General

Question 1

Contiguous files are created by

Answer 1

Contiguous files are files which have not been broken into pieces before moving. Not sure…

Question 2

What is the expected data rate of 2 usb interfaces

Answer 2

usb 1 low speed 1.5 mpbs high 12 mpbs

usb 2 480mpbs

Question 3

A laser printer starts to print smudgy vertical lines on the paper as well as the desired images is suffering from..

Answer 3

ask ed.

Question 4

Default subnet masks ranges.

Answer 4

class - a 1-126
clas b 128-191
clas c. 192-223

Question 5

What is the purpose of a driver

Answer 5

A driver provides software interface to hardware devices. Enabling operating systems to access hardware functions without needed to know precise details.

Question 6

The dos command ‘ipconfig/all’

Answer 6

receals the current network configuration of the pc.

Question 7

You never attempt to service this

Answer 7

Hard drive

Question 8

a site licence allows the user to.

Answer 8

Install software within several computers on a website within a specific site.

Question 9

Ntfs filing sustem cannot be used by

Answer 9

Windows 95

Question 10

Which chip sots between the cpu and the ram on a modern motherboard

Answer 10

Northbridge

Question 11

On which interface would you not expect to find a disc drive in a typical pc architecture

Answer 11

PCI

Question 12

Agp stands for

Answer 12

Accelerated graphics port

Question 13

main differences between FAT and NTFS

Answer 13

ntfs can recover disk-related errors automatically, fat32 cannot
ntfs is better for larger hard disks.
better security because you can use permissions and encryption to restrict access to files. so this may be good for businesses and offices.

Fat33 doesn’t have this security, so if you have a fat32 permission any user you has access to your computer hand read any file on it. fat32 also has size limitation. No partition fan be greater than 32gb and I cannot store a file larger than 4gb.

Question 14

main differences between FAT and NTFS

Answer 14

ntfs can recover disk-related errors automatically, fat32 cannot
ntfs is better for larger hard disks.
better security because you can use permissions and encryption to restrict access to files. so this may be good for businesses and offices.

Fat32 doesn’t have this security, so if you have a fat32 permission any user you has access to your computer hand read any file on it. fat32 also has size limitation. No partition fan be greater than 32gb and I cannot store a file larger than 4gb.

Question 15

pci stands for

Answer 15

peripheral component interconnect.

Question 16

Wireless keyboard; what protocol?

Answer 16

bluetooth.

Question 17

This memory type does not fit in a laptop.

Answer 17

240 pin fully buffered dimm

Question 18

What is the purpose of a driver?

Answer 18

Tells the operating system how to interact with the device

Question 19

Smallest storage access init on an IDE hard drive

Answer 19

Sector

Question 20

A laptop keeps losing time and date

Answer 20

Faulty cmos battery

Question 21

What is the laser printing process

Answer 21

Cleaning, charging, writing, developing, transferring, fusing.

Question 22

default subnet mask for a class b ip address.

Answer 22

255.255.0.0

Question 23

Quickest way to check anti-virus is running?

Answer 23

Check notification area

Question 24

What expansion bus types do most modern motherboards support

Answer 24

PCI-E PCI AND AGP

Question 25

Which of the following interfaces won’t be in a disc drive in a oc.

Answer 25

PCI

Question 26

this file extension does not apply to a library file used by an executable program

Answer 26

.exe

Question 27

The NTFS filing cannot be used by

Answer 27

Windows 95

Question 28

What can cause chip creep

Answer 28

Heating and cooling of the cpu

Question 29

Contiguous files created buy

Answer 29

Disk defragmeter

Question 30

Which of the following storage units on a hard drive is the largest

Answer 30

Partition

Question 31

Laser printer with prints smudgy white lines suffers from

Answer 31

Dirty drum

Question 32

Desktop dvd drive is faulty. Resolve?

Answer 32

Use a can of compressed air and blow out dust from the drive

Question 33

Which of the following will you need to remove a hard disk?

Answer 33

screwdriver

Question 34

How to get a quick overall view of the system process such as cpu and available ram?

Answer 34

Task manager

Question 35

Zip in relation to a cpu stands for..

Answer 35

Zero insertion force

Question 36

What utility can be used to test remote compute connectivity

Answer 36

Ping

Question 37

Beep code.

Answer 37

Impossible to know without referring to motherboard manual.

Question 38

NTLDR is missing. press any key to restart. Resolve?

