Exam Areas - ECE-3076 Topics to Review for the Final Exam...

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ECE-3076 Topics to Review for the Final Exam Final Version 12/4/2009 13:30
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Chapter 1 - The Internet Autonomous Systems (AS) - connected by ISPs (tiers) Block(s) of IP addresses assigned (subnets) by IANA Domain Names - assigned by Registrars (Verisign, Two Cows, …) to AS's, Companies, Individuals. Used in Universal Resource Locators (URLs) Authoritative DNS servers (names -> 32 bit no.s) Edge Routers and Firewalls Domain Name System Root, Top Level (.com), Authoritative (AS's), Local DNS servers Recursive, Non-recursive lookups Domain Name Registrars ("whois", "nslookup") Parts of URL like www.csc.gatech.edu (host,subnet, domain) Dynamic DNS, reverse lookups, mx lookups, canonical vs. alias names
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Chapter 2 - Applications and Application Layer HTTP (Web) - get command, "objects", Browser Simultaneous TCP connections, (non-)persistent connection FTP - separate (out of band) control on TCP port 22 original (non-passive) data on TCP 21 with client listening passive - data on high-port/high-port TCP, normal establishment Email - role that email servers play (messages not host to host) SMTP - for sending mail to server, and server to server POP - post office protocol, to check and download email IMAP - ditto, plus store mail in many folders on server Web Mail - uses browser as interface to Email Server. (HTML formatted email can bear malicious applications) Peer-to-Peer Network - no central server, or limited-function server. " Socket " - the OS interface between the Application Layer and the Transport Layer (TCP, UDP, etc.). Defined by Source and Destination IP addresses and S&D Port numbers (4 items, and TCP or UDP). Servers also have a "Listening Socket" to receive initial contacts from new IP, Source Port combinations.
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Chapter 3 - Transport Layer UDP, TCP port numbers, server and client Sockets, "Listening Socket" for server Connections - how defined (IPs and Ports) TCP - reliable connections Initiation - SYN and SYN-ACK, end - FIN or RST (reset)
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Exam Areas - ECE-3076 Topics to Review for the Final Exam...

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