Module Three Assignments

Introduction to Broadband Technologies

WAN Technologies

Physical Network Segmentation

Wireless Assignment

Wireless Assignment

Network Types

Part One

  1. What type of high speed network runs over telephone lines?

    2. Digital Subscriber Line, or DSL.

  2. What type of high speed network runs over coax cable?

    3. Cable modem.

  3. Which of the popular types of home high speed networks utilizes non-terrestrial networks that typically have high latency?

    4. Satellite Internet.

Part Two

  1. What was Bluetooth orignally designed to replace?

    2. It was originally intended to replace wires.

  2. What type of network would Bluetooth create?

    3. It creates a Personal Area Network, or PAN.

Wireless Networking

Part One

  1. What is the IEEE family of standards for wireless networking?

    2. The IEEE is a standards organization that determines how wireless networks are to operate. It is a consortium of different people and companies collaborating to decide on how the technology should work. There are four IEEE standards for wireless networking: 802.11a, 802.11b, 802.11g, and 802.11n.

  2. How do the different members of the 802.11 family differ?

    3. They differ in speeds, distance, channels, and frequencies. The following table demonstrates the differences between members of the 802.11 family:

    The 802.11 Family
    Standard
    Frequency
    Maximum theoretical throughput
    Approximate range
    802.11a 5 GHz 54 Mbps 35 meters
    802.11b 2.4 GHz 11 Mbps 38 meters
    802.11g 2.4 GHz 54 Mbps 100 meters
    802.11n 5 GHz and/or 2.4 GHz 600 Mbps 300 meters

  3. Which 802.11 standard utilizes MIMO?

    4. 802.11n utilizes mulitple-input multiple-output, or MIMO.

  4. Which 802.11 standard represents an improvement, and backwards compatibility, with 802.11b?

    5. 802.11g.

Part Two

  1. What was the original encryption utilized by 802.11?

    2. Wired Equivalent Privacy, or WEP.

  2. When were WEP cryptographic vulnerabilities identified?

    3. WEP vulnerabilties were identified in 2001, allowing an attacker to crack into any WEP connection in just a few minutes.

  3. What type of encryption was created to improve on WEP but utilize the same hardware?

    4. Wi-Fi Protected Access, or WPA, which is build on Temporal Key Integrity Protocol (TKIP).

  4. What type of wireless encryption is based on the Advanced Encryption Standard (AES)?

    5. WPA2 utilizes AES.

Part 3

  1. In wireless networking, what is an SSID?

    2. SSID is Service Set Identifier, which is a name that is assigned to the name of a wireless network. It should be changed from its default name to something less obvious.

  2. Disabling SSID is an important security configuration.

    3. This is untrue, as it is only hiding the information.

  3. What is the general security term used to describe the disabling of SSID broadcast?

    4. The term used to describe disabling SSID broadcast is "security through obscurity", though this means it is only hidden and can still be found.

  4. Can MAC addresses be spoofed?

    5. Yes - MAC addresses are not encrypted and can be spoofed.

  5. What wireless networking standard supports speeds up to 600 megabits per second?

    6. 802.11n.