Practice Set 1 question answer - computer mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Registers, which are partially visible to users and used to hold conditional, are known as
(a)
(b)
(c)
(d)
(e)
Q-2) A typical personal computer used for business purposes would have... of RAM.
(a)
(b)
(c)
(d)
(e)
Q-3) If an 8-bit integer has a maximum of 256 possible values, what is the highest possible value of a 16 bit integer?
(a)
(b)
(c)
(d)
(e)
Q-4) ASCII code is a......... bit code.
(a)
(b)
(c)
(d)
(e)
Notes: ASCII is a 7-bit code, representing 128 different characters. When an ASCII character is stored in a byte the most significant bit is always zero.
Q-5) The Octal Number system has base ______
(a)
(b)
(c)
(d)
(e)
The octal numeral system, or oct for short, is the base-8 number system and uses the digits 0 to 7
Q-6) Which of the following is the largest unit of storage?
(a)
(b)
(c)
(d)
(e)
Q-7) How many address lines are needed to address each memory location in a 2048 x 4 memory chip?
(a)
(b)
(c)
(d)
(e)
Notes: 11 address lines are needed to address each machine location in a 2048 X 4 memory chip.
It means a memory of 2048 words, where each word is 4 bits. So to address 2048 (or 2K, where K means 2^10 or 1024), you need 11 bits, so 11 address lines. To express in very easy terms, without any bus-multiplexing, the number of bits required to address memory is the number of lines (address or data) required to access that memory.
Q-8) Which of the following is a secondary memory device?
(a)
(b)
(c)
(d)
(e)
Secondary memory is where programs and data are kept on a long-term basis. Common secondary storage devices are hard disks and floppy disks. The hard disk has enormous storage capacity compared to the main memory.
Q-9) A file name extension for Word 2007 files is ___.
(a)
(b)
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(d)
(e)
docx file is a Microsoft Word text document. The format was introduced as a new standard for text documents with the release of Word version 2007
Q-10) If a new device is attached to a computer, such as a printer or scanner, its __________ must be installed before the device can be used.
(a)
(b)
(c)
(d)
(e)