BTec Digital Information Technology
Level 2 (GCSE) Exam||Latest Exam
With Detailed Questions And Correct
Answers||Graded A+
Ad hoc Networks -CORRECT ANSWER - type of wireless network
- does not depend on cables
- provides organisations employees with internet outside the workplace
Open Wi-Fi -CORRECT ANSWER - available in public places
- provide Wi-Fi access to anyone
- may need to register or some require a network key
- unsecure
Network Key -CORRECT ANSWER - code, provided only to authorised network users
Tethering -CORRECT ANSWER - share internet connectivity with a device that doesn't
have internet access
Personal Hotspot -CORRECT ANSWER - simple to set up using smartphones
tethering facility
- several devices can be tethered
- wireless, via bluetooth or USB cable
Benefits of Ad hoc Networks -CORRECT ANSWER - provide access to internet at all
times in most locations
- simple to set up
- allow users to work in places other than workplace
- open wifi- users connect to internet without using data
- personal Hotspots- provide internet to one more devices
Security Issues -CORRECT ANSWER - open Wi-Fi- no encryption- data sent and
received not secure so easily intercepted, if encrypted it is normally weak so easily
hacked
- websites using https are normally secure but emails are sent in plain text so not
secure.
- Ad hoc networks- secure enough to send emails and use internet, less vulnerable to
eavesdropping, secure encryption keys should be used
,Performance Issues -CORRECT ANSWER - tethering or personal hotspots- internet
connection is made via mobile data network. If several devices are tethered data
transfer will be slow.
- Public Wi-Fi- slow if lots of people are using it
- Ad hoc Network- limited range- any device using it needs to be close to Wi-Fi
transmitters (signal maybe weak, difficult to connect to or lose connection)
Network Availability Issues -CORRECT ANSWER - Blackspots- buildings, tunnels,
geographic feature- cause areas where network connection is poor or non-existent or
block it all together
- Mobile Network coverage- high-speed networks are available in most cities but there
are other locations where signal doesn't reach. Differences between service providers.
- Available Infrastructure- streaming requires large amounts of data sent continuously
over the network. This places a strain on network infrastructure
- Developing countries- lack money to invest in network and difficulty managing
resources to set up advanced network
- Rural Areas- high cost to Install is coverage may be poor
Uses of cloud storage -CORRECT ANSWER - files, folders stored on remote servers
(the cloud)
- upload files from any device
- access files- can be downloaded from the cloud to the device(s)
- give user access to other users so they can access them to
Access Rights -CORRECT ANSWER - files stored in the cloud can be shared by
employees working in different locations
- user who creates file will control access rights- allow others to edit or only have read-
only access
- employees with access rights may require user name/password
Availability -CORRECT ANSWER - cloud storage accessed on any device, 24/7, any
location (with internet)
- providers may synchronise files so data is available even when user has no internet
Synchronisation -CORRECT ANSWER - store copies of files
- allows users to open files when internet is not available
- when user edits files system software synchronises files in the cloud to all devices
ensuring content is the same
- Organisations combine use of apps/files on their own systems/employees with
apps/files being stored on the cloud. Employees can work flexibly on different devices
both in/out workplace. For cloud and traditional systems to work smoothly apps/files
need to be synchronised regularly.
Scalability -CORRECT ANSWER - different users require different amounts of cloud
storage
- users can rent additional space or reduce capacity
, -SCALABILITY
Benefits of Cloud Storage -CORRECT ANSWER - access through any device with
internet connection
- some providers keep copies on users' device so accessible without internet
- 24/7/365
- access files wherever
- employees can work on files at the same time
- automatically synchronised across all devices
- store backups of a file so if device is damaged/lost, backups can be easily received
from remote servers
- scalability- control costs, have the capacity which meets needs
- provider responsible for purchase, set up, maintenance of servers.
- users pay cost of storage space they rent
- providers may offer small amount of space for free
Drawbacks of Cloud Storage -CORRECT ANSWER - require you to have internet
connection
- slow/poor internet connection- reduce speed of files being uploaded/downloaded
-delay in synchronisation if internet is slow/unavailable
- free amount of storage- often limited, more data stored more expensive
- users have no control over set up/management of servers their data is stored on.
- potential security issues
Online applications -CORRECT ANSWER - only the user using this device can access
these
- cloud computing- range of applications, alternative way to access
- online applications run on remote servers in the cloud
- users can access/share applications using web-based server
Benefits of using cloud computing applications -CORRECT ANSWER - provider
maintains/updates- organisation not responsible for updating/maintaining software
- installation not required- saves technician time, local computers require less
processing/storage capacity- organisation can buy/rent less expensive machines
- cost effective- pays for service it requires and can scale up, software licenses not
required
- employees run the same version of software- consistency of file types/features,
access/use files created by others from any location with internet, less training/support.
File sharing -CORRECT ANSWER - online applications allow employees to work on a
document at the same time.
