IT263-finalreview FOR EXAM PDF

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exam review before final and explanation...

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IT 263-601 Final Exam Review Guide Spring 2020 75 points  

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Take-Home Exam will be available: Sunday, June 7 at 3:00 pm: The IT 263 Final Exam will be a Word (.docx) document in a D2L Final Exam Submissions folder. The Exam document will contain around 12-15 questions. Download the document, edit it with your name and answers, and submit as Word (or PDF) file to the Final Exam folder on D2L Submissions.

 Exam Submission Deadline: Tuesday, June 9 at 3:00 pm.  Late submissions will not be accepted.  Notes:  You may use whatever materials you wish during the exam, e.g., notes, HWs, labs, answers sheets, Cisco ITN, etc.  No Team Work  Students must complete the exam alone. You are not permitted to communicate with anyone else about the Exam. If multiple students submit answers that are substantially identical or there is other evidence of collaboration, then this will be investigated.  Evidence of Comprehension – Use Your Own Words  You should write your own sentences in your answers. If an answer consists only of phrases that are copy-and-pasted from course materials or websites then it may receive a reduced score because it does not clearly demonstrate comprehension.  Exam Questions  The questions on the exam will be short-answer questions – similar to the Homeworks and the Midterm. There will be no true/false or multiple choice.  There will be 12-15 questions on the exam. No true/false or multiple choice. Each question will be taken from one of the topics in the list below. 

Things you should be able to explain:

1.

Network Address Translation (NAT) a) Why is NAT necessary? b) Basic NAT router operation i) How are outgoing packets (internal network -> Internet) modified? ii) How are incoming packets (Internet -> internal network) modified? IPv6 protocol a) Format of IPv6 addresses

2.

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3.

b) Link-local vs. global addresses c) How Interface IDs are determined d) Router Advertisements (RA) packets – what they are used for. e) Purpose of Neighbor Solicit packets f) Contents and purpose of Neighbor Table Security a) Basic types of security: Computer, Information and Network security b) Malware i) Types of malware: viruses, Trojans, worms ii) Common malware: keystroke capture, spyware, ‘bot’ software iii) Distribution methods iv) Social engineering and phishing c) Network attacks i) IP spoofing ii) Port scanning a) What are ‘open’ TCP/UDP ports? iii) Denial of service attacks a) Smurf attack b) TCP SYN flood iv) Dialog attacks a) Attacker-in-the-middle b) ARP poisoning c) DNS cache poisoning d) Router table poisoning d) Encryption i) The importance of key length to discourage brute force attack ii) Symmetric (Private) Key cryptography a) Basic properties of DES, AES, WEP, WPA, WPA2, WPA3 iii) Public Key cryptography a) Basic concepts – what do Public and Private keys do? b) Advantages/Disadvantages over Symmetric Key encryption c) What is Checksum, Message Hash or HMAC and how is it used? d) What is Digital Signature and what is it used for? e) What are the elements of a Digital Certificate / SSL Certificate? e) Authentication i) What is authentication? ii) Advantages and disadvantages of using passwords iii) Token authentication iv) Biometric authentication v) Authentication using Digital Signatures f) Firewalls i) Differences between Packet Filtering, Stateful and Proxy firewalls ii) Purpose and contents of firewall rules table iii) What is a DMZ g) Intrusion Detection Systems i) What is an IDS? ii) How is it different than a firewall? iii) Explain each type of IDS – Host-based, network-based, signature-based, anomaly-based

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h) Virtual Private Networks (VPNs) i) What is a personal VPN? ii) What is a remote-access VPN? iii) What is a site-to-site VPN? iv) How does an IPsec VPN work? v) How does an SSL VPN work? 

Things you should be able to do:

1. Homework problems a) Be able to do any of the homework problems on HW #1 – HW #4 with different network diagrams and/or different data values. 2. IP Subnets a) Given an IPv4 address and subnet mask, determine i) Equivalent “/n” value for subnet mask ii) Subnet ID for this IP address iii) Subnet broadcast address iv) List of assignable IP addresses in the same subnet b) Given an IP6 address with /64 prefix length, determine all other IPv6 addresses in the same subnet.

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