Answer 38

Boot the computer using the OS CD. Select recovery console option. Restore the file by copying it from the operating system installation cd.

Question 39

iso layer responsible for handling ip address

Answer 39

network layer

Question 40

What interrupt is traditionally used by real time clock

Answer 40

IIRQ8

Question 41

Connecting a second serial ata disk to a system. How to make sure the new disk is recognised by the computer and cooperates with the first disk.

Answer 41

Nothing. Sata disks don’t have jumper settings.

Question 42

A newly installed driver for my network card makes it not work. Resolve?

Answer 42

Driver rollback.

Question 43

printers. how they work

Answer 43

electro graphic laser. it makes a laser beam scan back and forth accriss a drum inside the printer, building up a pattern of static electricity. The static electricity attracts onto the page ink called toner. Then the fuser units bonds the toner to the paper.
dot matrix. computer printing which uses a print head that moves back and forth or up and down. It prints by impacting the page and striking an ink-soaked cloth ribbon against the paper, like on a type writer.
bubble jet. it drops small droplets of ink onto paper to create an image. the dots are very small and precise. the bubble is created by tiny resistors that create heat to vaporise ink to create a bubble. this then causes a droplet to form and eject from the print head.
dye sublimation. uses heat tk transfer dye onto materials such as plastic card, paper and fabric.

Question 44

An ethernet switch will give superior performance to an ethernet hub in all lan situations. Agree or disagree? What are the differences between a hub and a switch in an ethernet lan.

Answer 44

Disagree. The collision domain is only 2 of a switch whereas for a hub all the hosts within the domain share the same collision domain. Collisions slow the system, especially when they are uneccessary. If the traffic is light a hib may deliver the same performance but in high traffic situations such as a switch will almost always perform better.

a hub is a networking device that allows one to connect multiple pcs to a single network. hubs are based on ethernet, firewire or usb connections.

a switch is a control unit that turns the flow of electricity on or off in a circuit. it may also be used to route information patterns in streaming electronic data sent over network.

a switch performs better than a hub. if the network involves four or more computers then a switch is better suited. especially in high traffic situations such as when heavy music sharing with .flac or heavy duty multiplayer games.

hubs operate using a broadcast model and switches operate using a virtual circuit model. this means that when two computers within a hub network need to communicate, they pass through every computer within the network whereas switches are capable determining the destination of each computer and communicating directly. therefore on busy networks switches perform better.

hub costs a lot less than a switch generally being less than 20£.

Question 45

describe computer viruses. what are they? there sources? how to determine their presence? how to rid of them.

Answer 45

a computer virus is a self-replicating code planted illegally in a computer to cause harm or steal data through various methods.

Also in emails. Take Internet off until you clean it so it doesn’t spread.

Viruses usually contain keyloggers that record keystrokes in order to gain access to passwords and gain access to bank accounts.

In order to avoid viruses, you’d need a reputable anti-virus program such as avast. These work by being able
detect viruses within the computer and ensuring that they are deleted. They also offer preventative measures t scanning files as they are downloaded for potential viruses. In order for the anti-virus software to work best, it needs to be updated through avast regularly.

fault logging.
virus checking.
clear policies and communication. good security practice.
creating backups before commencing operations.

Question 45

How can a business which depends heavily on its small cooperate network safeguard its data?

Answer 45

Backup. Regularly backing up data is important as if a computer hard drive crashes and data is lost or if a virus deletes some data within the pc if a backup of that data has been made and put on an external harddrive then It will be safe. There are many programs that habitually backup your data safely such as Timemachine on Mac computers.
Encryption. Is the practice of encoding and decoding data. When data has been encrypted it means that an algorithm has been applied so the data is jumbled and cannot be read. Only a decryptions key can make the data realise its original form. Encryption can then secure sensitive data from threats such as malware and unauthorised access. This especially important if business hold sensitive data as without proof of encryption methods when data is lost business could be in ground to be sued based on the data protection act.

Another encryption methods exists within browsers. HTTps ensures data will be transferred within a secure protocol.

Antivirus.They checks within a list of known viruses within a pc, it looks for any worms and malware that could affect the data or accessibility of the pc. It also performs a heuristic check which cross-references common behaviours of virus to any similar instances of behaviours within your pc. This way, new unknown viruses can be found.

