ADVANCED COMPUTER HARDWARE 2

Question 1

Types of ROM?

Answer 1

1. ROM-Info written onto a ROM chip when it is manufactured
2. Programmable ROM-Info written after it is manufactured. Cant be erased and can only be programmed once
3. Erasable PROM- non-volatile but can be erased by exposing it to strong UV light
4. Electronically EPROM- Info is written after manufacture and can be erased without removing it from the device

Question 2

Types of RAM?

Answer 2

1. Dynamic RAM- Discharges energy so it must me constantly refreshed with pulses of electricity in order to maintain the stored data in the chip
2. Static RAM- requires constant power to function. Faster than DRAM
3. Synchronous Dynamic RAM- Able to process overlapping instructions in parallel. Higher transfer rates
4. Double Data Rate SDRAM- Twice as fast as SDRAM Family:DDR2 DDR3 DDR4(fastest)

Question 3

Examples of legacy ports?

Answer 3

Serial-connecting various peripherals eg modems and printers
Parallel- Mostly printers 
Game- Joy stick input
PS/2-keyboard-Purple; mouse-green
Audio ports- stereo systems and speakers
* see power point for images

Question 4

Examples of Graphic ports?

Answer 4

VGA- Analog graphic port
DVI-Transmitting uncompressed digital video
HDMI- Same as DVI +digital audio and control signals
Display port- replaces DVI and VGA on monitors while including high band width video and audio signals
* see power point for images

Question 5

USB Cable types?

Answer 5

A-Typical rectangular one
Mini USB-Rectangular, small indentation on each side
Micro USB-Smart phones-2 corners pushed in
USB Type B-Square with extra notch on top-printers
USB Type C- rectangular with four rounded corners
Lightning-Apple 8 pin

Question 6

What is the difference between SATA data cable and SATA power cable

Answer 6

data does not provide power

*connected from the SATA port on the motherboard to an internal storage device

Question 7

Types of connectors for UTP(Unshielded Twisted Pairing)

Answer 7

RJ-45-Ethernet

RJ-11- networking

Question 8

REASONS TO UPGRADE:

Motherboard

Answer 8

• User Requirements change
• Upgraded software packages require new hardware
• New hardware offers enhanced performance
• Replacing Motherboard may call for a replacement of the CPU, Heat sink and fan assembly and RAM

Question 9

REASONS TO UPGRADE:

Hard drive

Answer 9

• Increase Storage space
• Increase Hard Drive Speed
• Install a second operating system
• Store the system swap file
• Provide fault tolerance
• Back up original

Question 10

REASONS TO UPGRADE:

peripherals

Answer 10

• Shift to ergonomic design
• Include special tasks on a keyboard eg a second language
• To accommodate users with disability

Question 11

Briefly discuss why an Intel Core i3 is better than an Intel Pentium. (Assume that each of
the listed processors have 2 CPUs).

Answer 11

the Pentium only has 3MB of L3 cache memory while the i3 has 4MB. More cache directly translates to lesser main memory accesses, which is much slower compared to cache memory.

Question 12

Name one characteristic about mobile devices.

Answer 12

A battery that powers the device for several hours