Applied Computer Science
Chapter Exam Questions
Course Introduction
Applied Computer Science focuses on the practical implementation of computing concepts, technologies, and methodologies to solve real-world problems across various domains. The course covers topics such as software development, database management, networking, algorithms, and data structures, while emphasizing hands-on experience through projects, case studies, and collaborative assignments. Students learn to design, build, and maintain computer systems and applications, preparing them for careers in technology-driven industries. The curriculum often includes exposure to emerging fields such as artificial intelligence, cybersecurity, and cloud computing, ensuring graduates are equipped with relevant and in-demand skills.
Recommended Textbook
Understanding Operating Systems 5th Edition by Ann McHoes
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Chapter 1: Introducing Operating Systems
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Q1) The ____ allocates each resource, starts its operation, and, finally, deallocates the resource, making it available to the next process or job.
A) Device Manager
B) File Manager
C) Keyboard Manager
D) Memory Manager
Answer: A
Q2) ____ is the partitioning of a single server, each of which can support a different operating system.
A) Multiprocessing
B) Multithreading
C) Virtualization
D) Shared processing
Answer: C
Q3) The Memory Manager, the Interface Manager, the User Manager, and the File Manager are the basis of all operating systems.
A)True
B)False
Answer: False
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Page 3
Chapter 2: Memory Management: Early Systems
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Q1) The following algorithm can be described as ____. 1 Set counter to 1
2 Do while counter <= number of blocks in memory
If job_size > memory_size(counter)
Then counter = counter + 1
Else
Load job into memory_size(counter)
Adjust free/busy memory lists
Go to step 4
End do
3 Put job in waiting queue
4 Go fetch next job
A) first-fit memory allocation
B) best-fit memory allocation
C) least-fit memory allocation
D) fixed partition memory allocation
Answer: A
Q2) Memory is allocated during garbage collection.
A)True
B)False
Answer: False
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Page 4
Chapter 3: Memory Management: Virtual Memory
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Q1) To access a location in memory when using segmented memory management, the address is composed of two entries: ____.
A) the segment number and the line number
B) the segment number and the displacement
C) the line number and the displacement
D) the segment number, the line number, and the displacement
Answer: B
Q2) Within the Memory Manager the Segment Link Table lists details about each segment (one for each job).
A)True
B)False
Answer: False
Q3) Studies have shown that having any ____, even a small one, can substantially improve the performance of the computer system.
A) cache
B) memory block
C) page block
D) block
Answer: A
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Page 5
Chapter 4: Processor Management
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Q1) After a job has been placed on the READY queue by the Job Scheduler, the Process Scheduler takes over.
A)True
B)False
Q2) CPU-bound jobs (such as printing a series of documents) have many brief CPU cycles and long I/O cycles.
A)True
B)False
Q3) A program is an active entity that requires a set of resources, including a processor and special registers, to perform its function.
A)True
B)False
Q4) The shortest remaining time (SRT) algorithm is often used in interactive systems. A)True
B)False
Q5) Context switching is required by all preemptive algorithms.
A)True
B)False
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Chapter 5: Process Management
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Q1) Failure to lock database records before updating them may result in a ____ between processes.
A) struggle
B) race
C) deadlock
D) livelock
Q2) One problem with the Banker's Algorithm is that resources aren't well utilized because the algorithm assumes the worst case and, as a result, keeps vital resources unavailable to guard against unsafe states.
A)True
B)False
Q3) In a directed graph used to model deadlock, processes are represented using squares.
A)True
B)False
Q4) Deadlocks are most serious in real-time systems.
A)True
B)False
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Chapter 6: Concurrent Processes
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Q1) Lock and key synchronization must take place within a single ____.
A) instruction
B) computer
C) processor
D) machine cycle
Q2) In a symmetric configuration, processor scheduling is ____.
A) centralized
B) decentralized
C) multifaceted
D) balanced
Q3) In parallel computations, mutual exclusion is achieved automatically because each operation is handled in order, one at a time.
A)True
B)False
Q4) Each active thread in a process shares the ____ and the resources allocated to its process.
A) processor registers
B) program counter
C) data area
D) status
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Chapter 7: Device Management
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Q1) Data recorded on DASDs may or may not be blocked at the discretion of the ____.
A) end user
B) application programmer
C) operator
D) database programmer
Q2) The universal serial bus (USB) controller acts as an interface between the operating system, device drivers, and applications and the devices that are attached via the USB host.
A)True
B)False
Q3) Additional complex configurations of RAID can be created by combining multiple levels.
A)True
B)False
Q4) RAID-0 is ideal for data-critical real-time systems.
A)True
B)False
Q5) N-Step SCAN holds all new requests until the arm starts on its way back.
A)True
B)False
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Chapter 8: File Management
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Q1) In indexed storage, when a file is created, the pointers in the index block are all set to
A) the end of the volume
B) the beginning of the volume
C) null
D) zero
Q2) When someone creates a folder, the system creates a subdirectory in the current directory or folder.
A)True
B)False
Q3) The File Manager is in charge of the system's ____ components.
A) data
B) software
C) electronic
D) physical
Q4) A file descriptor usually contains only a file name and the directory name in which the file is located.
