Tech Knowledge Challenge

What is a computer network?

• A computer network is a collection of random devices without any communication.

• A computer network is a system of interconnected computers and devices that communicate and share resources.

• A computer network is a type of software used for programming.

• A computer network is a single computer that operates independently.

Name two types of computer networks.

• Global Area Network (GAN)

• Local Area Network (LAN), Wide Area Network (WAN)

• Personal Area Network (PAN)

• Metropolitan Area Network (MAN)

What does LAN stand for?

• Long Area Network

• Local Area Network

• Local Access Network

• Large Area Network

What is the purpose of a router in a network?

• To amplify signals in a network

• To store data for backup purposes

• The purpose of a router in a network is to connect multiple networks and route data between them.

• To provide wireless internet access

Define data structure.

• A data structure is a way to visualize data on a screen.

• A data structure is a method for writing code.

• A data structure is a type of computer program.

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

What is an array in data structures?

• An array is a single element of any data type.

• An array is a collection of elements with no specific order.

• An array is a collection of elements identified by index or key, typically of the same data type.

• An array is a type of function that returns a value.

What is the difference between a stack and a queue?

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

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

• Both stack and queue use LIFO.

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

What is a linked list?

• A linked list is a data structure made up of nodes, where each node contains a value and a reference to the next node.

• A linked list is a type of array that stores elements in contiguous memory locations.

• A linked list is a collection of values stored in a hash table.

• A linked list is a data structure that only contains a single node with no references.

What is a primary key in a database?

• A primary key is an optional field in a database.

• A primary key can be duplicated across records.

• A primary key is a type of foreign key.

• A primary key is a unique identifier for a record in a database.

What is SQL used for?

• SQL is used for managing and manipulating relational databases.

• SQL is used for designing user interfaces.

• SQL is used for creating graphics and animations.

• SQL is used for managing non-relational databases.