) USB?
Universal Serial Bus
260) Which recognizes pencil mark?
Optical Mark Reader (OMR)
261) What does Modem do?
It converts digital signals to analog signals and vice versa
262) What is antivirus?
It is a software used to detect and delete viruses in computer
263) PDF?
Portable Document Format
264) What is spam?
It is junk email
265) Where is the computer language Fortran used?
It is used for scientific computing
266) ASCII?
American Standard Code for information interchange
267) Who is Tim Berners-Lee?
He invented the world wide web in 1989
268) What are the most used standard protocols of internet?
TCP/IP
269) What is a flowchart?
It is a graphical representation of a computer program
270) What is Chrome?
It is web browser that is developed by Google
271) Where is firmware stored?
ROM (Read-Only-memory)
272) What stores the user’s activity on web?
Cookie
273) What is pixel?
It is one of a small illumination of screen that creates image on screen
274) What is the most powerful computer?
Super computer
275) BIOS?
Basic input output system
276) What is 1024 gigabyte called?
Terabyte
277) TCP? IP?
Transmission Control Protocol. Internet Protocol
278) What is Phishing?
It is attack used to steal user data. The attacker impersonates as trusted entity and tricks the user to click a malicious link sent through email or text message
279) What is VPN(Virtual Private Network)?
It establishes a secure connection between the user and the internet. This disguises the IP address
280) What is clock speed?
It measures the number of cycles CPU executes per second. It is measured in GHz(gigahertz)
281) What is malware?
It is software that destroys computers
282) What is Algorithm?
It is a sequence of instructions to perform a task
283) What are impact printers and non-impact printers?
Impact printers prints by direct contact of an ink ribbon with paper. Non-impact printers do not impact a ribbon to print
284) What are examples of impact printers?
Dot-matrix printers, Daisy-Wheel printers and line printers
285) What are examples of non-impact printers?
Laser printers and Inkjet printers