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4. What are the key differences to evolve to incorporate future
between the various generations network functionalities?
of mobile networks (1G, 2G, 3. Research a particular network Chapter Three: Advanced Computer Networks
3G, 4G, and 5G)? Focus on their technology, such as VPNs
technological advancements and or wireless networking, and
FOR ONLINE READING ONLY
capabilities. elaborate how it operates within
5. Discuss the security challenges the framework of the OSI or TCP/
associated with PSTN and mobile IP model
telephone systems. What protocols 4. How does VLAN segmentation
or measures are commonly used to contribute to network efficiency
address these challenges? and security, and what are the key
6. Describe the role of the Mobile considerations when implementing
Switching Center (MSC) in a VLANs in a large-scale enterprise
mobile telephone system. How does network?
it interact with other components 5. What role does ARP (Address
like the Base Station Controller Resolution Protocol) play in
(BSC) and the Base Transceiver modern networking, and how does
Station (BTS)? it facilitate communication between
devices within the same subnet?
6. Explain the significance of HTTP
Chapter Summary (Hypertext Transfer Protocol) in the
context of web communication, and
Reflect on what you have learnt from how its features contribute to the
this chapter, summarise and keep it in browsing experience for end-users.
your portfolio. 7. What are the primary differences
between FTP (File Transfer
Protocol) and HTTP in terms
Revision Exercise 3 of their functionalities, security
features, and suitability for various
file transfer scenarios?
1. Imagine you are troubleshooting a
network connectivity issue. How 8. Given a network with the IP address
can your knowledge of the OSI 192.168.1.0/24, how many subnets
and TCP/IP models assist you in can be created using a subnet mask
identifying the problematic layer? of 255.255.255.192, and what are
2. New technologies are continually the valid IP ranges for each subnet?
emerging. How do you envision the 9. In a network with the IP address
OSI and TCP/IP models needing range 172.16.0.0/16, how many
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Student’s Book Form Five
Computer Science Form 5.indd 209 23/07/2024 12:33
