Quiz
Operating Systems Practical Test 2
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Perguntas do quiz (20)
1What is the maximum number of values which can be shown in a binary (2-bit) system?
- A2
- B3
- C4
- D5
2Which component converts logical memory addresses to physical addresses?
- AALU
- BMMU
- CCPU
- DFPU
3A technique in which physical memory is broken into blocks of the same size is called:
- ASegmentation
- BSwapping
- CCompaction
- DPaging
4Which one is NOT among the benefits of Virtual Memory (VM)?
- AFaster deadlock detection
- BMore programs can be run at the same time
- CPossibly each program can run faster
- DA program would no longer be constrained by the amount of physical memory
5What is the definition for internal fragmentation; how can it be solved?
- AMemory block assigned to a process is bigger and some portion of memory is left unused; can be solved by Compaction
- BMemory block assigned to a process is bigger and some portion of memory is left unused; can be solved by Redesigning a program
- CTotal memory space is enough for a process to fit in in but it is not contiguous; can be solved by Compaction
- DTotal memory space is enough for a process to fit in in but it is not contiguous; can be solved by Redesigning a program
6What is the main reason for processes getting into a deadlock?
- AResource sharing
- BFragmentation
- CSwapping in/out memory
- DPaging
7Which one is NOT among the deadlock recovery solutions?
- AKill all deadlocked processes
- BRoll back
- CKill one or more processes
- DReallocating current processes in memory
8Which one of the following is NOT shared by the threads in a process?
- AAddress space
- BThread ID
- CGlobal variables
- DSignal handlers
9Which of the following is NOT considered as the benefit of multi-threading?
- AUtilization of multiprocessor architecture
- BResource sharing
- CNo constraint by the amount of physical memory
- DResponsiveness
1010. How can a deadlock be prevented before occurring?
- ABy having Multi-threading
- BBy having Multi-tasking
- CBy having Virtual Memory program
- DBy having a Resource Management program
11Which one is mostly true about the different types of computer storage?
- ACPU registers are the most expensive, large size, and very fast type of storage
- BCache is very expensive, small size, and very fast type of storage
- CHard disk is expensive, large size and fast type of storage
- DRAM is expensive, small size, and fast type of storage
12Dividing/marking a disk into sectors that the disk controller can read and write is called:
- APhysical formatting
- BMBR
- CPartitioning
- DLogical formatting
13Which of the following is NOT true about File systems?
- AMounting is a method to attach a file system to the main file system
- BFAT file system is used in a USB drive because it is simple and robust
- CNTFS is a file system used in Windows
- DFile system is created during the physical/low-level formatting
14Which of the following is NOT true about Directory structures?
- AIn a tree-structured directory, directories and files may be shared by other users/directories
- BIn a two-level directory, each user has separate directories and each directory cannot contain any subdirectory
- CIn tree-structured directory, each directory may contain files and subdirectories
- DIn a single level directory, all directories must have unique names and it cannot contain any subdirectory
15Which of the following is the CORRECT command to set the permission of Test1.php?
- rwx rw- r--- Achmod 761 Test.php
- Bchmod 731 Test1.php
- Cchmod 764 Test1.php
- Dchmod 016 Test1.php
16Prevention of legitimate use by overloading the targeted computer is called:
- ABreach of availability
- BTheft of service
- CMasquerading
- DDenial Of Service
177. The content of a user's /etc/passwd file is:
liam:x:2930:1875:A computing student:/home/liam:/bin/bash
Based on the above information, which of the followings is NOT true?- AThe user id is 2930
- BThe path to the user's shell is /bin/bash
- CThe user's password is 1875
- DThe username is liam
18Which of the followings is NOT true about Malware?
- ATrojan horse is a non-self-replication malware that drop malicious payload and create a backdoor
- BResident virus is a type of virus that will remain in the Master Boot Record on a hard disk
- CSpyware is a standalone malware that tries to gather and send information about the system without user's permission
- DMalware is a computer program that is used to breach computer security
19Granting access control for system’s resources is the responsibility of:
- ANormal user
- BGuest user
- CRoot user
- DIntruder
20Identity theft at financial services company is particularly done by:
- ACrimeware
- BAdware
- CRootkit
- DSpyware
Informações
- Descrição
- Quiz sobre Operating Systems Practical Test 2, criado por cuba haywood em 31-05-2018.
- Autor
- cuba haywood
- Idioma
- English
- Visualizações
- 3
- Avaliação
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