CREST CPSA - Appendix B: Core Technical
Skills. Exam Questions With Correct
Answers
B1 IP Protocols - answerB1 IP Protocols
B1 (1) What are IP protocols? - answerIP protocols are the set of rules and standards that
govern the communication of data over a network using the Internet Protocol. Th...
B1 (1) What are IP protocols? - answer✔IP protocols are the set of rules and standards that
govern the communication of data over a network using the Internet Protocol. The most
commonly used IP protocols include IPv4 and IPv6, TCP, UDP and ICMP.
B1 (2) What is IPv4 and IPv6? - answer✔IPv4 is the fourth version of the Internet Protocol, it
provides a unique 32-bit address to identify a device on a network. IPv6 is the sixth version of
the Internet Protocol, it provides a unique 128-bit address to identify a device on a network, it
also includes additional features and capabilities than IPv4.
B1 (3) What is TCP and UDP? - answer✔TCP (Transmission Control Protocol) is a transport layer
protocol that provides a reliable, ordered delivery of data over a network. It establishes a
connection between two devices before transmitting data and ensures that all data is received
correctly. UDP (User Datagram Protocol) is also a transport layer protocol but it does not
establish a connection before transmitting data and does not guarantee the delivery of data.
B1 (4) What is ICMP? - answer✔ICMP (Internet Control Message Protocol) is a network-layer
protocol that is used to send error messages and operational information about network
conditions. It is used to diagnose and troubleshoot network issues, such as network congestion
and errors in IP addresses.
B1 (5) Why is it important to be aware that other IP protocols exist? - answer✔Being aware that
other IP protocols exist is important because it allows for a deeper understanding of how
networks operate and how different protocols interact with each other. It also allows for more
effective troubleshooting and diagnosis of network issues, as well as the ability to identify and
address security vulnerabilities. Additionally, new protocols are being developed and
introduced, being aware of them can help to future-proof the security of the network.
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