B1 - Connectivity Flashcards
What is the difference between Wireless and Wired
- ๐ช๐ถ๐ฟ๐ฒ๐ฑ methods of connecting devices are any method that uses physical cables to connect between devices, systems or components. Different types of connection rely on widely differing connectors, depending on what the signal or data is transmitting.
- ๐ช๐ถ๐ฟ๐ฒ๐น๐ฒ๐๐ connection methods connect using the electromagnetic spectrum. This may be traditional radio waves or even light waves.
What is Cat5 and Explain 2 Advantages and 2 limitations
๐๐ฌ๐๐ฌ
- Telephone communications and ethernet networks.
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Versatile and widely available.
๐ Cheap compared to other networking options.
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Only useful over shorter distances.
๐ More susceptible to interference than other wired techniques such as fibre.
What is Coaxial and Explain 2 Advantages and 2 limitations
๐๐ฌ๐๐ฌ
- All types of data communication, commonly used in television cabling.
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Less susceptible to interference than UTP/STP so works over longer distances.
๐ Cheap, though not as cheap as UTP/STP.
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Thickness of cable makes it difficult to work with.
๐ Limited bandwidth.
what is Fibre Optic and Explain 3 Advantages and 2 limitations
๐๐ฌ๐๐ฌ
- Telephone and internet cables, cable television and computer networking.
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Improved security as the cable cannot be tapped.
๐ Can be used over long distances.
๐ High data transfer rate.
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Very expensive.
๐ Specialist skills needed to install.
what is VGA and Explain 2 Advantages and 3 limitations
๐๐ฌ๐๐ฌ
- Analogue connection of video display equipment, such as projectors, CRTs or LCDs.
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
- Universally used on high- resolution display equipment.
- Low-cost cabling.
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
- heavy cabling
-Signal affected over distance (noise).
- No DRM (digital rights management).
What is HDMI and Explain 2 Advantages and 2 Limitations
๐๐ฌ๐๐ฌ
- Digital connection of both video and sound from devices to display equipment
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Capable of 8k resoulotion
๐ Used in Computing and entertainment
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ limited strength
๐ cabling and technology is more expensive than analogue equivalents such as VGA
What is USB/FireWire and state 3 advantage and 2 limitations
๐๐ฌ๐๐ฌ
- Connecting equipment and peripherals such as printers, scanners, input devices and cameras
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ High Speed capability
๐ Backwards Capability
๐ Can Connect multiple devices
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Limited Distance
๐ Limited Power supply
what is Ethernet and state 4 advantages
- Provides greater bandwidth/ faster (network) connection (1) which allows faster data transmission (of larger files) / allows more files to be transmitted at the same time (1) which will improve productivity/efficiency (1)
- Improved security (1) because it does not radiate signals/provides a fixed connection (1) which makes hacking more difficult/difficult to tap/no need to give out wireless access keys (1)
- (Wired) signal strength/ (network) connection is stable/ fixed (1) is not affected by environmental/external factors/ no interference (1) which can reduce packet/signal loss (1)
- (Wired) signal strength/ (network) connection stays constant over distance (1) distance from the router is not an issue (1) reducing the need for boosters (1)
What is Wi-fi and state 3 advantage and 2 limitations
๐๐ฌ๐๐ฌ
- To connect devices
wirelessly to local and wide
area networks such as the
internet
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐High data transfer speeds.
