OPERATING SYSTEMS FOR COMPUTERS
COMPUTER OPERATING SYSTEMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Hardware very cheap
|
|
|
Human very expensive
|
|
|
Requires secure memory
|
|
|
Client/server architectures
|
Detailed explanation-1: -Distributed systems have a single central node where all of the processing is done. Distributed systems can take multiple requests at the same time. All the files are stored as is in the same system.
Detailed explanation-2: - Computer and network security address three requirements: Confidentiality: Requires that the data only be accessible for reading by authorized parties. Integrity: Requires that only authorized parties can modify data. Availability: Requires that data are available to authorized parties.
Detailed explanation-3: -What is not true about a distributed system? Explanation: None.
Detailed explanation-4: -Security in distributed systems introduces two specific concerns that centralized systems do not have. The first is the use of a network where contents may be seen by other, possibly malicious, parties. The second is the use of servers.