A CPU with a fetch-decode-execute-store cycle with full pipelining runs 6 sequential instructions in how many'ticks until completed?'

6+5

Correct!

6+3

4+4+4

12

Which does NOT characterise mobile devices?

Small form factor

Low bandwidth

Correct!

Low portability

Low connection reliability

A CPU with a speed of 3GHz …

Correct!

has a clock that 'ticks' 3 billion times a second

waits 3 billionth of a second between instructions

can go into a loop cycling 3 billion times a second

executes 3 billion different instructions a second

Compared to a 32 bit CPU, running at the same clock speed, a 64 bit CPU …

can access twice as much memory

can take twice as long to read memory

can wait half as long between instructions

Correct!

can fetch twice as many bits of memory at the same time

Which of these is NOT true?

PCIe's are "Routed by a hub acting as a crossbar switch"

PCIe uses a point to point topology

PCI uses a shared bus topology

Correct!

PCI connectors cannot be connected to a PCH

Suppose you had a 21U rack frame, and a collection of 3U and 5U cards. Which combination of each would NOT work?

2 3Us and 2 5Us

3 3Us and 2 5Us

2 3Us and 3 5Us

Correct!

3 3Us and 3 5Us

'Why is the PCH a hub and not a switch or router?

Correct answer

It is a hub because all devices can 'see' each other

It is a hub because all devices are connected to it

You Answered

It is not a router because it is not connected to a network

It is not a switch because that would require separate subnets

A CPU does many things, but which of the following does it NOT do?

Correct!

Performs quantum operations

Performs input/output operations

Performs arithmetic operations

Performs logical operations

Static RAM is better than dynamic RAM because …

it is external

Correct!

it keeps its memory without power

it doesn't move whereas dynamic memory does

it is cheaper

Which of these is false about BYOD (bring your own device) with respect to the organisation ?

BYOD is good because you can choose your own device

You Answered

BYOD is good because it is cheaper

BYOD is bad because the organisation cannot impose its security rules upon you

Correct answer

BYOD is good because the organisation cannot impose its security rules upon you