- colleagues can edit which can be seen (accepted/declined) by others
Collaboration tools -CORRECT ANSWER - comments- ask questions/make
suggestions, others can see and reply
Level 2 (GCSE) Exam||Latest Exam
With Detailed Questions And Correct
Answers||Graded A+
Ad hoc Networks -CORRECT ANSWER - type of wireless network
- does not depend on cables
- provides organisations employees with internet outside the workplace
Open Wi-Fi -CORRECT ANSWER - available in public places
- provide Wi-Fi access to anyone
- may need to register or some require a network key
- unsecure
Network Key -CORRECT ANSWER - code, provided only to authorised network users
Tethering -CORRECT ANSWER - share internet connectivity with a device that doesn't
have internet access
Personal Hotspot -CORRECT ANSWER - simple to set up using smartphones
tethering facility
- several devices can be tethered
- wireless, via bluetooth or USB cable
Benefits of Ad hoc Networks -CORRECT ANSWER - provide access to internet at all
times in most locations
- simple to set up
- allow users to work in places other than workplace
- open wifi- users connect to internet without using data
- personal Hotspots- provide internet to one more devices
Security Issues -CORRECT ANSWER - open Wi-Fi- no encryption- data sent and
received not secure so easily intercepted, if encrypted it is normally weak so easily
hacked
- websites using https are normally secure but emails are sent in plain text so not
secure.
- Ad hoc networks- secure enough to send emails and use internet, less vulnerable to
eavesdropping, secure encryption keys should be used
,Performance Issues -CORRECT ANSWER - tethering or personal hotspots- internet
connection is made via mobile data network. If several devices are tethered data
transfer will be slow.
- Public Wi-Fi- slow if lots of people are using it
- Ad hoc Network- limited range- any device using it needs to be close to Wi-Fi
transmitters (signal maybe weak, difficult to connect to or lose connection)
Network Availability Issues -CORRECT ANSWER - Blackspots- buildings, tunnels,
geographic feature- cause areas where network connection is poor or non-existent or
block it all together
- Mobile Network coverage- high-speed networks are available in most cities but there
are other locations where signal doesn't reach. Differences between service providers.
- Available Infrastructure- streaming requires large amounts of data sent continuously
over the network. This places a strain on network infrastructure
- Developing countries- lack money to invest in network and difficulty managing
resources to set up advanced network
- Rural Areas- high cost to Install is coverage may be poor
Uses of cloud storage -CORRECT ANSWER - files, folders stored on remote servers
(the cloud)
- upload files from any device
- access files- can be downloaded from the cloud to the device(s)
- give user access to other users so they can access them to
Access Rights -CORRECT ANSWER - files stored in the cloud can be shared by
employees working in different locations
- user who creates file will control access rights- allow others to edit or only have read-
only access
- employees with access rights may require user name/password
Availability -CORRECT ANSWER - cloud storage accessed on any device, 24/7, any
location (with internet)
- providers may synchronise files so data is available even when user has no internet
Synchronisation -CORRECT ANSWER - store copies of files
- allows users to open files when internet is not available
- when user edits files system software synchronises files in the cloud to all devices
ensuring content is the same
- Organisations combine use of apps/files on their own systems/employees with
apps/files being stored on the cloud. Employees can work flexibly on different devices
both in/out workplace. For cloud and traditional systems to work smoothly apps/files
need to be synchronised regularly.
Scalability -CORRECT ANSWER - different users require different amounts of cloud
storage
- users can rent additional space or reduce capacity
, -SCALABILITY
Benefits of Cloud Storage -CORRECT ANSWER - access through any device with
internet connection
- some providers keep copies on users' device so accessible without internet
- 24/7/365
- access files wherever
- employees can work on files at the same time
- automatically synchronised across all devices
- store backups of a file so if device is damaged/lost, backups can be easily received
from remote servers
- scalability- control costs, have the capacity which meets needs
- provider responsible for purchase, set up, maintenance of servers.
- users pay cost of storage space they rent
- providers may offer small amount of space for free
Drawbacks of Cloud Storage -CORRECT ANSWER - require you to have internet
connection
- slow/poor internet connection- reduce speed of files being uploaded/downloaded
-delay in synchronisation if internet is slow/unavailable
- free amount of storage- often limited, more data stored more expensive
- users have no control over set up/management of servers their data is stored on.
- potential security issues
Online applications -CORRECT ANSWER - only the user using this device can access
these
- cloud computing- range of applications, alternative way to access
- online applications run on remote servers in the cloud
- users can access/share applications using web-based server
Benefits of using cloud computing applications -CORRECT ANSWER - provider
maintains/updates- organisation not responsible for updating/maintaining software
- installation not required- saves technician time, local computers require less
processing/storage capacity- organisation can buy/rent less expensive machines
- cost effective- pays for service it requires and can scale up, software licenses not
required
- employees run the same version of software- consistency of file types/features,
access/use files created by others from any location with internet, less training/support.
File sharing -CORRECT ANSWER - online applications allow employees to work on a
document at the same time.
- colleagues can edit which can be seen (accepted/declined) by others
Collaboration tools -CORRECT ANSWER - comments- ask questions/make
suggestions, others can see and reply
