NYC College of Technology

CST3607: Interconnectivity (Fall 2017)

Assignment Requirements
Required Texts
Class Notes & Assignments : September, October, November, December
Recommended Web Sites and Books[ NoScript ] uBlock Origin
Log into BlackboardExternal Link
Cisco IOS and Router Command Reference
Bit Patterns of Often Used Subnet Mask Values (pdf)
OSI Reference Model (pdf)
IP Address Conversions : Decimal to Base-256 / Base-256 to Decimal


Assignment #1, Due Tues. 9/26/2017

Important note about sending E-Mail to Me
  • Only use the e-mail address I gave you in class to communicate with me.
  • Do not use my address and do not e-mail me via Blackboard.


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Required for all Assignments

  • Make sure that your full name is neatly written on your assignment.
  • Submit a typed hardcopy at the beginning of class.
  • If you use the RTF or DocX template I supply, type your answers in the table below each question.
    • If you do not use the template I supply, make sure your answers stand out from the text of the question. i.e. bold or underlined, not both.
  • Do not double space.
  • Do not type your answers in all uppercase.
  • Print out your assignments before you come to class.
    Do not rely on the printer or network in our classroom to be available or functional.
  • Make sure that the correct assignment number and chapter are on your paper. Be mindful that the assignment number is not always the same as the chapter number.
  • E-mail your assignment only if you are going to be absent, and at least 2 hours before class starts, on the day that the assignment is due. This should ensure that I receive your assignment before the start of class.
  • No late assignments will be accepted.


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Required Text

CCNA Routing and Switching Complete Study Guide: Exam 100-105, Exam 200-105, Exam 200-125, 2nd EditionExternal Link

Author(s): Todd Lammle (
ISBN: 978-1-119-28828-2
Publish date: September 2016
Publisher: Sybex
Also on


Use the LammleSim IOS "IOS CCNA R/S SIM" to practice the hands-on labs.



Reference Texts

Connecting to the Internet: A Practical Guide About LAN-Internet ConnectivityExternal Link

Author(s): Andrew F. Ward
Publisher: Addison-Wesley, 1999. ISBN: 0-201-37956-2
Used copies are available through Amazon.comExternal Link


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Class Notes & Assignments

Tuesday: Aug. 29, 2017
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In Class

Principle of Least Privilege


Stay Informed! News Sources

Studying & Learning Tips


Memorize these Bit Patterns of Often Used Subnet Mask Values (pdf)






































Password Managers


Troubleshooting Client Network Connectivity



Read / Watch


Thursday: Aug. 31, 2017
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PortaPow Fast Charge + Data Block USB Adaptor


Identity Theft is a big problem.


Protocol Review:


Cisco IOS and Router Command Reference


Unicast, Broadcast, Multicast, Anycast


Collision and Broadcast Domains



Microsoft OneNote


Wireless Network Security


Virtual Private Network (VPN)

A virtual private network (VPN) enables users to send and receive data while remaining anonymous and secure online.

In the simplest terms, a VPN is used to create a secure, encrypted connection between your computer and a server operated by the VPN service.






Tuesday: Sept. 5, 2017
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More than 150,000 Internet-facing printers were scanned, located, and used


QuickTime should be uninstalled from all Microsoft Windows systems


2 Factor Authentication



The Electronic Frontier Foundation (EFF) has online tracker-testing in its Panopticlick, helping you analyze the privacy protections in your Web browser.

Web Browser Plugins


Telemetry is an automated communications process by which measurements and other data are collected at remote or inaccessible points and transmitted to receiving equipment for monitoring.


How would you know that a network has been compromised?


Network Analyzer/Packet Sniffer



Universal Plug-and-Play (UPnP)


Types of Ethernet cabling

Autonomous System (AS)





Thursday: Sept. 7, 2017
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Spanning Tree Protocol (STP)


Cisco's Three-Layer Hierarchical Model


Dynamic Host Configuration Protocol (DHCP)


Transmission Method


Discover broadcast --> Client requests an IP address.
The client broadcasts a DHCPDISCOVER message on the physical subnet to find available servers. The client creates a UDP packet with the broadcast destination of or the subnet broadcast address.
Offer <-- unicast DHCP server offers an IP address from its pool.
When a DHCP server receives an IP lease request from a client, it extends an IP lease offer. This is done by reserving an IP address for the client and sending a DHCPOFFER message across the network to the client. This message contains the client's MAC address, followed by the IP address that the server is offering, the subnet mask, the lease duration, and the IP address of the DHCP server making the offer.
Request broadcast --> When the client PC receives an IP lease offer, it must tell all the other DHCP servers that it has accepted an offer. To do this, the client broadcasts a DHCPREQUEST message containing the IP address of the server that made the offer. When the other DHCP servers receive this message, they withdraw any offers that they might have made to the client. They then return the address that they had reserved for the client back to the pool of valid addresses that they can offer to another computer. Any number of DHCP servers can respond to an IP lease request, but the client can only accept one offer per network interface card.
Acknowledge <-- unicast When the DHCP server receives the DHCPREQUEST message from the client, the final phase of the configuration process is initiated. The acknowledgement phase involves sending a DHCPACK packet to the client. This packet includes the lease duration and any other configuration information that the client might have requested. At this point, the IP configuration process is complete.



ARP (Address Resolution Protocol)



Read / Watch




Tuesday: Sept. 12, 2017
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A rash of invisible, fileless malware is infecting banks around the globe

Surveillance Self-Defense is Electronic Frontier Foundation (EFF)'s guide to defending yourself and your friends from surveillance by using secure technology and developing careful practices.


Since Hurricane Katrina, the National Insurance Crime Bureau has offered a free vehicle identification number, or VIN, check service to see if a car has been in a flood. The service is available at A VIN also can be entered into the National Motor Vehicle Title Information System database at

Carfax, which charges $39.99 for a report, is offering its flood-damage database for free post-Harvey. Buyers can check if a car is flood-damaged at


In Class

Neighbor Discovery Protocol (NDP)

Connection-oriented service vs Connectionless service




Rufus: Create a bootable USB from an ISO

XBoot: Create a bootable USB flash drive with multple Live OS's

inSSIDer open-source Wi-Fi scanning software


Read / Do




Thursday: Sept. 14, 2017
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Anti-Virus, or Not?


Subnet zero and the all-ones subnet


Broadcast Address, Wildcard Mask, Block Size practice:


Default Mask vs Mask


Using the Wildcard mask to determine the last address (a.k.a. broadcast address) within a subnet.



Read / Do

Practice, practice, practice:


Practice makes improvement!





Tuesday: Sept. 19, 2017 **TH (Classes follow Thurdsay schedule)
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Google: My Activity





Answer these questions when subnetting:


Using the AND function to determine the network address


Converting a Decimal Number to Base 256  (Dotted-decimal)



Subneting into a Large Number of Subnets

Determine the network address of a high subnet number.

  1. Multiply the target subnet number by the number of addresses per subnet, to get the number of addresses to add to the network address (subnet zero) to jump to the target subnet.
  2. Convert the resulting number of addresses to its Base-256 (dotted-decimal) equivalent.
  3. Add the Base-256 equivalent to the network address, to determine the target subnets address.


Subnetting Tips/Notes







Thursday: Sept. 21, 2017 : (No Classes)
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Tuesday: Sept. , 2017
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In Class




Thursday: Sept. , 2017
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In Class











Tuesday December 19, 2017 ~ Last Day of Class
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Final Exam: Tues. December 19, 2017

(Note: This outline of the final exam will change, so check often for updates as this day approches.)


The final exam includes, but is not limited, to the following:





Recommended Web Sites and Books


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