The search engine performs the following tasks-

1. Web crawling: Search engines search all web pages on the web using a crawler. A crawler is a program that finds new web pages by following links on the web.

2. Indexing: Once the crawler finds all the web pages, the search engine indexes them in a database. The index contains information for each web page, such as title, URL, and content.

3. Searching: When a user types a search query, the search engine searches all the web pages in the index that may be related to the query.

In a hierarchical database model, a parent record type can be associated with one or more child record types, but a child record type can have only one parent. This hierarchical structure is represented as a tree-like schema, where each parent record can have multiple child records, but each child record has only one parent. This model is useful for representing data with hierarchical relationships, such as organizational structures or file systems.

1. A file that contains a template for a simple presentation using predefined settings.

- Presentation: Using the template, you can create a professional presentation that will grab attention and impress your audience.

- Document: Using templates, you can create a professional document that is well-written and well-organized.

- Email: Using the template, you can create a professional email that will attract attention and get your response.

- Web page: Using the template, you can create a professional web page that is beautiful and easy to use.

The clrscr in C is a built-in function that is used for clearing the screen of the console output during the execution of the C program. This function is defined in the conio. h header file. We need to include the “conio.

The comment given for a cell entry displays the following information on the screen:

1. Comment text: The comment text is written by the person who is rating the item. This text may express the person's opinion or reaction to CellEntry.

2. Comment Rating: Comment rating is a numerical value that reflects the quality of the cell entry. Ratings usually range from 1 to 5, where 1 is the lowest and 5 is the highest.

3. Comment time: Comment time is the time when the comment was written.

There are many types of cyber threats, including:

1. Spam Email: Spam email is a type of cyber threat which is done by sending unsolicited emails. Spam emails are often used to spread advertisements, scams, or viruses.

2. Hacking: Hacking is a type of cyber threat that involves gaining unauthorized access to a computer system or network. Hackers often use hacking to steal data, damage systems, or intercept transactions.

3. Phishing: Phishing is a type of cyber threat in which victims are tricked into providing their personal information, such as passwords or credit card numbers. Phishing attacks are often carried out via email, social media, or websites.

4. Viruses: Viruses are a type of malware that can infect a computer system and damage data, slow down the system, or even disable it. Viruses often spread through spam emails, infected files, or physical media.

5. Worm: A worm is a type of malware that can copy itself from a computer system and spread from one system to another. Worms often spread via email, infected files, or physical media.

6. Denial-of-Service (DoS) attacks: DoS attacks are a type of cyber threat that is used to disable a website or service. DoS attacks are often carried out using large amounts of traffic or resources.

7. Load Ballast Attacks: Load ballast attacks are a type of DoS attack in which a large amount of data is sent to a website or service. Load ballast attacks are often carried out to disable a website or service.

8. Human-based attacks: Human-based attacks are a type of cyberattack that target people. Human-based attacks can include phishing, social engineering, and cyberpsychology.

9. Physical Attacks: Physical attacks are a type of cyberattack that targets the physical components of a computer system or network. Physical attacks could include data centre fires or power outages.

1. Booting is a type of start-up sequence that starts the computer's operating system when the system is switched on.

2. This process involves some set of operations, which are performed when the computer is switched on. Knowing the boot sequence is important for optimizing and troubleshooting the computer.

3. It can be initiated by hardware such as a button press, or by software commands.

4. After it is started, there is no software in the main memory of the computer's central processing unit (CPU), so the software must be loaded into memory before it can be executed by some process.