Final Exam Started: Aug 13 at 9:33pm Quiz Instructions This final exam has multiple choice, short answer, fill in the blanks and numerical problem questions worth a total of 101 points. Students will not always receive the same questions. Students will see the answers to the same question in different orders. You have 180 minutes. […]
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Slide 1 1 Networking DNS © Janice Regan, 2006-2013 © Janice Regan, 2006-2013 2 DNS The primary use of DNS is to answer queries requesting the IP address that corresponds to a given host name. © Janice Regan, 2006-2013 3 Operation of a DNS server A DNS name server is initialized, knowing the addresses of
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Slide 1 1 Networking DNS © Janice Regan, 2006-2017 © Janice Regan, 2006-2017 2 Database / authoritative servers When a authoritative master or slave DNS server is initialized it loads a configuration file which associates domain names with data files containing DNS resource records for that domain For linux systems that file is usually /etc/named.conf,
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Slide 1 1 Networking DHCP © Janice Regan, 2006-2013 © Janice Regan, 2006-2013 2 Bootstrapping Autoconfiguration Bootstrapping is a process by which a client (diskless or with limited storage) can obtain information ranging from IP addresses to bootloading files (from a server or servers) Bootstrapping uses this information to load OS into volatile storage and
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Microsoft Word – midterm2sol.docx Midterm 2 CMPT 471 SOLUTION 1. [2 points] The checksum of a TCP packet is determined using a pseudo-header that contains the IP source and destination addresses. This pseudo-header is prepended before the UDP or TCP header and is sent as part of the packet True False 2. [2 points] Address
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Slide 1 1 CMPT 471 Networking II ICMPv6 © Janice Regan, 2012-2018 Calculating the checksum For ICMP the ICMP header and message are considered when the checksum is calculated Break the data described above into 16 bit blocks. Consider each of the blocks as an integer. (checksum field should be 0) Calculate the ones complement
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Microsoft Word – assignment2key.docx CMPT 471 Assignment 2 SOLUTION 1) Explain how you would set up a simple laboratory experiment to capture and display in Wireshark each of the following ICMPv6 messages. a) [10 points] IPv6 destination unreachable/address unreachable: b) [10 points] IPv6 router solicitation and the resulting router announcement/s followed by periodic router announcements
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Microsoft Word – 471quiz4sol.docx QUIZ 4 CMPT 471 SOLUTION 1. [3 points] What is the difference between a capture filter and a display filter when you are using wireshark? Your answer should be no more 3 sentences long. A capture filter is applied to incoming packets before saving packets to a file. (1 point) If
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Slide 1 1 Networking DNS © Janice Regan, 2006-2017 © Janice Regan, 2006-2017 2 Host names In addition to identifying a host by the IP address of a connected interface we also identify the interface by an hostname Hostnames are easier for a human to use and remember that the IP address In the early
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Lecture 5 DCF255 Page | 12 Internet Layer The Internet layer accepts all input from the Transport layer as data. To the data, it adds a header which includes the IP address of the source and destination computer. The Internet layer is responsible for routing of the datagram from source to destination, deciding the best