Module 4 Flashcards
What organization defines service and protocols in the TCP/IP suite?
IETF
Name 5 organizations that implements physical layer standards?
ISO, ANSI/TIA, ITU-T, ANSI, IEEE
What are the 3 functional areas of physical layer standards?
Physical Compnonents
Encoding
Signaling
What is a method of converting a stream of data bits into a predefined “code”?
Encoding
Define codes.
A predictable pattern that can be recognized by both sender and the receiver.
Define signaling.
When a “1” or “0” is created by electrical, optical or wireless signals
What refers to the amount of time, including delays, for data to travel from one given point to another?
Latency
What is the measure of the transfer of bits across the media over a given period of time?
Throughput
What factors influence throughout?
(1)The amount of traffic
(2)The type of traffic
(3)Latency created by the number of intermediate devices
What are the 2 sources of interferences for copper cabling?
(1) EMI and RFI
(2) crosstalk
How do some copper cancel crosstalk?
By having opposing circuit wire pairs twisted together
Name the 3 types of copper cabling.
UTP, STP, Coaxial
How does UTP counter EMI and RFI?
Cancellation with wire pairs and varying the number of twists per wire pair
What organizations conforms UTP cabling?
TIA/EIA
What is the most commonly used cabling and is used to connect host to a switch and a switch to a router?
Ethernet straight through cable
