Informatics Challenge for Grade 7

What is a data structure?

• A data structure is a type of computer program.

• A data structure is a method for writing code.

• A data structure is a specialized format for organizing, processing, and storing data.

• A data structure is a hardware component for data storage.

Name two types of data structures.

• Trees, Graphs

• Stacks, Queues

• Hash Tables, Sets

• Arrays, Linked Lists

What is the purpose of a linked list?

• To ensure data is always sorted in order

• To store data in a fixed-size array

• The purpose of a linked list is to provide a dynamic data structure for efficient insertion and deletion of elements.

• To provide a static data structure for fast access

Explain the difference between a stack and a queue.

• A stack allows random access, while a queue does not.

• Both stack and queue use LIFO.

• A stack uses FIFO, while a queue uses LIFO.

• A stack uses LIFO, while a queue uses FIFO.

What is the function of a router in a computer network?

• To provide internet access to devices.

• To encrypt data for secure transmission.

• To store data packets for later use.

• The function of a router in a computer network is to direct data packets between different networks.

Define the term 'IP address'.

• A type of software used for network security.

• A protocol for sending emails over the internet.

• A physical device that connects to the internet.

• An IP address is a unique numerical label assigned to each device on a network that uses the Internet Protocol for communication.

What is the difference between LAN and WAN?

• LAN is a type of WAN.

• WAN is used for local connections only.

• LAN and WAN are the same type of network.

• LAN is for local connections; WAN is for long-distance connections.

What does cybersecurity aim to protect?

• User interface design

• Physical security measures

• Publicly available data

• Sensitive information, systems, and networks.

Name one common type of malware.

• Spyware

• Trojan

• Virus

• Worm

What is encryption in cybersecurity?

• A method to delete sensitive data permanently.

• Encryption in cybersecurity is the process of converting information into a secure format that can only be read by someone who has the correct decryption key.

• A way to compress files for faster transfer.

• A technique to create backups of data.