Operating System Subcategories

Memory Management Swapping 1	Process Scheduling Queue
Virtual Memory Page Replacement Algorithms 1	Linux
Cpu Scheduling	Memory Management
Computer Fundamentals	Cpu Scheduling Benefits
Threads Signal Handling	Threads Ult Klt
Distributed Operating System	Basics
Operating System	Processes
Cpu Scheduling Algorithms 1	Cpu Scheduling Algorithms 2
Deadlock	Deadlock Avoidance
Memory Management Swapping 2	Memory Allocation 1
Secondary Storage	Memory Management Paging 1
Memory Management Paging 2	Rtos
Multimedia System Cpu Disk Scheduling	Security Intrusion Detection
Virtual Memory Thrashing	File System Interface Access Methods 1
File System Interface Directory Structure 1	File System Interface Directory Structure 2
File System Interface Mounting Sharing	File System Allocation Methods 1
Disk Scheduling 2	Disk Management
Classic Sync Problems	Semaphores 1
Process Creation	Multimedia System Network Management
Semaphores 2	Cpu Scheduling 2
Application Io Interface 1	Inter Process Communication
Process Synchronization	Multimedia System Compression 1
Network File System 1	Disk Scheduling 1
Mass Storage Raid 1	File System 1
Communication Systems Bandwidth Transmission Medium	Security Cryptography
Two Port Network	Process Rpc
Virtual Memory Page Replacement Algorithms 2	Virtual Memory Frame Allocation
Network File System 2	File System Allocation Methods 2
File System Allocation Methods 3	Process Control Block
Process Structures	Critical Section Problem
Process Sync Monitors	Atomic Transactions
Deadlock Recovery	Memory Allocation 2
Memory Management Segmentation	Application Io Interface 2
Kernel Io Subsystems	Multimedia System Compression 2
Multimedia System Compression 3	Security User Authentication
Security Program System Threats	Security System Facility
Threads Fork Exec	Threads Cancellation
Threads Pools	Multi Threading Models
Virtual Memory Demand Paging	Virtual Memory
File System Concepts	File System Implementation
File System Interface Access Methods 2	File System Recovery
Io Subsystem	Swap Space Management
Mass Storage Raid 2	Mass Storage Tertiary Storage
Protection Concepts	Protection Access Matrix
Security	Protection Memory Protection
Protection Revocation Access Rights	Network Structure Topology
Robustness	Distributed File System
Distributed Synchronization	Deadlock Prevention
Deadlock Detection	Threads
File System Interface Protection	File System Free Space Performance

What is not an important part of security protection?

A. Large amount of ram to support antivirus
B. Strong passwords
C. Audit log periodically
D. Scan for unauthorized programs in system directories

Explanation: RAM has no effect on security of a system. System’s protection remains unchanged in increasing or decreasing amount of RAM.

What is used to protect network from outside internet access?

A. A trusted antivirus
B. 24 hours scanning for virus
C. Firewall to separate trusted and untrusted network
D. Deny users access to websites which can potentially cause security leak

Explanation: Firewall create a protective barrier to secure internal network. An antivirus can only detect harmful viruses but cannot stop illegal access by remote attacker.

What is the best practice in the firewall domain environment?

A. Create two domain trusted and untrusted domain
B. Create strong policy in firewall to support different types of users
C. Create a demilitarized zone
D. Create two dmz zones with one untrusted domain

Explanation: All live servers or workstations are kept in a separate zone than inside and outside to enhance protection.

Which direction access cannot happen using DMZ zone by default?

A. Company computer to dmz
B. Internet to dmz
C. Internet to company computer
D. Company computer to internet

Explanation: Connection from internet is never allowed to directly access internal PCs but is routed through DMZ zone to prevent attacks.

What are the two features of a tripwire file system?

A. It is a tool to monitor file systems
B. It is used to automatically take corrective action
C. It is used to secure unix system
D. None of the mentioned

How do viruses avoid basic pattern match of antivirus?

A. They are encrypted
B. They act with special permissions
C. They modify themselves
D. None of the mentioned

How does an antivirus of today identify viruses?

A. Previously known patterns
B. It can detect unknown patterns
C. It can take high priority to increase scanning speed
D. None of the mentioned

What is known as a sandbox?

A. It is a program which can be molded to do the desired task
B. It is a program that is controlled or emulated section of os
C. It is a special mode of antivirus
D. None of the mentioned

What is are two safe computing practices?

A. Not to open software from unknown vendors
B. Open and execute programs in admin level/root
C. Open and execute programs in presence of antivirus
D. None of the mentioned

Explanation: Disgruntled employees have in past infected the master copies of software programs to do economic harm to the company.