SU01: Introduction, Virtualisation

Question 1

Functions of OS

Answer 1

Efficiency as resource manager
* kernel
* special control mechanism
Ease of evolution
* new hardware, services, ability to perform fixes
Convenience
* Program execution
* Access I/O devices
* Control file access
* System access
* Error detection
* Accounting performance via statistics

Question 2

Major Achievements in OS

Answer 2

1. Process (systems)
2. Memory Management (Resource Manager)
3. Info protection and security
4. Scheduling (which process to run) and resource Management (how to manage and run)

Question 3

Uni vs Multi programming

Answer 3

less efficient vs more efficient use of processor
less main memory needed vs more main memory needed

Question 4

functions of hypervisor

Answer 4

piece of software:
Consolidation
Rapid development
Ease of Management
Faster, cheaper, easier
Scalability

Question 5

Type 1 Vs Type 2

Answer 5

• no Host OS vs Host OS
• better performance vs worse performance
• directly interact with shared hardware vs need to interact with host OS to interact with shared hardware
• more shared hardware available vs less shared hardware available (host OS consume)
• Microsoft Hyper-v VS oracle virtual Box

Question 6

Characteristics of Linux

Answer 6

• powerful & flexible Commands
• modular architecture
• (stackabale modules, dynamic linking)
• open-sourced