Chapter 1 (Quiz 2 Portion) Flashcards
Computer-System Architecture, Operating System, Computing Environments, Process Management Structure, Performance of Various Levels of Storage.
What if “Cache” is checked to determine if it has information?
1- if it has information, Information is used directly from the Cache.
2- if it doesn’t have information, Data copied to cache and used there.
What is “Multiprocessors Systems” also known as?
1- parallel systems.
2- tightly-coupled systems.
What are the advantages of the “Multiprocessors Systems” ?
1- Increased throughput.
2- Economy of scale.
3- Increased reliability.
What are the types of “Multiprocessing Systems”?
1- Asymmetric Multiprocessing (each processor is assigned a special task)
2- Symmetric Multiprocessing (each processor performs all tasks)
What is “Clustered Systems”?
Multiple systems working together sharing storage via a storage-area network.
What are the types of “Clustered Systems”?
1- Asymmetric clustering (has one machine in hot-standby mode)
2- Symmetric clustering (has multiple nodes running applications, monitoring each other)
What is the difference between “Multiprogramming” & “Timesharing” ?
1- Multiprogramming :-
- batch system.
- job scheduling.
- For mainframes.
2- Timesharing :-
- Multitasking.
- Interactive.
- For windows.
What is “Dual-mode” ?
An operation that allows OS to protect itself and other system components.
What are the modes in “Dual-mode” ?
1- User mode.
2- Kernel mode.
What does the “Mode bit” provides in Dual-mode?
1- to know which mode is running.
2- gives privilege to kernel mode.
3- it changes between the modes.
What is a process?
A program in execution.
A Program is a Passive entity. (True or False)
True.
A Process is a Active entity. (True or False)
True.
What are the resources of a Process?
1- CPU.
2- Memory.
3- Input.
4- Output.
5- Files.
6- Data.
What does Process termination require?
Reclaim of any reusable resources.
What are the OS activities for Process management?
1- Creating and deleting both user and system processes.
2- Suspending and resuming processes.
3- Providing mechanisms for process synchronization, communication and deadlock.
What are the OS activities for Memory management?
1- Keeping track of which parts of memory are currently being used and by whom.
2- Deciding which processes and data to move into and out of memory.
3- Allocating and deallocating memory space.
What are the OS activities for Storage management?
1- Creating and deleting files and directories.
2- Primitives to manipulate files and directories.
3- Mapping files onto secondary storage.
4- Backup.
What are the OS activities for Mass-Storage management?
1- Free-space management.
2- Storage allocation.
3- Disk scheduling.
What is the Typical size for Registers? its managed by? its backed by?
Typical size : < (Less than) 1 KB.
Managed by : Compiler.
Backed by : Cache.
What is the Typical size for Cache? its managed by? its backed by?
Typical size : < (Less than) 16 MB.
Managed by : Hardware.
Backed by : Main memory.
What is the Typical size for Main memory? its managed by? its backed by?
Typical size : < (Less than) 64 GB.
Managed by : OS (Operating system).
Backed by : Disk.
What is the Typical size for Solid state disk? its managed by? its backed by?
Typical size : < (Less than) 1 TB.
Managed by : OS (Operating system).
Backed by : Disk
What is the Typical size for Magnetic disk? its managed by? its backed by?
Typical size : < (Less than) 10 TB.
Managed by : OS (Operating system).
Backed by : Disk or Tape.
