CS522 F2006 Midterm Review

CS522 F2006 midterm will be on-line examine. 10/11, 4:30-11:59pm. Open book, Open note.
Use your CS Unix login as username followed by 9 digits of your student ID as password.

CS522 F2003 midterm CS522F2003midterm Solution web page.

CS522 F2002 Midterm Solution web page.
CS522 S2002 Midterm web page; S2002 Solution web page.

• Computer network architecture
• Messages Generated for a Simple Web Access
• What protocol is used by a machine to find the gateway's MAC address?
• Example of Internet Message Format
• OSI seven layer model, the basic function of each layer
• Which layer is SSL in the seven layer model?  What is its main function?
• PDU encapsulation/decapsulation. How does the receiving side protocol entity know which upper layer entity to send the data? How does the network software that implements TCP protocol know a particular packet should be delivered to Telnet or FTP application?
• Network Access Point (NAP).  What is their function?
• IP address and their format; Classful address, Classless address (two notations: 128.198.161.0/21 or 128.198161.0 netmask 255.255.248.0).
• Given a network address, decide how many hosts can be assigned to that network.
• How to avoid using up all IPv4 addresses?
• Domain Name System (DNS)
• What transport protocol is used by DNS query and response?
• If local name server can not find the entry for a domain name,  where it goes to find the corresponding IP address?
• Basic web access steps: as an example of network applications.
• How you decide the boundaries of the fields in ethernet, IP, and TCP  headers?
• Are they different from that of HTTP?
• End Host Routing and PC network setup.
• Use Ethereal to Capture/Compare Packet Sequence of Telnet/SSH sessions.

• CFSM
• Alternating Bit Protocol and Protocol Simulation
• Reachability Analysis. What errors it can catch? What are its disadvantages?

• Internet Domain Socket
• Stream vs. Datagram
• Select()
• Trade of using fork(). When to use and when not to use?
• How to handle Byte Ordering Problem in network communications.

What functions in socket library deal with the byte ordering problem?

• Signal Constellation Diagram and Modem
• PCM
• Amplitude, Frequency, and Phase of a Signal.