Unit 2 Fundamentals of CS

What is NAS?

• network audio system
• network attached storage
• network access server
• All of these.

What is RAID?

• Risks Assumptions Issues and Decisions
• Required Analysis of Image Data
• Redundant Array of Independent Disks
• Research in Attacks Intrusions and Defenses

Which RAID variant is very fast but if one disk fails the system breaks?

• RAID 0
• RAID 5
• RAID 3
• None of these.

Which RAID variant is great for fault tolerance, but takes 2GB of space to store 1GB of data as it creates a mirror drive of the original as it saves?

• RAID 5
• RAID 0
• RAID 1
• None of these.

Which RAID variant stripes data across drives and has a dedicated parity drive to rebuild the system should a data drive fail?

• RAID 0
• RAID 5
• RAID 3
• RAID 1

Which RAID variant is fast, economical and fault tolerant? (Any disk can be swapped and rebuilt automatically if it fails, but if another goes whilst being rebuilt, then the system will break.)

• RAID 3
• RAID 0
• RAID 1
• RAID 5

Advantages of a NAS are that it offers...

• shared mass storage; backup
• fault tolerance
• manageable on-site 'cloud storage'
• All of the above.

A ________________________ is a memory buffer with the disk system or part of RAM which ideally holds data likely to be needed next (i.e. next block of data, frequently used data, or data to be written back to disk) to greatly speed up data transfer.

• NAS
• disk cache
• RAM
• solid state drive

The __________ is the central core of the operating system. Its job is to control and manage all the system hardware, software and the running of tasks on the system.

• operating system
• colonel
• kernal
• All of these

Which operating system was used on early computers where a task had to be shut down before another could be run?

• single-user single-tasking
• single-user multi-tasking
• multi-user multi-tasking
• real time