ITF+ Quiz Part 38

What is the purpose of implementing fault tolerance in a computer system?

• To increase the speed of the system

• To protect against losing access when a component fails

• To reduce the cost of the system

• To improve the user interface

Answer explanation

To protect against losing access when a component fails

What does redundancy in a computer system ensure?

• Increased processing speed

• The service can failover to the backup with minimum interruption

• Reduced power consumption

• Enhanced graphical performance

Answer explanation

Redundancy in a computer system ensures that the service can failover to the backup with minimum interruption.

Which RAID level is known as disk mirroring?

• RAID 0

• RAID 1

• RAID 5

• RAID 10

Answer explanation

RAID 1 is known as disk mirroring where data is duplicated on two separate disks for redundancy and fault tolerance.

How many disks are required at minimum for RAID 5?

• 1

• 2

• 3

• 4

Answer explanation

RAID 5 requires a minimum of 3 disks for data striping and parity information across all disks.

What is the main function of parity information in RAID 5?

• To increase the speed of data access

• To determine the missing data in case of a single disk failure

• To reduce the cost of storage

• To enhance the graphical performance

Answer explanation

To determine the missing data in case of a single disk failure

What is a key difference between RAID 1 and RAID 5?

• RAID 1 uses striping with parity, RAID 5 uses disk mirroring

• RAID 1 uses disk mirroring, RAID 5 uses striping with parity

• RAID 1 requires at least three disks, RAID 5 requires two disks

• RAID 1 is faster than RAID 5

Answer explanation

RAID 1 uses disk mirroring, RAID 5 uses striping with parity

What is a limitation of RAID as mentioned in the text?

• It is not a substitute for backups

• It increases the cost of the system

• It reduces the speed of the system

• It is difficult to implement

Answer explanation

It is not a substitute for backups

What is the purpose of having multiple network cards in a server?

• To increase the server's processing power

• To provide fault tolerance and load balancing

• To reduce the server's power consumption

• To enhance the server's storage capacity

Answer explanation

To provide fault tolerance and load balancing

What is the main benefit of redundant connections in network cabling?

• To increase the speed of the network

• To ensure the network remains operational during a failure

• To reduce the cost of network maintenance

• To simplify the network design

Answer explanation

To ensure the network remains operational during a failure

What does power redundancy ensure in network appliances and servers?

• Increased processing speed

• Protection against electrical events and uninterrupted operation

• Reduced power consumption

• Enhanced data storage capacity

Answer explanation

Power redundancy ensures protection against electrical events and uninterrupted operation in network appliances and servers.