Transmission & Networking Media Flashcards
In reference to computers and the internet, what is an appropriate analogy for throughput?
Throughput is like a clogged artery
What does Mbps stand for?
Mbps stands for megabits per second
In reference to computers and the internet, what is throughput?
Throughput refers to the actual speed of your data
In reference to computers and the internet, what is bandwidth?
Bandwidth is the theoretical speed of your data
The link efficiency of a channel is 0.2 and bandwidth is 4000hz. What is the throughtput?
800hz
What is the link efficiency of full duplex?
More than 50%
The frequency range of a channel is 4000hz to 6500hz. What is the bandwidth?
2500 hz
What kind of channel does broadband transmission use?
Bandpass channel
Which is a standard connector for unshielded twisted pair cable that resembles RJ-11 telephone jacks?
RJ-45
CAT 3 and CAT 5 belong to which of the following cable categories?
Shielded twisted pair cable
Which of the following connectors are also used with multimode and single-mode fiber optic cables for accessing gigabit ethernet?
MT-RJ
Crosstalk and attenuation are NOT a problem in which of the following media?
Fiber optic cable
Which of the communication channel types would be the ideal choice for making a phone call?
Full-duplex
Which one of the communication channels allows for data to be sent and received in both directions, but not at the same time?
Half-duplex
Which service would a simplex channel be ideal for?
All answers are correct
Why is it important to know the three types of communication in networking?
All answers are correct
What does throughput mean?
Throughput is the actual amount of data you get in a certain amount of time
What does latency mean?
Latency is the delay between when you request data and the time you actually receive it
Which of these is NOT true?
High latency is better than low latency
What does bandwidth mean?
Bandwidth is the theoretical maximum speed of your data
In unshielded twisted pair cables, which category starts being able to push gigabit network speeds (1000+ Mbps)?
CAT5e
Which of these is the most common cable type to connect a home network to a cable modem using an internet service provider?
Coaxial
When internet service providers use fiber optic cables, which cable type are they most likely to use for home networks?
Plastic optical cable
What is the main advantage of using a shielded twisted pair (STP) cable for a network connection?
To cut back on electrical interference
What part of an optical fiber cable reflects light back into the core as the cable bends?
Cladding
The type of fiber used typically for long distance runs is:
Single-mode
The core strand of an optical fiber can be made of what type of material?
Glass or Plastic
An advantage of optical fiber over traditional copper wiring is:
Less bulk
Many family members using the network connection at the same time reduces:
Throughput
What is simplex mode of communication?
Only one sender and receiver
