PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 The system calls in UNIX is written using which language. Java C C++ Assembly
2 Solaris is product of. IBP IBM Microsoft Sun microsystmes
3 What is meaning of ILP32 32 bit integrated Long & Pointer 32 bit integer long & pointer 32 bit integer Long & Point 32 bit integer , Lost & pointer
4 How applications communicates with kernel. Not disclosed by linux team SSL System calls Shell
5 Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as. Buffer cache Spooling Pooling Virtual memory
6 When did IBM released the first version of its disk operating system DOS version 1.0 1981 1982 1983 1984
7 File can have. Read access Write access Copy access All of above
8 Belady anomaly occurs in. LIFO FIFO LRU NRU
9 What are the global locks. They synchronize access to local resources. They synchronize access to global resources They synchronize access to local and global resources None of above
10 Which scheduling policy is most suitable for time shared operating system. Shortest job first FCFS LCFS Round robin
11 What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition. One Two Three Four
12 Remote computing services involves the use of. Multi processing Multi programming Batch processing Real time processing
13 In which of the following usually a front end processor is used. Virtual storage Time sharing Multi programming Multi heading
14 File record length Should be chosen to match the data characteristics Should be fixed Should be variable Vary system to system
15 Spooling most beneficial where Jobs are I/O bound Jobs are CPU bound Jobs are evenly divided as I/O bound are CPU bond All of above
16 Which of the following memory allocation scheme is subject to external fragmentation. Segmentation Swapping Demand paging Multiple contiguous fixed partitions
17 Re location bits used by relocating loader are a pacified by Relocating loader Assembler Translator Linker
18 Seek analysis is for. Paging issues Device busy problems Control unit busy problems All of above
19 Which of following is not an advantage of multiprogramming. Increased through out Shorter response time Ability to assign priories of jobs Decreased system overload
20 Which of the following is always there in a computer. Batch system Operating system Time sharing system Controlling system
21 Super visor state is only allowed to. Utility softwares Application sotware Operating system Guest user
22 Which of following need a device driever. Cache Disk Main memory Registers
23 What is the name of values that are automatically provided by software to reduce keystrokes. Data values Default values Defined values Fixed vallues
24 Which type of software can be used to merge data of two files in one files. System software Networking software Documenting software utility software
25 By which of following the problem of thrashing is significantly affected. Program size Program structure Primary storage Secondary strorage
26 if the CPU scheduling policy is FCFS then what would be average waiting time. 10 ms 10.8 ms 12 ms 12.8 ms
27 Distributed system should. High security Have better resource sharing Better system utilization Low system overhead
28 A hardware device which is capable of executing a sequence of instructions, is known as. CPU ALU CU Processor
29 Which is non pre emptive Round robin FIFO MS MSF
30 Scissoring enables A part of data to be displayed Entire data to be displayed Full data display on full area of seen No data display
Download This Set

Is this page helpful?