5.1 Voice calling is used in many IM apps - NSC Computer Application Technology - Question 5 - 2018 - Paper 2

To transfer files using NFC, both devices need to have the NFC setting turned on. Then, the two devices should be placed very close to each other, allowing them to establish a connection and exchange files.

1. Making payments through mobile wallets.
2. Initiating actions or launching apps by tapping on another device.

1. The recipient’s mailbox is full, preventing new messages from being received.
2. The e-mail address may be incorrect or does not exist, leading to delivery failure.

A shopping cart allows the user to store, add, or remove products before finalizing a transaction, giving them the opportunity to review their selections easily.

1. Battery life may be depleted quicker due to increased data usage and hotspot activity.
2. The overall internet experience may be slower compared to dedicated Wi-Fi services.

To make a website publicly available, you can use a suitable web development or hosting service, such as WordPress, or obtain a fixed IP address for your local server.

1. Access to the network can be limited to only the shop's customers for enhanced security.
2. To reduce the possibility of network congestion and ensure fair access for all users.

1. To prevent unauthorized access to certain files and folders, ensuring data security.
2. To control access to changing system settings, protecting the network from unintentional mishaps.