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Data Communications Fundamentals

Assignment 3 sample answers posted
Please check regularly for updates.

COMPSCI 314 S2 T 2009

Prerequisites	COMPSCI 210. (Students will also find some material from COMPSCI 215 and COMPSCI 220 to be helpful.)	Planning Note: Due to future adjustments to the curriculum, it is expected that COMPSCI 215 or INFOSYS 224 will be added as a prerequisite for COMPSCI 314 starting in 2011.
Assessment	Final Exam 70%; Test 15%; Assignments 15%  (Passes required in both practical and written work)
Lecturers	Dr Brian Carpenter (Room 587) Assoc Prof Nevil Brownlee (Room 590) Prof Cristian S. Calude (Room 575)
Tutor	DongJin Lee
Class Representative	Jun Seok "Paul" Hur
Time & Location	Tamaki campus, 3 lectures per week: Tue 9:30 a.m. - 10:30 a.m.,  Room 722-201 Thu 9:30 a.m. - 10:30 a.m.,  Room 722-201 Fri 9:30 a.m. - 10:30 a.m.,  Room 722-201
Recommended Text	William A. Shay, "Understanding Data Communications and Networks," Thomson*Brooks/Cole (3rd Edition)    The course is mostly based on the text; you should plan to read the sections from it that are covered in the course. Note, however, that other material (e.g. Peer to Peer) is not covered in the text – suitable web references for such material will be given in lectures.
Description	The fundamentals of data communications and computer networks, concentrating on the layered model up to and including the Transport Layer (Level 4). It includes Local Area Networks, Internet Protocols (TCP/IP) and some applications such as Email and Peer to Peer, to give an understanding of how Internet services are provided over the layered model.
Contents	The course will be based on the textbook, i.e. lectures and assignments are aimed at directing students to the relevant sections of the textbook. Some sections of the textbook are not covered in the course. The Lectures page will list the sections that are intended to be covered. Expected topics include: the layered model, physical transmission techniques and coding, data security and integrity, protocols, local area networks, wide area networks, routing, TCP/IP and Internet applications.

You may look at the Archive section to see material from earlier years. 

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Office Hours and Contacts

DongJin's office is 303.596. Available from 1 p.m. to 5 p.m. on Friday, or by email anytime.

Brian Carpenter is glad to answer email questions. See here for office hours.

Nevil Brownlee does not have formal "Office Hours," preferring to have an open door policy, room 303.590, so that students can see him whenever they desire, from about 10 a.m. to 4.30 p.m. If the time is inconvenient he may ask you to come back later, or perhaps make an appointment.

Cris Calude prefers email communication.

We are unlikely to answer email from home, so do not expect responses during the evening.

All email messages must include the class "catalogue" number (314) and your student ID number.

Messages which do not not include this information will be treated as spam.
This applies especially to those from an address such as "happy653@yahoo.com"

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Cheating and Plagiarism

The Department of Computer Science has instituted a general policy on cheating and plagiarism.
Briefly, if we detect material in assignments or projects that appears to be copied from elsewhere,
we will give zero marks for that assignment or project.
Appeals must be in writing to the Head of Department (not to the lecturer).
You may read the official statement of the Departmental policy.

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Exam and Test Information

See exam page for more details.

Exam Date: Saturday 31 October 2009 at Tamaki
Time: 2:15 - 4:30 p.m.

Student bus - don't miss the 1:35 p.m. service from the City, there is no other choice on Saturday.

Test Date: Friday, 14 August 2009
Time: 9:30 a.m. (i.e., usual lecture time)
Surnames   A-O: room Tamaki 722-201 (i.e., usual lecture room)
Surnames   P-Z: room Tamaki 731-201

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Timetable for 2009

This table represents a first estimate of topics to be covered throughout the lectures, together with assignment and test dates. All details are subject to change.

• Lectures are at 9:30-10:30 a.m. on Tuesdays, Thursdays and Fridays, in lecture theatre Tamaki 722-201.
• The dates are the start of each week, with all assignments due on Fridays.
• While this is the general plan of the allocation of topics to each lecture,
  the division and allocation of material is by no means guaranteed.
• Topics may very well move slightly as the course develops.
  The numbers at the start of each lecture entry are just the sequential numbers of the lectures.
• For each topic, the textbook sections we expect to cover are shown on the Lectures page.

Week Starting	Tuesday	Thursday	Friday	Assessment
20 July	1 Introduction	2 Signals	3 Codes	Ass 1 set   (Lab: wireshark)
27 July	4 Analog & Digital	5 Analog & Digital	6 Compression
3 August	7 Compression	8 Data Integrity	9 Data Integrity
10 August	9.1 Data Integrity	10 Encryption	— Test —	TEST:  9:30 a.m.    Fri, 14 August
17 August	11 Authentication	12 Flow Control	13 Flow Control	Ass 2 set   (flow control)
24 August	14 LAN: link      control	15 Ethernet	16 Ethernet	Ass 1 due    Mon, 24 August
31 August 7 September	— Mid Semester Break —
14 September	17 Wireless,      802.11	18 Bridges	19 Switches
21 September	20 Routing	21 Routing	22 IPv4 basics,      ICMP	Ass 3 set   (switch/route) Ass 2 due   Fri, 25 September
28 September	23 IPv4 cont.:     DHCP, ARP,     DNS	24 IPv6	25 TCP
5 October	26 UDP, Sockets	27 TLS, SSH,      FTP, SMTP,      SNMP	28 Peer-to-peer     applications
12 October	29 HTTP,      the Web	30 Loose ends	31 Course      overview	Ass 3 due    Fri, 16 October
19 October	No lectures - just lots of time to study