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Your school is hosting a Science expo - NSC Computer Application Technology - Question 9 - 2017 - Paper 2
Question 9
Your school is hosting a Science expo. Participants will be able to bring their own devices to demonstrate their projects. Internet access will be required for all p... show full transcript
Worked Solution & Example Answer:Your school is hosting a Science expo - NSC Computer Application Technology - Question 9 - 2017 - Paper 2
Step 1
9.1.1 State TWO advantages of using Wi-Fi to connect the devices in this situation.
Answer
Using Wi-Fi to connect devices offers the following advantages:
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Mobility: Users can move freely around the venue while remaining connected. This allows for dynamic presentations and demonstrations without being tethered to a specific spot.
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Ease of Setup: There is no need to install cables for every device, simplifying setup and allowing for flexibility in the arrangement of exhibits.
Step 2
9.1.2 Some participants are too far away from the main venue to pick up the Wi-Fi signal. Suggest ONE technology they could use to still have 'wireless' Internet access without using Wi-Fi.
Answer
A possible solution for providing wireless Internet access could be using 3G/4G/LTE mobile networks. Participants can use their mobile data to connect to the Internet, ensuring they stay connected even at a distance from the venue.
Step 3
9.1.3 Name TWO hardware components that might be needed to increase or expand the Wi-Fi coverage to all the locations used for the expo.
Answer
To extend Wi-Fi coverage, the following hardware components may be required:
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Modem Router/Access Point: This device can help improve the signal strength and extend the range of the Wi-Fi network.
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Wi-Fi Extenders/Boosters: These devices can amplify the Wi-Fi signal and help cover areas that experience weak connectivity.
Step 4
9.1.4 Name TWO services an ISP can provide other than Internet access.
Answer
ISPs offer various services beyond Internet access, including:
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Hosting Services: This includes website and email hosting, allowing users to maintain online presences.
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Cloud Storage: An ISP can provide cloud storage solutions for data management and backup.
Step 5
9.1.5 What is the main reason for setting up and using an AUP in the context of Internet usage?
Answer
The primary reason for establishing an Acceptable Use Policy (AUP) is to control or limit Internet use. This ensures that users adhere to guidelines that promote responsible Internet usage, protecting both the network and users from inappropriate content and activities.
Step 6
9.1.6 People anywhere in the world can follow the expo by watching a live stream on a website. State TWO potential disadvantages of using live streaming.
Answer
The disadvantages of live streaming include:
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High Data Usage: Streaming can consume significant amounts of data, which may be costly for users with limited data plans.
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Connection Issues: Poor network connectivity can lead to buffering or interruptions, negatively impacting the viewing experience.
Step 7
9.2 Explain TWO advantages of online applications compared to applications installed on the computers.
Answer
Online applications offer distinct advantages, such as:
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Accessibility: Online applications can be accessed from any device with Internet connectivity, enabling users to work from various locations without being tied to a specific computer.
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Automatic Updates: Applications hosted online are often updated automatically, ensuring that users always have the latest features and security upgrades without manual intervention.
Step 8
9.3 Outline ONE of the most likely technical problems that the school may encounter when the participants connect their devices.
Answer
One technical issue that may arise is software compatibility problems. Different devices might run various operating systems or software versions, making it difficult for them to connect consistently to the network.
Step 9
Step 10
9.4.2 State TWO advantages for the guests of downloading the app from the school's network server as opposed to having to download the app from the app store.
Answer
Guests benefit from:
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Reduced Data Usage: Downloading from the school's server will use less data compared to downloading the app from an external app store, especially if multiple users are accessing it simultaneously.
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Faster Download Speeds: The app can be obtained quickly from the school's server, allowing guests to access it more efficiently without delays.
Step 11
9.4.3 Many guests are concerned that the app may be a potential Trojan AND how is it typically installed?
Answer
Trojan: A Trojan is a type of malicious software disguised as a legitimate program. It typically requires user interaction to install when someone unknowingly downloads and runs it.
Installation: Trojans are usually installed when users download an app from unofficial sources or click on links that seem legitimate, allowing it to execute and deliver its harmful payload.
Step 12
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Step 14
9.5.3 Which component must be added to the list of specifications to enable the computer to connect to the school’s network without using Wi-Fi?
Answer
To connect without Wi-Fi, a Network Interface Card (NIC) must be included in the specifications. This component enables wired network connections.
Step 15
9.5.4 What change in specifications in the list above will have the biggest effect in terms of improving the overall performance of the computer?
Answer
Upgrading the RAM will significantly improve overall computer performance. More RAM allows for better multitasking and faster processing of applications.
Step 16
9.6.1 Give TWO reasons for a software developer to release updates.
Answer
Software developers release updates for the following reasons:
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Fixing bugs: Updates often resolve issues and flaws found in previous versions, ensuring stability and reliability.
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Improving security: Updates address vulnerabilities to strengthen security features and protect against potential threats.
Step 17
9.6.2 Why would a software developer NOT give a user the choice to disable automatic updates?
Answer
Software developers may opt against giving users the option to disable automatic updates to ensure that the software is always running the latest version, which improves security, stability, and overall functionality.
Step 18
9.6.3 State ONE potential disadvantage of not being able to disable automatic updates.
Answer
A potential disadvantage is that data usage can increase dramatically due to updates being downloaded automatically. This can be particularly problematic for users with limited bandwidth or data caps.