The first generation of computers was based on which technology?
Answer: B
Correct answer: Vacuum tubes
First generation machines - ENIAC, EDVAC, UNIVAC I - switched with vacuum tubes, which is why they were enormous, drew great quantities of power and failed often. Transistors came with the second generation, integrated circuits with the third and microprocessors with the fourth.
Please log in or register to report this question.
Second generation computers are made of
Answer: B
Correct answer: Transistors
The second generation replaced the vacuum tube with the transistor, which is far smaller, needs much less power and lasts far longer. LSI and VLSI are later degrees of integration belonging to the third and fourth generations.
Please log in or register to report this question.
Which was an early mainframe computer?
Answer: D
Correct answer: ENIAC
ENIAC, completed in 1946, was among the earliest electronic mainframes; the other three names are not computers at all. Note the spelling: UNIVAC was a real machine, but UNIC is not.
Please log in or register to report this question.
Super computers are mainly useful for
Answer: A
Correct answer: Mathematical intensive scientific applications
Supercomputers are built for problems that need vast numbers of arithmetic operations - weather modelling, molecular simulation, nuclear physics. Data retrieval and heavy input-output are the work of mainframes, which are designed for throughput of transactions rather than for raw floating-point speed.
Please log in or register to report this question.
General purpose computers are those that can be adopted to countless uses simply by changing its
Answer: C
Correct answer: Program
What makes a computer general purpose is that the same hardware performs a different task when given different instructions. Changing the devices attached to it or the processor inside it does not alter what job it can be put to.
Please log in or register to report this question.
A collection of 8 bits is called
Answer: A
Correct answer: Byte
Eight bits make a byte. Four bits make a nibble, and a word is whatever width the particular processor handles at once - 16, 32 or 64 bits on modern machines.
Please log in or register to report this question.
A typical modern computer uses
Answer: B
Correct answer: LSI chips
Modern computers are built from large-scale integrated circuits. Magnetic cores and vacuum tubes belong to the first and second generations, and magnetic tape is used for backup rather than for primary memory.
Please log in or register to report this question.
Which of the following is the most powerful type of the computer?
Answer: D
Correct answer: Super computer
Supercomputers are the fastest machines built, measured in floating-point operations per second. A mainframe handles more simultaneous users but far less computation, a microcomputer is a personal machine, and a superconductor is a material, not a computer.
Please log in or register to report this question.
_________ computers are used in Banking, Railways, and Airlines.
Answer: D
Correct answer: Mainframe Computer
Banks, railways and airlines need one machine to handle very large numbers of transactions and users reliably, which is exactly what mainframes are designed for. Supercomputers are optimised for calculation rather than for transaction volume.
Please log in or register to report this question.
The most important or powerful computer in a typical network is _____
Answer: C
Correct answer: Network server
The server holds the shared data and services and answers requests from every other machine, so it needs the most capacity and is the most important machine on the network. Clients, stations and desktops are the machines making those requests.
Please log in or register to report this question.
