2210_s22_qp_12
A paper of Computer Science, 2210
Questions:
8
Year:
2022
Paper:
1
Variant:
2
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2
Hexadecimal is used for Hypertext Markup Language (HTML) colour codes. An HTML colour code is: #2F15D6 Each pair of digits is stored as binary in an 8‑bit register. Give the 8‑bit binary value that would be stored for each pair of hexadecimal digits. 2F D6 Working space HTML colour codes and Media Access Control (MAC) addresses are two examples of where hexadecimal is used in Computer Science. Give two other examples of where hexadecimal can be used in Computer Science. Example 1 Example 2 Websites can be created using HTML structure and presentation. State what is meant by HTML structure and presentation. Give an example of each in your answer. Structure Presentation Explain why presentation is often separated from structure when creating a web page.
1. Data representation  →  1.1. Number systems
1. Data representation  →  1.2. Text, sound and images
Open
3
Joelle is a student who uses the Internet. The table contains five terms or definitions that relate to the Internet. Complete the table by writing each missing term or definition. Term Definition browser this is the company that provides a user with a connection to the Internet this is a protocol that is used to send data for web pages across the Internet Uniform Resource Locator (URL) cookie Joelle uses a firewall to keep her data safe when she uses the Internet. Tick (3) to show which statement about firewalls is true. Tick (3) Firewalls can only be hardware‑based Firewalls can only be software‑based Firewalls can be hardware‑based or software‑based Joelle’s parent also uses the firewall to limit the websites that Joelle can access. Explain how the firewall is used to limit the websites that Joelle can access.
5. The internet and its uses  →  5.1. The internet and the world wide web
5. The internet and its uses  →  5.3. Cyber security
Open
4
Jason is a programmer who writes computer programs in a high‑level language. Describe what is meant by a high‑level language. Jason wants to distribute a computer program he has written. He is considering distributing it to users as freeware or free software. Explain one drawback to a user if the program is distributed as freeware. Explain one benefit to a user if the program is distributed as free software.
4. Software  →  4.2. Types of programming language, translators and integrated development environments (IDEs)
Open
6
Millions of emails are sent between users on a daily basis. Identify two online security attacks that can be carried out using email. Describe how email is used to enable the attack. Online security attack 1 Description Online security attack 2 Description Online security attacks can maliciously damage data. One security method to keep data safe from online attacks is a firewall. Identify two other security methods that keep data safe from online attacks. Security method 1 Security method 2 Data can also be damaged accidentally. One example of how data can be damaged accidentally is by shutting down a computer before saving data. To prevent this from happening, a user should make sure they have saved all data before shutting down a computer. Complete the table by giving three other examples of how data can be damaged accidentally. Give a method of prevention for each example. Example Method of prevention
5. The internet and its uses  →  5.3. Cyber security
Open
7
Cassie stores data for her business every day. She stores the data using optical data storage. Identify three examples of optical data storage. Example 1 Example 2 Example 3 Six statements are given about the operation of three different types of storage. Tick (3) to show which statements apply to each type of storage. Some statements may apply to more than one type of storage. Type of storage Statement Magnetic (3) Optical (3) Solid state (3) this storage has no moving parts this storage uses a laser to read and write data this storage uses a read/write head this storage burns pits onto a reflective surface this storage uses NAND and NOR technology this storage stores data in tracks and sectors
3. Hardware  →  3.3. Data storage
1. Data representation  →  1.3. Data storage and compression
Open