Lecture 26: Wrap-Up
Transcript of Lecture 26: Wrap-Up
COSC301 Lecture 26: Wrap-up 1
COSC 301 Network Management
Lecture 26: Wrap-Up
Haibo Zhang
Computer Science, University of Otago
COSC301 Lecture 26: Wrap-up 2
Topics• Networking concepts such as OSI, TCP/IP, deamon,
etc.• File system: soft link, hard link, protection bits, inodes,
superblock, sticky bit, etc.• System installation: boot procedure, startup scripts,
hard disk, Linux/Unix directories, etc.• Network daemons/services: inetd, tcpd, crond, klogd,
syslogd, exim, sshd, ftpd• Principles such as least privilege, tools, and common
sense for system/network administration.• Scripting skills
COSC301 Lecture 26: Wrap-up 3
Topics (cont.)• Network devices: router, switch, hub, gateway,
firewall, etc.• Wireless networking: standards, topologies and
installation.• DNS and IP address assignments: DHCP• WWW and Emails• TLS and SSH• Network security: authentication protocols, policies,
attack examples, measures.• Firewall: IP tables, NAT, masquerading, port
forwarding, etc.• Various interior/exterior routing protocols: RIP, OSPF,
BGP, eBGP, iBGP
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Topics (cont.)• IP accounting and traffic measurement• Management protocols and tools: SNMP• Methods for fault diagnosis
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General • Emphasize understanding, rather than memorizing in
final examination!• Write in the space provided. • No calculators • No books, notes, or other material. • 3 hour exam
You need to get >40% to pass the paper!
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Question templates (cont.)• Explain why it is necessary for a hard disk to be
partitioned. (4 marks)• Answer:
– (2 marks) for installation of different OS, easy for system upgrade
– (2 marks) to separate different file systems, easy for maintenance of file systems and good for protection among different files systems.
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Question templates (cont.)• List the pros and cons of …• Give two benefits of …• Given a situation, explain why or why not?• Get a copy of past exams from the library.• Almost one question per lecture, usually the issues
discussed in more details will be examined.
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Where to go from here?• TELE402
– UNIX/Linux network programming API• Socket API
– Make robust, high performance Internet applications– Wireless sensor networks– Advanced networking technologies:
• Datacenter networking• 5G networks• On-chip networks• Li-Fi• Internet of things
– http://www.cs.otago.ac.nz/tele402
Introduction of LiFi§ Disadvantages
Ø Li-Fi doesn’t work in the darkØ cannot move to other rooms unless there are
wired bulbs tooØ low-mobilityØ small-coverage
• Jan. 2013, Intel announced the use of a silicon photonic architecture to define the next generation of servers
• Apr. 2013, Intel demonstrated its first inexpensive optical chip
• In 2015, IBM to demonstrate first on-package silicon photonics", Mar 2015
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Challenging Problems