Chapter 3: Physical Layer Flashcards
- Circuit configuration is the basic physical layout of the circuit. There are two fundamental circuit configurations: Point-to-Point and Multipoint. - Multipoint Circuit: In this configuration, many computers are connected to the same circuit. Also called a shared circuit. - Data Flow - Simplex transmission is one-way transmission, such as that with radios and TVs. - Half-duplex transmission is a two-way transmission, but you can transmit in only one direction at a time, such as a w (11 cards)
Data is physically transmitted from one computer or terminal to another in which layer?
Physical
Fill in the blank
A _______ circuit is another name for a multipoint configuration
Shared
What are two basic types of media?
Guided and Wireless (radiated)
Which would be considered a type of wireless media?
a. Unshielded twisted pair
b. Shielded twisted pair
c. Coaxial cable
d. Microwave
e. Fiber optics
Microwave
Which of the following media can best withstand hard environmental conditions:
a. Shielded twisted pair
b. Unshielded twisted pair
c. Cat 5 twisted pair
d. 4. Coaxial cable
e. Fiber optic cable
Fiber Optic Cable
What are the two fundamental circuit configurations?
Point-to-Point & Multipoint/Shared Circuit
What are the three different forms of Data Flow?
Simplex, Half-Duplex, Full-Duplex
True or False
Half-duplex is a one-way transmission
False
It’s a two-way transmission, only transmits in one direction at a time
True or False
Simplex is when you transmit in both directions simultaneously
False
It’s a one way transmission
True or False
Full-duplex is when you transmit in both directions simultaneously
True
True or False
Attenuation is the weakening of a signal over a distance
True
