17 Questions
What is the purpose of a repeater in a network?
Increase the distance a digital signal can travel
Which of the following represents the signaling method used over fiber-optic cables?
Light Pulses
What does encoding achieve in the context of digital data transfer?
Converts bits into a recognizable format for the next device
In digital signal encoding, what does Nonreturn to Zero-Level (NRZ-L) refer to?
A way to represent binary digits using voltage levels
What is the primary benefit of using two distinct voltage levels for binary digits in digital transmission?
Improves signal recognition by the next device
What role does a network interface card (NIC) play in physical layer communication?
Facilitates communication between a device and the network
What is the primary purpose of the Physical Layer in a network?
To accept complete frames from the Data Link Layer and transmit them to the local media
Which of the following is NOT considered a Physical Layer component?
Routing and switching devices
What is the role of Encoding in the Physical Layer?
To translate the binary data into electrical, optical, or radio frequency signals
What is the role of Signaling in the Physical Layer?
To define the electrical, optical, or radio frequency characteristics of the transmitted signals
Which of the following is a primary function of a Network Interface Card (NIC) in the Physical Layer?
To convert between digital and analog signals
What is the primary purpose of the physical layer in a data network?
To establish and maintain the physical connection between devices
Which of the following is NOT a characteristic of the physical layer in a data network?
Manages the logical addressing and routing of data packets
What is the primary function of a Network Interface Card (NIC) in a data network?
To establish and maintain the physical connection to the network
Which of the following is a key characteristic of the physical layer's encoding and signaling functions?
It specifies the electrical, mechanical, and functional requirements for the physical connection
What is the primary advantage of using fiber-optic cabling in a data network compared to other physical media?
Fiber-optic cables offer higher data transmission rates and longer distances
Which of the following is the primary function of the signaling mechanism in the physical layer?
To convert the digital data into electrical or optical signals for transmission
Learn about the purpose of the Physical Layer in computer networks, including its role in transporting bits across network media and encoding frames. Explore the different functional areas addressed by Physical Layer Standards.
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