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

To transfer files using NFC, the two devices should be placed very close to each other, allowing them to establish a connection. Then, a user can select the file to be sent, and once the devices recognize each other, the transfer will initiate.

Two uses of NFC include:

1. Making payments through mobile wallets,
2. Initiating actions or launching apps by tapping devices together.

Two possible reasons could be:

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

The purpose of a shopping cart in online shopping is to allow the user to store or add/remove products/items before a transaction is completed. It serves as a temporary storage space for the products the user intends to purchase.

Two disadvantages include:

1. The battery life of the smartphone may deplete quicker when used as a hotspot.
2. The overall internet experience may be slower compared to dedicated Wi-Fi routers.

You can make your own website available to the public on the internet by using a suitable online web development or hosting service, like WordPress, or by obtaining a fixed IP address for your local server.

Two reasons why a shop would ask customers to log on using a password could be:

1. To limit access to the network to only their customers, ensuring a secure connection.
2. To prevent unauthorized access to sensitive information or restrict access to certain files or folders.

Two reasons for limiting access rights on a LAN include:

1. Preventing access to certain shared files and folders to secure sensitive information.
2. Blocking access to certain programs that could jeopardize network security.