Podcast
Questions and Answers
What is goodput?
What is goodput?
- The resistance to electrical current flow
- The measure of usable data transferred over a given period of time (correct)
- The amount of time, including delays, for data to travel
- The measure of the transfer of bits across the media
What is the purpose of the Physical Layer in a network?
What is the purpose of the Physical Layer in a network?
- Accepting a complete frame from the Data Link Layer
- Interpreting data on a medium by the receiving node
- Establishing a physical connection to a local network (correct)
- Transmitting data using radio waves
Which factor influences throughput?
Which factor influences throughput?
- Electromagnetic Interference
- Radio Frequency Interference
- Bandwidth
- Type of traffic (correct)
What is a limitation of copper cabling?
What is a limitation of copper cabling?
Which layer does the Physical Layer occupy on the OSI model?
Which layer does the Physical Layer occupy on the OSI model?
In what ways can data be transmitted over a network?
In what ways can data be transmitted over a network?
What does crosstalk refer to?
What does crosstalk refer to?
How is goodput different from throughput?
How is goodput different from throughput?
What type of device connects other devices to a wireless network?
What type of device connects other devices to a wireless network?
What is the most common type of cabling used in networks today?
What is the most common type of cabling used in networks today?
What is the responsibility of the Physical Layer regarding Data Link Layer frames?
What is the responsibility of the Physical Layer regarding Data Link Layer frames?
How does the Physical Layer transport data frames across the network media?
How does the Physical Layer transport data frames across the network media?
What is a factor that can distort and corrupt data signals in copper cabling?
What is a factor that can distort and corrupt data signals in copper cabling?
What is the primary role of a Network Interface Card (NIC) in a network?
What is the primary role of a Network Interface Card (NIC) in a network?
How does goodput relate to traffic overhead?
How does goodput relate to traffic overhead?
Why must a physical connection to a local network be established before network communications?
Why must a physical connection to a local network be established before network communications?
What is the purpose of encoding in the physical layer?
What is the purpose of encoding in the physical layer?
Which encoding method represents a high-to-low voltage transition as a 0 bit?
Which encoding method represents a high-to-low voltage transition as a 0 bit?
What is the purpose of signaling in the physical layer?
What is the purpose of signaling in the physical layer?
Which Ethernet standard uses 8B/10B encoding?
Which Ethernet standard uses 8B/10B encoding?
In which encoding method does the transition occur at the middle of each bit period?
In which encoding method does the transition occur at the middle of each bit period?
Which statement best describes codes in the context of encoding?
Which statement best describes codes in the context of encoding?
What does the signaling method determine in the physical layer?
What does the signaling method determine in the physical layer?
Which characteristic is NOT associated with the encoding process in the physical layer?
Which characteristic is NOT associated with the encoding process in the physical layer?
What is a method used by some copper cables to mitigate crosstalk?
What is a method used by some copper cables to mitigate crosstalk?
What is a characteristic of fiber-optic cables that makes them less susceptible to signal loss?
What is a characteristic of fiber-optic cables that makes them less susceptible to signal loss?
What is a typical application of single-mode fiber?
What is a typical application of single-mode fiber?
What is a disadvantage of multimode fiber compared to single-mode fiber?
What is a disadvantage of multimode fiber compared to single-mode fiber?
What is the maximum cable distance for multimode fiber?
What is the maximum cable distance for multimode fiber?
What is a common use case for fiber-optic cabling?
What is a common use case for fiber-optic cabling?
What is a benefit of fiber-optic cabling compared to copper cabling?
What is a benefit of fiber-optic cabling compared to copper cabling?
What is the purpose of the fiber-optic cable acting as a waveguide or light pipe?
What is the purpose of the fiber-optic cable acting as a waveguide or light pipe?
What is a key advantage of fiberoptic cables over copper cabling?
What is a key advantage of fiberoptic cables over copper cabling?
Which cable type is best suited for relatively long distances?
Which cable type is best suited for relatively long distances?
What factor makes wireless media susceptible to interference?
What factor makes wireless media susceptible to interference?
Which feature of WLANs can lead to reduced bandwidth for each user?
Which feature of WLANs can lead to reduced bandwidth for each user?
What is an important characteristic of fiberoptic cabling for data transmission?
What is an important characteristic of fiberoptic cabling for data transmission?
Which factor distinguishes fiberoptic cabling from UTP cabling regarding distance limitations?
Which factor distinguishes fiberoptic cabling from UTP cabling regarding distance limitations?
What makes fiberoptic cabling safer than UTP cabling in terms of electrical hazards?
What makes fiberoptic cabling safer than UTP cabling in terms of electrical hazards?
Why is wireless media considered highly mobile?
Why is wireless media considered highly mobile?
