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 should have the NFC feature enabled. Users need to place the devices very close to each other or tap them together to initiate the transfer. The device sending the file will select the file to be shared, and the receiving device will confirm the action to receive the files.

1. Making payments using mobile wallets like Google Pay or Apple Pay.
2. Initiating an action or launching an application on a device by tapping another device.

1. The recipient's mailbox is full, preventing the email from being received.
2. The e-mail address is incorrect or does not exist, leading to delivery failures.

The purpose of a shopping cart in online shopping is to allow the user to store, add, or remove products/items before completing a transaction. It facilitates organization and ensures that customers can review their selections.

1. Battery life is depleted quicker when the smartphone is acting as a hotspot due to increased data usage.
2. Overall internet experience may be slower when multiple devices connect to the hotspot, affecting browsing speed.

To make your own website available to the public on the internet, you can use a suitable online web development or hosting service, such as WordPress. Alternatively, you can use an Internet Service Provider (ISP) to host your website or obtain a fixed IP address for your local server.

1. Access to the network can be limited to only customers, ensuring that unauthorized users are prevented from accessing it.
2. To manage the number of users and avoid network congestion, giving all users a fair share of the internet access.

1. Preventing access to certain files or folders to maintain privacy and data security.
2. Blocking access to certain programs to prevent unauthorized use and maintain system integrity.