Implementing Networks Flashcards
How does fiber optic internet work?
Uses tiny strands of glass to transmit information as pulses of light,
allowing data to move at, quite literally, the speed of light
Describe FTTH
o Fiber to the Home (FTTH) has the fastest and most reliable connection
Describe FTTC
o Fiber to the Curb (FTTC) combines fiber optic cables with existing copper
telephone cabling using Very High Bit Rate DSL (VDSL) technology
What does the cable internet service use to work?
o Coaxial Cables/Coax
▪ Copper cables that are designed in a specific way to transport data from
the larger network directly into homes or offices
o Cable Modem (Combined Modem/Router)
▪ Device that connects home to the cable network
What are the advantages of Cable Internet?
o Advantages of using cable internet
▪ Widely available
● Cable companies use the same infrastructure for Internet service
that they use for cable TV, it’s relatively simple for them to offer
Internet service to existing cable customers
▪ Speed
● Often faster than DSL, satellite, cellular, and other types of
Internet connections, especially when it comes to download
speeds
● This makes it ideal for activities that require a lot of bandwidth,
like streaming high-definition videos, playing online games, or
downloading large files
What are the disadvantages of cable internet?
o Disadvantages of using cable internet
▪ Expensive
▪ Not available anywhere
● Although it’s widely available, it’s not available everywhere
● Rural areas, in particular, may not have access to cable Internet
▪ May experience a slowdown during peak usage periods
What is DSL internet service?
Digital Subscriber Line
In essence, you can use your telephone line to make calls and surf the web at the
same time, all without interference
What is the main advantage of DSL internet?
o One of the most important benefits of DSL is its widespread availability
▪ This has made it a go-to choice for rural or remote locations that are
typically underserved by other broadband options
What is ADSL?
Asymmetric DSL
The term “asymmetric” comes from the fact that the download speed or
‘downlink’ is faster than the upload speed or ‘uplink’
What is wireless internet service?
● Microwave Satellite
* This capability is possible thanks to orbital satellites, which
relay signals from one point to another, even directly to
your home or business
● Cellular Radio-based Services
* Most of us associate this more with internet access for cell phones and smartphones
Explain the difference between 3g, 4g, and 5g?
▪ 3G (Third Generation)
● Faster data rates
● Video calling
● Mobile internet
▪ 4G (Fourth Generation) LTE and LTE-A
● Increase data rates
● Speed increases
● HD mobile TV
● Video conferencing
▪ 5G (Fifth Generation)
● Higher speeds
● Lower latencies
● Enabling applications
What is IEEE 802.11?
Wireless Fidelity (Wi-Fi)
What are the iterations of WiFi, in order?
This standard has undergone multiple iterations – a, b, g, n, ac, and ax,
with each one improving upon the previous version in terms of speed,
range, and reliability
Explain WEP?
o Wired Equivalent Privacy (WEP)
▪ Aimed at providing security similar to wired networks
Very weak
What is WPA, WPA2, and WPA3?
Wi-Fi Protected Access
- Developed to improve on WPA
Wi-Fi Protected Access 2 (WPA2)
▪ Employs a more encryption technique known as AES (Advanced
Encryption Standard)
o Wi-Fi Protected Access 3 (WPA3)
▪ Introduces Simultaneous Authentication of Equals (SAE), which protects
against ‘dictionary attacks’
