5.1 Voice calling is used in many IM apps - NSC Computer Application Technology - Question 5 - 2018 - Paper 2
Question 5
5.1 Voice calling is used in many IM apps.
What network communications protocol makes this feature possible?
5.2 NFC is a communication medium available on many mo... show full transcript
Worked Solution & Example Answer:5.1 Voice calling is used in many IM apps - NSC Computer Application Technology - Question 5 - 2018 - Paper 2
Step 1
What network communications protocol makes this feature possible?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The network communications protocol that makes voice calling possible in many IM apps is VOIP (Voice Over Internet Protocol).
Step 2
How would one transfer files using NFC between two devices that have the NFC setting switched on?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To transfer files using NFC, the two devices need to be placed very close to each other or must touch each other. Once they are close, the user can select the file to be transferred, and the NFC technology will initiate the transfer process automatically.
Step 3
State TWO uses of NFC.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Making payments through mobile wallets.
Identification and security purposes, such as unlocking doors or accessing secure areas.
Step 4
Give TWO possible reasons why an e-mail is not delivered to some recipients on a distribution list.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The recipient’s mailbox is full, preventing further emails from being received.
The email address is incorrect or does not exist, causing delivery failure.
Step 5
With reference to online shopping, what is the purpose of a shopping cart?
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The shopping cart allows users to store and manage products before completing a transaction. It lets them review selected items and make adjustments before finalizing the purchase.
Step 6
State TWO disadvantages of using a smartphone as a Wi-Fi hotspot.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The battery life of the smartphone may be depleted quicker due to increased usage.
The overall internet experience may become slower as multiple devices share the bandwidth.
Step 7
How can you make your own website available to the public on the internet?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
You can use a suitable online web development or hosting service, such as WordPress, or you can use an Internet Service Provider (ISP) to host the website on a server.
Step 8
Give TWO reasons why a shop would ask customers to log on using a password.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Access to the network can be limited to only their customers to provide a secure browsing experience.
It helps to reduce the possibility of network congestion and ensures all users get a fair share of the service.
Step 9
Give TWO reasons why it is necessary to limit the access rights of users on a LAN.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To prevent unauthorized access to certain files or folders, ensuring sensitive information is protected.
To block access to certain programs, thereby preventing users from changing system settings.
