What are the variations between the two types of Access Lists, Standard and Extended? How does one really perform packet filtering?
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What are the variations between the two types of Access Lists, Standard and Extended? How does one really perform packet filtering?
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- What is the main distinction between the Standard and Extended Access-lists? How does packet filtering work?In what ways are Standard and Extended Access Lists different?How is packet filtering implemented?Which function is more important?What are the best software packet filtering techniques beyond the bare requirements?
- DNS makes use of UDP rather than TCP. If a DNS packet is dropped, there is no way to recover automatically. Is this a problem, and if so, how does one go about resolving it?What exactly is meant by the term "Routing," and how is it implemented in practice?How are connectionless protocols used, and what are their benefits and drawbacks in comparison to connection-based protocols?
- One of the techniques used in transport layer protocols is the receipt of acknowledgements (such as the RDT 2.0 protocol that we covered before). Is it possible for an acknowledgement to be contaminated in any way? What process has been put in place to deal with this situation?The popularity of internal and external routing protocols in the contemporary era can be attributed to several factors?What kinds of packets can cause problems for even a stateful packet filter?
- What exactly is a random access technique, and which two protocols come within it?Most IP datagram reassembly algorithms have a timer to avoid having a lost fragment tie up reassembly buffers forever. Suppose that a datagram is fragmented into four fragments. The first three fragments arrive, but the last one is delayed. Eventually, the timer goes off and the three fragments in the receiver's memory are discarded. A little later, the last fragment stumbles in. What should be done with it?Why do protocols like HTTP, FTP, SMTP, and POP3 use TCP instead of UDP? When comparing Routing and Forwarding, what are the key distinctions? How does HOL blocking work? Where does it happen, the input or the output?