Chapter 4: The Physical and Data
Link Layers Exam 2025 Questions
and Answers
Frame Format - ANSWER✔✔-Is what defines the structure of the 1's and 0's being
transmitted.
Reliability - ANSWER✔✔-The availability and integrity of the data transmission.
Frequency - ANSWER✔✔-The number of complete waves that pass a given point in a
certain amount of time
Hertz - ANSWER✔✔-One electrical energy cycle from positive voltage (1) to negative
voltage (0).
Four most common types of transmission media: - ANSWER✔✔--Copper Unshielded
twister-pair(UTP) & shielded twisted-pair (STP)
-Coaxial Cable
-Glass/Fiber Optics
, -Air
Unshielded Twisted Pair (UTP) - ANSWER✔✔-Networking cable that has four twisted
pairs of copper wire and a flexible outer coating.
Shielded Twisted Pair (STP) - ANSWER✔✔-Copper network cable that has two or four
pairs of twisted wires shielded by a braided mesh and covered with an outside coating.
Coaxial Cable - ANSWER✔✔-insulated copper wire; used to carry high-speed data
traffic and television signals
RG-6 - ANSWER✔✔-Typically used for home audio, video, and TV transmission
equipment.
RG-58 - ANSWER✔✔-Used for RF transmissions and antennae cabling to radio
equipment.
RG-58/U - ANSWER✔✔-10bASE2 Ethernet, also known as Thinnet.
RG-59/U - ANSWER✔✔-Closed circuit television (CCTV) transmission to monitors.
RG-8U - ANSWER✔✔-10Base5 Ethernet, also known as Thicknet.
RG-60U - ANSWER✔✔-High Definition television (HDTV) and high-speed cable
modems.
Fiber Optics - ANSWER✔✔-signals carried by light beams over glass fibers
Link Layers Exam 2025 Questions
and Answers
Frame Format - ANSWER✔✔-Is what defines the structure of the 1's and 0's being
transmitted.
Reliability - ANSWER✔✔-The availability and integrity of the data transmission.
Frequency - ANSWER✔✔-The number of complete waves that pass a given point in a
certain amount of time
Hertz - ANSWER✔✔-One electrical energy cycle from positive voltage (1) to negative
voltage (0).
Four most common types of transmission media: - ANSWER✔✔--Copper Unshielded
twister-pair(UTP) & shielded twisted-pair (STP)
-Coaxial Cable
-Glass/Fiber Optics
, -Air
Unshielded Twisted Pair (UTP) - ANSWER✔✔-Networking cable that has four twisted
pairs of copper wire and a flexible outer coating.
Shielded Twisted Pair (STP) - ANSWER✔✔-Copper network cable that has two or four
pairs of twisted wires shielded by a braided mesh and covered with an outside coating.
Coaxial Cable - ANSWER✔✔-insulated copper wire; used to carry high-speed data
traffic and television signals
RG-6 - ANSWER✔✔-Typically used for home audio, video, and TV transmission
equipment.
RG-58 - ANSWER✔✔-Used for RF transmissions and antennae cabling to radio
equipment.
RG-58/U - ANSWER✔✔-10bASE2 Ethernet, also known as Thinnet.
RG-59/U - ANSWER✔✔-Closed circuit television (CCTV) transmission to monitors.
RG-8U - ANSWER✔✔-10Base5 Ethernet, also known as Thicknet.
RG-60U - ANSWER✔✔-High Definition television (HDTV) and high-speed cable
modems.
Fiber Optics - ANSWER✔✔-signals carried by light beams over glass fibers
