5.3. Cyber security
A subsection of Computer Science, 0478, through 5. The internet and its uses
Listing 10 of 62 questions
A student website provides research support and software downloads. Students use a browser to access the web pages. Explain the role of a browser in this process. The website owners are worried about a denial of service (DoS) attack. Explain the term denial of service attack. The website owners are also concerned about the ethical issues of copyright and plagiarism. State what is meant by the term copyright. State what is meant by the term plagiarism.
0478_m20_qp_12
THEORY
2020
Paper 1, Variant 2
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A holiday company has a website where customers can create accounts and can book and pay for holidays. The website is written in Hypertext Markup Language (HTML). Give two examples of HTML structure and two examples of HTML presentation. Structure 1 Structure 2 Presentation 1 Presentation 2 The website is stored on a web server. Customers use their own computers to access the website. Uniform Resource Locator (URL), Internet Protocol (IP) and Media Access Control (MAC) are three types of address used by computers when accessing the Internet. Give two features of each type of address in the table. Type of address Features URL IP MAC The company is concerned about threats to its web server. Complete the table by identifying: • two potential threats to its web server • the impact each threat could have on the company • software the company can use to help to limit each threat. Each impact must be different. Threat Impact on company Software
0478_m22_qp_12
THEORY
2022
Paper 1, Variant 2
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Viruses, pharming and phishing are all examples of potential Internet security issues. Explain what is meant by each of these three terms. Virus Pharming Phishing An online bank requires a client to supply an 8-digit code each time they wish to access their account on the bank’s website. Rather than ask the client to use a keyboard, they are requested to use an on-screen keypad (shown on the right) to input the 8-digit code. The position of the digits on the keypad can change each time the website is visited. 2 5 1 6 8 3 9 0 4 The client uses a mouse or touch screen to select each of the 8 digits. Explain why the bank has chosen to use this method of entering the 8 digits. Name and describe another measure that the bank could introduce to improve the security of their website. Name Description
0478_s15_qp_11
THEORY
2015
Paper 1, Variant 1
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Viruses, pharming and phishing are all examples of potential Internet security issues. Explain what is meant by each of these three terms. Virus Pharming Phishing An online bank requires a client to supply an 8-digit code each time they wish to access their account on the bank’s website. Rather than ask the client to use a keyboard, they are requested to use an on-screen keypad (shown on the right) to input the 8-digit code. The position of the digits on the keypad can change each time the website is visited. 2 5 1 6 8 3 9 0 4 The client uses a mouse or touch screen to select each of the 8 digits. Explain why the bank has chosen to use this method of entering the 8 digits. Name and describe another measure that the bank could introduce to improve the security of their website. Name Description
0478_s15_qp_13
THEORY
2015
Paper 1, Variant 3
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A bank offers an online service to its customers. The bank has developed a “SafeToUse” system that asks each customer to enter four randomly chosen characters from their password each time they log in. The customer selects these four characters from drop-down boxes. For example: Please select the 2nd character 5th character 6th character 8th character Explain why it is more secure to use drop-down boxes rather than entering characters using a keyboard. Give a reason why the system asks for four characters chosen at random. Biometrics is an additional form of security. Give two examples of biometrics.
0478_s16_qp_11
THEORY
2016
Paper 1, Variant 1
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Six security issues and six descriptions are shown below. Draw a line to link each security issue to its correct description. Security issue Description illegal access to a computer system without the owner’s consent or knowledge software that gathers information by monitoring key presses on a user’s keyboard; the data is sent back to the originator of the software malicious code installed on the hard drive of a user’s computer or on a web server; this code will re-direct the user to a fake website without the user’s knowledge creator of code sends out a legitimate-looking email in the hope of gathering personal and financial information from the recipient; it requires the user to click on the link in the email or attachment a message given to a web browser by a web server; it is stored in a text file; the message is then sent back to the server each time the browser requests a page from the server program or code that replicates itself; designed to amend, delete or copy data or files on a user’s computer; often causes the computer to crash or run slowly Pharming Phishing Viruses Hacking Spyware Cookies
0478_s16_qp_11
THEORY
2016
Paper 1, Variant 1
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A bank offers an online service to its customers. The bank has developed a “SafeToUse” system that asks each customer to enter four randomly chosen characters from their password each time they log in. The customer selects these four characters from drop-down boxes. For example: Please select the 2nd character 5th character 6th character 8th character Explain why it is more secure to use drop-down boxes rather than entering characters using a keyboard. Give a reason why the system asks for four characters chosen at random. Biometrics is an additional form of security. Give two examples of biometrics.
0478_s16_qp_13
THEORY
2016
Paper 1, Variant 3
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Questions Discovered
62