Networking Devices Functions Quiz

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Questions and Answers

What is the primary purpose of buffering in media streaming?

To create a backup of the media on the device

To ensure that the software downloads data before playback (correct)

To increase the resolution of the media being streamed

To encrypt the media content for secure transmission

Which of the following is NOT a feature associated with e-publications?

Instant download to connected devices

Incurred printing costs (correct)

Ability to zoom in and out of pages

Availability of digital libraries

How does a mobile phone transition between cells when moving out of range?

By manually changing to a stronger network

By losing the connection with no alternatives

By picking up the signal from an adjacent cell (correct)

By switching to a satellite connection automatically

What technology is used for international communication on mobile phones?

Satellite technology Signup and view all the answers

Which benefit does e-publication have over traditional paper-based publications?

More interactive advertising options Signup and view all the answers

Which of the following is NOT a reason for having a website?

Increases physical store sales Signup and view all the answers

What is a disadvantage of multimedia presentation?

Equipment failure may occur Signup and view all the answers

What is Method 2 in online advertising?

Paying another company for advertising space Signup and view all the answers

What is one major benefit of media streaming?

Reduces storage space usage on devices Signup and view all the answers

Which option is a key function of buffering in media streaming?

To preload data into memory Signup and view all the answers

Which of these statements about multimedia presentations is true?

They have the potential for excessive animations. Signup and view all the answers

What could be a consequence of developing your own website?

High potential for increased vulnerabilities Signup and view all the answers

Which is NOT a benefit of having a website?

Creating social media campaigns Signup and view all the answers

What is the maximum effective range of Bluetooth connections?

30 meters Signup and view all the answers

Which frequency band provides higher transfer speeds for Wi-Fi?

5 GHz Signup and view all the answers

What is one disadvantage of using the 2.4 GHz band for Wi-Fi?

Vulnerable to interference Signup and view all the answers

How many devices can connect to a Bluetooth device at maximum?

Up to 7 Signup and view all the answers

Which of the following describes an advantage of Wi-Fi over Bluetooth?

Can connect to the internet wirelessly Signup and view all the answers

Cloud computing allows data to be stored where?

On remote servers Signup and view all the answers

What is the maximum data transfer rate of Bluetooth?

25 Mbits/second Signup and view all the answers

Which Wi-Fi security protocol uses WEP and WPA?

Wireless Equivalent Privacy Signup and view all the answers

Why is Bluetooth not suitable for high-speed data transmission?

Its maximum data transfer rate is lower. Signup and view all the answers

What happens to Wi-Fi signals at greater distances?

They are less likely to penetrate solid objects. Signup and view all the answers

Study Notes

Router Functions

Routers route data packets between networks based on IP addresses.
They inspect IP addresses to determine if the data packet is for an internal or external network.
If the packet is for an internal network, the router sends the packet to the local switch or hub.
Otherwise, the packet is forwarded to another router.
Routers maintain a routing table with information of immediate and other networks in the vicinity.
When a packet arrives, the router checks the routing table to determine the best path to the destination.
Routers do not need MAC addresses to forward packets; switches handle that.

Bridge Functions

Bridges connect Local Area Networks (LANs) together.
They examine MAC addresses to move packets between same protocol networks.
Bridges use a MAC address table to forward packets to the correct device.
Bridges are used in networks where the same protocol is used by different devices.
Bridges only have two ports.

Wi-Fi and Bluetooth

Both use electromagnetic radiation to send data.
Bluetooth operates using 79 frequencies. Devices pair up to use different frequencies (Bluetooth channels).
Wi-Fi uses 2.4 GHz and 5 GHz frequencies.
Wi-Fi offers faster data speeds and a wider range but is more easily affected by interference than Bluetooth.
Bluetooth is more suited when data speed isn't a priority.

