PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 Which register is connected to the memory by way of the address bus. MAR MDR SAM None
2 Which bus plays a crucial role in I/O System bus Control bus address bus Both a and b
3 Which microprocessor to read an item from memory. VAM SAM MOC None
4 VAM sand for Valid memory address Virtual memory address variable memory address None
5 MAR stand for Memory address register Memory data recode Micro data register None
6 SAM stand for Simple architecture machine Solved architecture machine Both a and b None
7 Which register is used to communicate with memory. MAR MDR Both a and b None
8 A microprocessor retries instructions from Control memory Cache memory Main memory Virtual memory
9 The problems of bus confit and spares address distribution are eliminated by the use of ___ address technique. Fully decoding Half decoding Both a and b None
10 in linear decoding address bus of 16 -bit wide can connect only of RAM Address map is not contiguous Confects occur if two of the select lines become active at the same time If all unused address lines are not used as chip selectors then these unused lines become don't cares. None
11 Which storage technique does not decoding circuit. Linear decoding Fully decoding partially None
12 The capacity of this chip is 1 KB they are organized in the form of 1024 words with 8 bit word the what is the site of address bus. 8 bit 10 bit 12 bit 16 bit
13 When CS_ the chip is not selected at all hence D7 to D0 are driven to high impendence state. High Low Medium Stand by
14 WE stand for Write enable Wrote enable Write envy None
15 CS stand for Cable select Chip select Control select Cable system
16 Which technique is uses for main memory array design. Linear decoding Fully decoding Both a and b None
17 Which statement is false about WR signal WR signal controls the input buffer the bar over Wr means that this is an active low signal the bar over WR means that this is an active high signal If WR is 0 then the input data reaches the latch input.
18 Which latch is mostly used creating memory register. SR-Latch JK- Latch D-Latch T-Latch
19 Which RAM is created using MOS transistors. Dynamic RAM Static RAM Permanent RAM SD RAM
20 Which type of RAM need regular referred. Dynamic RAM Static RAM Permanent RAM SD RAM
21 The ram which is created using bipolar transistors is called. Dynamic RAM Static RAM Permanent RAM DDR RAM
22 Customized ROMS are called. Mask ROM Flash ROM EPROM None
23 Secondary memory is also called. Auxiliary Backup store Both a and b None
24 Secondary memory can store. Program store code Compiler Operating system All of these
25 Which is the type of microcomputer memory Processor memory Primary memory Secondary memory All of these
26 Each memory location has Address Contents Both a and b None
27 PROM stand for Programmable Read only memory Erasable programmable read only memory Both a and b None
28 Using 12 binary digits how many queue house addresses would be possible. 2<sup>8 </sup>= 256 2<sup>12</sup> = 4096 2<sup>16</sup> = 65536 None
29 When memory write or I/O read are active data is from the processor. Input Out put Processor None
30 Which memory read or I/O read are active data is to the procesor. Input Out put Processor None
Download This Set

Is this page helpful?