Implementing Networks

Question 1

What’s a Hybrid Coax Cable? What is a Cable Internet Service and what components are used?

Answer 1

• IS a combination of Fiber Optics and Coaxial Cable.
• Cable Internet Service is a way to transmit data from a large network via the use of copper coaxial cables and a modem.

Question 2

What is Fiber Optic Internet Service? What’s the difference between FTTH and FTTC? What device provides an internet connection with this service?

Answer 2

• Fiber Optic Internet Service is a way of connecting to the internet via small thing glass tubes that transmit data in the form of light; provides fastest throughput.
• FTTH (Fiber to the Home) offers fastest and reliable internet service within a home.
• FTTC (Fiber to the Curb) offers a fiber optic connection to a central point in a local area that connects to existing copper phone lines.
• Modem.

Question 3

What is a DSL Internet Connection? What components are involved and what are two important aspects of it?

Answer 3

• Is an internet connection that is provided by connecting to existing telephone lines.
• RJ 11 Cables + Modem enable a connection to the internet and enable telephone services.

Question 4

What are two ways of connecting to the internet wirelessly? How do they work?

Answer 4

• Satelite involves connecting to a satelite dish to an orbiting satelite via wireless signals. Used in remote and rural areas where other forms of internet connection isn’t available.
• Cellular Based Services uses electromagnetic waves from a cell tower to connect devices to a network. Different generations of Cellular internet services includes 3G,4G and 5G.

Question 5

What are the 5 IEEE WIFI standards and what are their respective bands?

Answer 5

• 802.11a = 5GHz.
• 802.11b = 2.4 GHz.
• 802.11g = 2.4 GHz.
• 802.11n = 2.4 + 5GHz.
• 802.11 ac = 5 GHz.

Question 6

What are the following Wifi security standards? Which one is the most secure?

Open(Captive Portal), WEP, WPA, WPA2

Answer 6

• Open Network is a way of connecting to a network with no authentication or credentials to access it. Captive portal is a webpage that will authenicate and validate access to the network once the user confirms terms and conditions.
• WEP is older and weaker encryption.
• WPA is more secure than WEP, requires a password or key to access the network and transmit data.
• WPA2 uses an encryption technique called AES (Advanced Encryption Standard) + password or key.

Question 7

What are some things one can do to secure a wireless network?

Answer 7

*** Disable SSID broadcasting.
* MAC filtering.
* Modify default passwords to complex passwords.
* Setup a guest network seperate from Main Network. **
* Updating Router’s Firmware.
* Enable Wireless Isoaltion.
* Disable WPS settings.