UGC NET Paper1 Previous Year Solved Papers - 24th June 2019 Evening Shift
| Set - I | Set -II |
| (a) First Generation | (i) Transistor |
| (b) Second Generation | (ii) VLSI microprocessor |
| (c) Third Generation | (iii) Vacuum tube |
| (d) Forth Generation | (iv) Integrated circuit |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| (1) | (iii) | (iv) | (i) | (ii) |
| (2) | (iii) | (i) | (iv) | (ii) |
| (3) | (iii) | (i) | (ii) | (iv) |
| (4) | (i) | (iii) | (iv) | (ii) |
- Option : B
- Explanation : A vacuum tube computer, now termed a first- generation computer, is a computer which uses vacuum tubes for logic circuitry. A second generation computer which is also called transistor computer is a computer which uses discrete transistors instead of vacuum tubes. The computers of third generation used Integrated Circuits (ICs) in place of transistors. A single IC has many transistors, resistors, and capacitors along with the associated circuitry. The period of fourth generation was from 1971-1980. Computers of fourth generation used Very Large Scale Integrated (VLSI) circuits. VLSI circuits have about 5000 transistors.
- Option : B
- Explanation : A computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.
38. The expansion of SANKALP is:
- Option : C
- Explanation : Skills Acquisition and Knowledge Awareness for Livelihood Promotion (SANKALP)project aims to implement the mandate of the National Skill Development Mission (NSDM), which was launched on 15th July by Ministry of Skill Development & Entrepreneurship, through its core sub-missions.
39. Which of the following is not a/an web browser?
- Option : D
- Explanation : Yahoo is an American web services provider while internet Explorer, Mozilla Firefox and Google Chrome are web browsers.
40. Which pollutant is the major source of marine pollution?
- Option : A
- Explanation : Marine pollution occurs when harmful effects result from the entry into the ocean of chemicals, particles, industrial, agricultural, and residential waste, noise, or the spread of invasive organisms. About 80% of marine litter comes from land-based sources (eg. through drains, sewage outfalls, industrial outfalls, direct littering) while 20% comes from marine-based activities such as illegal dumping and shipping for transport, tourism and fishing.
