Computer Systems

When staff of a company use tablets and desktops to connect to the office network what communication channels are they using for synchronization?

• Simplex and Duplex
• Half-Duplex and Duplex
• Half Duplex and Simplex
• Simplex and Point-to-Point

What are the business benefits of synchronizing data between tablets and the office network?

• If not it would be possible to make promises that cannot be delivered
• Working directly with the client away from the office would improve productivity
• Because files are stored centrally which means that clients can be supported even if a member of staff is absent
• All of the reasons given

When using a touch screen what is the order of data exchange?

• Screen, Digitiser, Screen
• Digitiser, CPU, Screen
• Screen, CPU, Digitiser
• Digitiser, Screen, CPU

Why do SSD's not need defragmenting?

• Because data does not have to be grouped together to be faster
• Because data does not have to be groupd together to save space
• Files are not fragmented on an SSD
• If defragmenting  they will become slow

What are the moving parts in a hard drive

• optical disk and read/write head
• the disk and cables
• Magnetic disk and read/write head
• The motor and the spindle

What makes SSD more suitable for mobile device than HDD

• Capacity
• Weight and capacity
• Cost
• Weight and dimensions

What does the convergence in size reduction imply for mobile devices?

• They are more portable
• They are cheaper
• Inclusion of other technologies
• They use less power

What does cache in a hard drive facilitate?

• Deliver a message to the user
• Work as a buffer between fast and slow components
• Gives you money back if you're thrifty
• There is no cache on a HDD

Name 1 reason when chossing a hard drive you would choose the biggest?

• Cost per byte is lower
• All reasons given
• Larger capacity will be less likely filled up and makes drive faster
• Larger drives spin round faster and this reduces seek time

What is the main technology used in RAID 1?

• Mirroring
• Striping
• Error correction
• All 3