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5. The internet and its uses
A section of Computer Science, 0478
Listing 10 of 111 questions
Six computer terms and six descriptions are shown below. Draw a line to link each term to its appropriate description. Term Description Browser Signal sent to a processor which may cause a break in execution of the current routine, according to priorities HTML Company that provides individual’s access to the Internet and other services such as web hosting and emails Internet service provider Software application used to locate, retrieve and display content on the World Wide Web e.g. web pages, videos and other files Interrupt Hardware identification number that uniquely identifies each device on a network; it is manufactured into every network card and cannot be altered IP address Authoring language used to create documents on the World Wide Web; uses tags and attributes MAC address Location of a given computer/device on a network; can be a static or dynamic value
0478_w15_qp_11
THEORY
2015
Paper 1, Variant 1
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Computer ethics involves a number of different topics. A student made the following statement on an examination paper: “It allows a user to have the freedom to run, copy, change and adapt the software and then pass it on to a colleague, friend or family member.” Identify which computer term the student was describing. Explain what is meant by computer ethics. The four statements below refer to firewalls and proxy servers. Study each statement. Tick (9) the appropriate columnto indicate whether the statement refers to a firewall and/or a proxy server. Statement Firewall Proxy server Speeds up access of information from a web server by using a cache Filters all Internet traffic coming into and out from a user’s computer, intranet or private network Helps to prevent malware, including viruses, from entering a user’s computer Keeps a list of undesirable websites and IP addresses Explain three ways of preventing accidental loss or corruption of data.
0478_w15_qp_13
THEORY
2015
Paper 1, Variant 3
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Name each of the potential security issues described in the five statements below: Statement Security issue The act of gaining unauthorised access to a computer system Program code that can replicate itself with the intention of deleting or corrupting files stored in a computer A small file sent by a web server to a web browser; every time the user visits the website, data about user preferences is collected The act of illegally changing the source code of a program so that it can be exploited for another use Malicious code installed on a user’s hard drive or a web server which redirects the user to a fake website without their knowledge
0478_w16_qp_11
THEORY
2016
Paper 1, Variant 1
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Name each of the potential security issues described in the five statements below: Statement Security issue The act of gaining unauthorised access to a computer system Program code that can replicate itself with the intention of deleting or corrupting files stored in a computer A small file sent by a web server to a web browser; every time the user visits the website, data about user preferences is collected The act of illegally changing the source code of a program so that it can be exploited for another use Malicious code installed on a user’s hard drive or a web server which redirects the user to a fake website without their knowledge
0478_w16_qp_13
THEORY
2016
Paper 1, Variant 3
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Complete the statements about cookies. Use only terms from the list. Not all terms need to be used. Some terms may be used more than once. binary close denary expire hexadecimal image malware operating system permanent persistent session sound temporary web browser Cookies are small text files that are stored by a . cookies are text files that are deleted when the is closed. cookies are text files that are stored on a user’s secondary storage device until they are manually deleted or they . Give three examples of the use of cookies.
0478_w24_qp_13
THEORY
2024
Paper 1, Variant 3
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Complete the statements about a distributed denial of service (DDoS) attack. Use the terms from the list. Some of the terms in the list will not be used. You should only use a term once. anti-virus bot botnet hacker internet malware secondary storage spyware web browser web server website The attacker encourages people to download onto their computer. This will turn each computer into a , creating a network called a . When the attacker wants the DDoS to take place, repeated requests are simultaneously sent from the computers to a . This causes it to crash, meaning that users can no longer access the that is stored on this hardware.
0478_s23_qp_13
THEORY
2023
Paper 1, Variant 3
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Complete the description of digital currencies using the terms provided. blockchains changed datachains decentralised deleted encryption passport physical address physically records time-stamp traced transaction-chains virtually A digital currency does not exist , it can only be accessed electronically. Some digital currencies have digital ledgers called These are decentralised databases where each transaction is stored as a new set of data with a and is linked to the previous set of data. This means that transactions cannot be altered, only new transactions added, which allows the location of the data to be
0478_m24_qp_12
THEORY
2024
Paper 1, Variant 2
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Questions Discovered
111