Wi-Fi vs Bluetooth

Advantages of Wi-Fi: faster data transfer, larger range, better security.
Disadvantages of Wi-Fi: more susceptible to interference, slower speeds in congested areas
Advantages of Bluetooth: easier setup, less susceptible to interference, lower power consumption
Disadvantages of Bluetooth: slower data transfer speeds, shorter range

Cloud Computing (Storage)

Data stored on remote servers. Redundancy (data copies) on multiple servers to ensure access if a server fails.
Hosting companies own and control the physical servers.
Types: Public cloud, private cloud, hybrid cloud. Public cloud offers services to anyone. Private cloud is only for selected users. Hybrid cloud combines both.

Network Types

LAN (Local Area Network): connects devices within a building.
WLAN (Wireless Local Area Network): uses wireless signals for connection within a given area.
MAN (Metropolitan Area Network): spans a larger geographic area such as a city.
WAN (Wide Area Network): largest network covering a wide area (e.g. the internet).

Cloud Computing (Advantages)

Accessible data from anywhere with internet access.
Backup and recovery of data is automatic.
No need for hardware or software management by users.

Cloud Computing (Disadvantages)

Security vulnerabilities since data is stored remotely.
Problems with slow internet connections to access data.

Network Security Threats

Viruses, malware, identity theft, spam and pharming attacks can compromise network security.

Wi-Fi vs Wired Networks

Advantages of Wireless Networks
Easy mobility of devices in a wider area
Less wiring congestion
Disadvantages of Wireless Network
Security concern
Slower internet speed
Hardware failure

Router vs Bridge

Routers use IP addresses to determine forwarding of data
Bridges use MAC addresses in this process
Routers work between Local Area Networks (LAN) and Wide Area Networks (WAN) and Bridges connect LAN to LAN

Video Conferencing

Real-time video and audio communication over the internet.
Requires devices such as microphones and speakers.
Often used for business meetings, education, or social interaction.

Audio Conferencing

Audio-only communication over the internet or a phone network.
Allows parties to participate remotely while sharing information or having conversations.

Web Conferencing

Computer application used for meetings and discussions over the internet.
Usually includes screen-sharing and file-sharing capabilities.

Computer Modelling

Computer models depict real-world phenomena such as floods, bridges to avoid costly mistakes before beginning construction.
Uses models to simulate various scenarios and test their impacts.

Flood Management

Computer models are used to predict potential flood levels, paths, and depths.
Input data can include river cross-sections, bridge dimensions for modelling water flow pathways.
Models create plans to guard against anticipated future floods.

Traffic Management

Models are used to study how changes in traffic flow on roads or bridges could effect in multiple scenarios.
They examine how many vehicles can pass through junctions at different times of the day to provide better congestion predictions.
Modeling is used to develop better traffic flow management plans.

Weather Forecasting

Weather stations collect and record environmental data such as rainfall, temperature, humidity, wind speed & direction, and barometric pressure.
Information is used to make predictions about future weather patterns.

Computer-Aided Learning

Computer-based systems are used to enhance classroom instruction, as a supplement.

Booking Systems

Online booking systems automate aspects of booking events, tickets, or airline travel.
They help prevent double-booking and improve speed and accuracy in booking processing steps.

Banking Systems

Modern banking systems use ATMs and EFT (electronic funds transfer) with credit/debit cards.
Cheques are a less common payment method, slower and more inconvenient

Advantages of Using Electronic vs Paper-Based Publication

Cost efficiency
Accessibility and availability
Environmentally friendly
Easy to update and modify

Disadvantages of Using Electronic vs Paper-Based Publication

Security risks
Technical malfunctions
Environmental factors (energy consumption)

Advantages of using robots vs labour

Faster processing
High accuracy
Consistency
Can work in dangerous or difficult situations.
Can work non-stop

Disadvantages of using robots

High initial set-up costs
Can be difficult to reprogram for different tasks
Can cause job displacement.
Can be costly to maintain.

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Description

Test your knowledge of the functions and roles of routers and bridges in a network. This quiz covers how routers manage data packets and routing tables, as well as how bridges connect LANs and process MAC addresses. Challenge yourself and see how well you understand these essential networking concepts!