Anti spyware. These remove and block spyware. These make changes to computers setting without any alerts on the PC which could cause it to run slower of affect security setting on certain programs. Anti-spyware combats this by having a list of known spyware and finding them throughout the computer and also by scanning all incoming network data for this too.

Firewall. This is a system designed to prevent unauthorised access to or from private networks. This would be very useful for networks with multiple computers as it prevents users from accessing unauthorised Internet sites based on specified security criteria. A firewall technique such as a proxy server can also be implemented for more control intercepting messages entering and leaving the network.

Question 46

What information is needed to replace or upgrade ram?

Answer 46

The type of memory such as the manufacturer in certain cases l
Ddr2,3, sdram, speed, max memory capacity of the machine, how the memory is fitted? do they need to match. How would you change the ram?

Which ddr is important due to how it will fit in the ram slots within the motherboard. Speed is also important as if you choose a ram speed that is more than your pc it will be clocked down or may not work at all.

You will need an esd strap, an electro static discharge strap, unplugging tbe machine, dismantling the case, finding and removing the memory, checking it has been recognised in bios, successful booting and reporting in windows.

Question 47

What is post and how can it be used to diagnose a problem?

Answer 47

This stands for power on self test.It is a series of basic hardware testing routines that are usually burnt into the Bioss chip by the manufacturer. These routines include cpu and ram checks, keyboard checks, graphic card checks. If either of those fails the user wouldn’t be able to interact with the system. So POST enables the user to realise why their system has failed. This is done through beep codes, each manufacturer has their own, but to give an example. One manufacturer may determine a long continuous beep to mean that the cpu has failed, 3 short beeps could mean the graphic card has failed.

Question 48

client/server and peer to peer describe networking architecture.

Answer 48

peer to peer has no central server. it shares its file equally with others. there is no central storage of authentication of users.

there are separate dedicated servers and clients in a client/server network. through client workstations, users can access most files stored in the server. the server will determine which users can access the filed on the network.

peer to peer is usually installed in homes or small businesses. it can support up to ten clients before it suffers performance problems.

peer to peer isn’t vert secure. the computer that contains the shared resources does check who is accessing them. so anyone with the password which can easily get into the wrong hands due to someone on the network mismanaging it.

client server have centralised security datavseses thag control access to shared resources kn servers.

peer to peer is much harder to backup.
client server is a lot more costly.
client server would be a lot better but would need a qualified person to manage it. if you are a small business who share a printer and occasional files. peer to peer would be good.

Question 49

Your friend has asked for help with her system. The system will not boot. The power led’s are lit on both the base unit and the monitor. There is a few seconds of silence then the machine emits 1 long and 8 short beeps but nothing appears on the screen. You know that her system has the AMI BIOS chip. Advise your friend on what is happening, the likely cause of the problem and steps which could be taken to further diagnose or resolve the problem.

Answer 49

The sound that is being made is the motherboard communicating the boot-up problem to the user. Each motherboard manufactuer will have differing beep codes. As we know the the subject’s system has an AMI Bios chip. We can look up the beep codes. This tells us that the display/retrace test has failed. This means that the system is having trouble displaying anything, this can be narrowed down to the graphics card. It appears that the subject’s graphic card is faulty. Firstly, we can take apart her system and ensure that the video card is inserted properly as the problem could be that it was knocked out the slot from bad handling of the computer. However, this beep code does not solely refer to the graphics card. When a computer boots, it runs a POST test that ensures all the components within the system are running properly. This means that the problem could be any component. With this in mind, I would question the subject of any recent hardware changes she would have made. This would narrow down the component in question. If she has not purchased any hardware, then we will need to test each component. This will be a little more difficult without the computer booting and there are software which test computer hardware and firmware as the only option is swapping out different components until finding a component which makes the computer run. I would first swap out the video card, then the RAM and go on from there as I believe that they are the most likely to become faulty.

Question 50

operating system comparison.

differences?

Answer 50

windows 7.
windows 8

The difference in these and the usability heavily depend on the user. Has the user had experience with windows 8 before, the metro interface means that there is another learning curve the user has to learn. If the user doesn’t welcome this change they could become frustrated. Windows 8 has a faster boot time and superior task manager and security features, it also has native support for usb3x 3d, iso and img. Windows 7 interface is better as it is more intuitive it follows the conventions of older models.

Windows 8 has been hit and miss. windows 7 it may be better suited towards businesses where there is a mix of technical expertise ranging from low the high as it is easy and recognisable, windows 8 would be great for personal use