๐ Good range.
๐ Relatively cheap to install
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Can be complex
๐ Security concerns
What is 3G/4G/WiMax and state 2 advantage and 2 limitations
๐๐ฌ๐๐ฌ
- To connect to data networks such as the internet whilst on the move
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Allows true mobility
๐ 4G provides for very fast connection speeds
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Heavy data usage can be costly
๐ uses public networks
What is satellite broadband and state 2 advantages and 2 limitations
๐๐ฌ๐๐ฌ
- Provides connectivity to remote areas, often rural
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Wide coverage
๐ High speed
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ High latency
๐ Subject to weather conditions
What is Microwave/laser
๐๐ฌ๐๐ฌ
Allows Point-to-Point LAN connection between locations
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ High speed
๐ No ongoing costs
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Affected by poor weather
๐ High initial cost
what is Bluetooth and state 2 advantage and 2 limitations
๐๐ฌ๐๐ฌ
- For pairing devices over short distances, such as wireless headphones watches, keyboard and mice
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Easy to set up
๐ Lower power consumption
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Low data transfer speeds
๐ Very short range
what is Wi-Fi Direct and state 2 advantages and 2 limitations
๐๐ฌ๐๐ฌ
- For connecting devices to remote displays
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Can transmit both audio and video
๐ Usually built in to devices
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Limited range
๐ Can affect data connectivity
what is Wi-Fi and 2 advantages and 1 limitation
๐๐ฌ๐๐ฌ
- Allows Ad-Hoc networks to permit wireless printing scanning for example
๐๐๐ฏ๐๐ง๐ญ๐๐ ๐
๐ Simple setup
๐ uses existing Wi-Fi infrastructure
๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
๐ Using ad-hoc networks can impact connectivity
Advantage of wireless connections
- Easier to connect/ give access to guest users/ larger number of users/devices can connect (1)
- Portability/ signal is available anywhere (within range of router) (1)
- No risks caused by trailing wires (1)
- No additional wires/ cabling (1)
Disadvantage of wireless connections
๐Signals diminish over distance (1)
๐Usually have a smaller bandwidth (1)
Advantages of Wired Connections
๐Signals are stable / reliable (1)
๐Signals do not diminish over distance (1)
๐Signals are not subject to interference (from objects such as walls / other wireless devices) (1)
๐(Usually) have greater bandwidth than wireless connections (1)
๐More secure than wireless connections / Less risk of hackers (1)
๐Faster transmission speeds (uploading / downloading speeds) (1)
Disadvantages / Implications of Wired Connections
๐ Restrict movement / no mobility / cables have to be laid (1) PC must stay where the connection point is (1)
๐Health & Safety risks (1) trailing cables / tripping hazards etc (1)
Limitations of Wireless Laptops over Old Computers
(๐๐๐๐ค๐ ๐ซ๐จ๐ฎ๐ง๐/๐ฌ๐ญ๐๐ซ๐ญ๐ข๐ง๐ ๐ฉ๐จ๐ข๐ง๐ญ)
๐๐๐๐ค๐ ๐ซ๐จ๐ฎ๐ง๐/๐ฌ๐ญ๐๐ซ๐ญ๐ข๐ง๐ ๐ฉ๐จ๐ข๐ง๐ญ
- Old/ varying ages of computers will have caused problems e.g. hardware and software incompatibility, limited storage capacity, slow processors. Problems also due to using a โmixโ of outdated hardware and software. Will hope that new will overcome these types of problems.
Limitations of Wireless Laptops over Old Computers
(๐๐ข๐ซ๐๐ ๐ฏ ๐๐ข๐ซ๐๐ฅ๐๐ฌ๐ฌ)
- Wired networks provide a more secure connection. Wired connections give agency full control of who can access the network/data. As the admin offices will be dealing with a great deal of personal/sensitive data this is of paramount importance. Will need to increase security if move (admin offices) to wireless.
- Wired connection are generally more reliable / faster, wireless connections are subject to interference from a variety of sources.
Limitations of Wireless Laptops over Old Computers
(๐๐๐ซ๐๐ฐ๐๐ซ๐)
Positioning of PCs is currently restricted by the wired connection points.
Laptops:
- Users will have more flexibility to move around within the office/rearrange office
Can take laptops around the building
Disposal of old PCs - Users may not like using laptops / ergonomics should be considered โ with a PC have more choice in terms of hardware e.g. larger screens, different types of keyboard / ergonomic etc (with/without number pad)
Limitations of Wireless Laptops over Old Computers
๐๐จ๐ฌ๐ญ
Will have to work within the budget provided by the grant and will need to consider:
โซ Initial cost of purchasing the hardware / new laptops / spec for spec laptops more expensive than PCs.
May be costs of updating software, existing software on โoldโ PCs may be out of date and incompatible with new laptops and modern operating systems
โซ May be some increased costs for software licences depending on any new software purchased. However in most instances site licences will have been purchased and the licences can be transferred from PCs to laptops.
โซ Unlikely to be any/minimal retraining costs (unless new software is necessary).
โซ May be increase in ongoing costs as wireless networks are generally require more maintenance.
Limitations of Wireless Laptops over Old Computers
๐๐ฆ๐ฉ๐ฅ๐๐ฆ๐๐ง๐ญ๐๐ญ๐ข๐จ๐ง ๐ญ๐ข๐ฆ๐๐ฌ๐๐๐ฅ๐
โซ Will be very little downtime when replacing computers. Data from PCs is stored on / transferred to server.
โซ However will need to test system to ensure that system can cope with the wireless traffic. Need to do this to minimise disruption โ schedule appropriately.
โซ Changes/extension to network in future - moving to a wireless provide the agency with more flexibility in the future if there is an increased need for computers.
Limitations of Wireless Laptops over Old Computers
๐๐๐๐ฎ๐ซ๐ข๐ญ๐ฒ
Portability of laptops will lead to need for increased security measures, both physical and software.
- Who will be responsible for the laptops
- What happens at the end of the day/when office is unoccupied โ will laptops be locked away
- Need to review/set up security policy
