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The internet is the world’s largest network - Edexcel - GCSE Computer Science - Question 7 - 2019 - Paper 1
Question 7
The internet is the world’s largest network. (a) One function of a router is to forward data packets from one network to another across the internet. Describe how a... show full transcript
Worked Solution & Example Answer:The internet is the world’s largest network - Edexcel - GCSE Computer Science - Question 7 - 2019 - Paper 1
Step 1
Describe how a router carries out this function.
Answer
A router operates by examining the headers of data packets to determine their destination addresses. When a packet arrives at the router, it checks the destination address against its routing table, which contains information about the possible paths to various networks. Based on this information, the router uses algorithms to choose the most efficient path for forwarding the packet.
Once the best path is determined, the router forwards the packet to the next network node on the route toward its final destination. This process may involve sending the packet through multiple intermediate routers, each performing similar functions until the packet reaches its target.
Step 2
Explain why it is important to review network and user policies.
Answer
Reviewing network and user policies is crucial for several reasons. First, it ensures that the policies remain relevant and effective in responding to evolving security threats and compliance requirements. Regular reviews allow organizations to adapt their policies to changes in technology and user behavior.
Additionally, reviewing these policies helps maintain clarity among users about acceptable behaviors and responsibilities, thereby minimizing the risk of misuse or accidental breaches of the network. Strong policies also support efficient network operation and contribute to the overall security posture of the organization.