A)True
B)False
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Chapter 9: Network Organization Concepts
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Q1) The objective of a hybrid configuration is to select among the strong points of each topology and combine them to meet that system's communications requirements most effectively.
A)True
B)False
Q2) A MAN is a high-speed network often configured using a physical ring topology.
A)True
B)False
Q3) The physical topology of a network may not reflect its logical topology.
A)True
B)False
Q4) The Internet layer is equivalent to the data link layer of the OSI model.
A)True
B)False
Q5) Layer 6 of the OSI model is responsible for providing a user-oriented connection service and transferring data over the communication lines.
A)True
B)False
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Chapter 10: Management of Network Functions
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Q1) To determine an object's state, one must ____.
A) examine the state property
B) look in the object state block
C) perform an appropriate operation on it
D) examine the state table maintained by the DO/S
Q2) A DO/S should keep a global accounting of each network device and its availability, maintain each device's status record and control block, and distribute this information to all sites.
A)True
B)False
Q3) The network operating system handles the interfacing details and coordinates the remote processing.
A)True
B)False
Q4) A scheduler based on process priorities and durations is an example of the ____.
A) statistical decision theory
B) estimation theory
C) queuing theory
D) grouping theory
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Chapter 11: Security and Ethics
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Q1) Software to combat viruses is always preventive.
A)True
B)False
Q2) Intruders have been known to capture user passwords by using a ____ to replace the standard login program on the computer with an identical fake login that captures keystrokes.
A) worm
B) masquerade program
C) Trojan horse
D) virtual login console
Q3) If a password consists of ten characters, it would take a human about 4.5 years to guess the password if the human makes one try each second.
A)True
B)False
Q4) In 1977 the IEEE and the Association for Computing Machinery (ACM) issued a standard of ethics for the global computing community.
A)True
B)False
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Page 13
Chapter 12: System Management
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Q1) An algorithm for a positive feedback loop should monitor the effect of new arrivals in two places: the Processor Manager's control of the CPU and the Device Manager's read and write operations.
A)True
B)False
Q2) If directories are stored on the ____ track, then, on average, the disk drive arm has to travel farther to access each file than it would if the directories were kept in the center tracks.
A) outermost
B) innermost
C) master
D) volume
Q3) Deploying a patch to a large network is not much more complicated than deploying a patch on a single computer.
A)True
B)False
Q4) Patch management is a simple task that does not require much time or effort.
A)True
B)False
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Chapter 13: Unix Operating System
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Q1) The following command ____ , will copy the contents of chapt1 and chapt2 into a file named sectiona.
A) chapt1, chapt2 < sectiona
B) cp chapt1 sectiona, cp chapt2 sectiona
C) cat chapt1 chapt2 > sectiona
D) ls chapt1, chapt2, sectiona
Q2) The C shell is usually available as an unbundled product.
A)True
B)False
Q3) The ____ command allows the programmer to synchronize process execution by suspending the parent until the child is finished.
A) exec
B) fork
C) wait
D) pause
Q4) The system command, split, splits a program into two copies, which are both running from the statement after the command.
A)True
B)False
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Chapter 14: Ms-Dos Operating System
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Q1) Every time the CPU is powered up or is reset, the commands in the ____ file are executed automatically by the system.
A) AUTOEXEC.BAT
B) INIT.COM
C) INIT.EXE
D) COMMAND.COM
Q2) When the user is working in a directory or subdirectory, it is called the working directory and any file in that directory can be accessed by its relative name.
A)True
B)False
Q3) The DOS kernel is read into memory at initialization time from the ____ file residing in the boot disk.
A) MSDOS.SYS
B) MSKernel.DOS
C) DOSK.COM
D) COMMAND.COM
Q4) The layer at the bottom of MS-DOS is BIOS (Basic Input/Output System).
A)True
B)False
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Chapter 15: Windows Operating Systems
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Q1) A driver object can only have one device connected to it.
A)True
B)False
Q2) In 1999, Microsoft changed the operating system's name from Windows NT to Windows 2000.
A)True
B)False
Q3) The Windows Task Manager is opened by pressing and holding the ____ keys.
A) Ctrl, W, and T
B) Ctrl, Alt, and Esc
C) Ctrl, Alt, and Delete
D) Alt and Tab
Q4) The first widely adopted Windows product, ____, featured a standardized look and feel, similar to the one made popular by Apple's Macintosh computer.
A) Windows 1.0
B) Windows 3.0
C) Windows 3.1
D) Windows for Workgroups
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Chapter 16: Linux Operating System
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Q1) Linux has system calls that change the size of the process data segment, either by expanding it to accommodate extra data values or reducing it when certain values positioned at the end of the data segment are no longer needed.
A)True
B)False
Q2) A file containing data or programs belonging to users is known as a(n) ____.
A) symbolic link
B) ordinary file
C) special file
D) named pipe
Q3) Linux brought the speed, efficiency, and flexibility of UNIX to a small computer environment.
A)True
B)False
Q4) Linux was developed by Dennis Ritchie, who wanted to create an operating system to maximize the limited capabilities of the Intel 80386 microprocessor.
A)True
B)False
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