WWW stands for ?
Answer: B
Correct answer: World Wide Web
WWW stands for the World Wide Web - the system of hyperlinked documents that Tim Berners-Lee proposed in 1989, delivered over the internet by HTTP and addressed by URLs. The web is one service that runs on the internet, not the internet itself.
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The list of coded instructions is called
Answer: A
Correct answer: Computer program
A computer program is the list of coded instructions the machine executes. An algorithm is the method it implements, expressed independently of any language, and a flowchart is a picture of that method - neither can be run.
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CD–ROM is a kind of?
Answer: C
Correct answer: Optical disk
A CD-ROM stores data as pits and lands pressed into a reflective layer and reads them with a laser beam, so it is an optical disk. Magnetic disks record by magnetising a coating and read it with a head, and a magneto-optical disk combines both techniques - a laser to heat the spot, a magnetic field to write it.
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Page stealing
Answer: B
Correct answer: is taking page frames from other working sets
Page stealing is the memory manager taking a frame away from one process’s working set to satisfy another’s page fault. It is a sign that memory is over-committed, not that the system is well tuned, and it leads to thrashing if it goes far enough.
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Which of the following systems software does the job of merging the records from two files into one?
Answer: B
Correct answer: Utility program
Merging the records of two files into one is routine housekeeping on data, and that is the province of a utility program - the sort, merge, copy and backup programs supplied with the system. Security and networking software serve other purposes entirely.
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Which language is related to database ?
Answer: B
Correct answer: Sql
SQL - Structured Query Language - is the standard language for relational databases: it defines tables, and inserts, updates, deletes and queries the rows in them. Perl, PHP and Java are general-purpose programming languages that may send SQL to a database.
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The time required for the fetching and execution of one simple machine instruction is
Answer: B
Correct answer: CPU cycle
The complete fetch–decode–execute sequence for one simple machine instruction is a CPU cycle (also called the machine or instruction cycle). Seek time is how long a disk arm takes to reach a track, and real time refers to processing that must keep pace with external events.
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One gigabyte is equal to how many megabytes ?
Answer: B
Correct answer: 1024
Each step in the traditional binary hierarchy multiplies by 1024, since \(2^{10} = 1024\). So 1024 bytes make a kilobyte, 1024 kilobytes a megabyte and 1024 megabytes a gigabyte.
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The microcomputer, Intel MCS-80 is based on the widely used Intel
Answer: A
Correct answer: 8080 microprocessor
The Intel MCS-80 was the family of chips built around the 8080 microprocessor, introduced in 1974 - an 8-bit processor with a 16-bit address bus reaching 64 KB of memory. The 8085 and the 16-bit 8086 belong to the later MCS-85 and iAPX 86 families.
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The symbols used in an assembly language are
Answer: B
Correct answer: Mnemonics
Assembly language replaces each binary operation code with a short mnemonic - MOV, ADD, JMP - chosen to remind the programmer what the instruction does, and names memory locations with symbolic labels. The assembler translates those mnemonics back into the machine code.
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