30 Questions
Which one of the following is an advantage of using the cut-through switching method instead of the store-and-forward switching method?
Greater efficiency
Which one of the following is a multicast MAC address?
01:23:45:67:89:AB
What is wrong with the displayed termination in the exhibit?
Loose connection
Which types of UTP cables can be used to connect the devices in the exhibit?
Cat 5e and Cat 6
Which port does Switch0 use to send frames to the host with the IPv4 address 10.1.1.5?
FastEthernet0/1
What does the term 'attenuation' mean in data communication?
The loss of signal strength as it travels through a medium
What makes fiber preferable to copper cabling for interconnecting buildings?
Greater distance capability
What OSI physical layer term describes the process by which one wave modifies another wave?
Modulation
What OSI physical layer term describes the capacity at which a medium can carry data?
Bandwidth
What OSI physical layer term describes the measure of the transfer of bits across a medium over a given period of time?
Throughput
Which two devices commonly affect wireless networks?
Access points and bridges
Which two statements describe the services provided by the data link layer?
It formats data for transmission on the network
What is the function of the CRC value that is found in the FCS field of a frame?
It provides error detection for the frame
What is contained in the trailer of a data-link frame?
Error detection information
Which statement describes a characteristic of the frame header fields of the data link layer?
They are used to identify the source and destination MAC addresses
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
Partial mesh topology
Which two fields or features does Ethernet examine to determine if a received frame is passed to the data link layer or discarded by the NIC?
Source and destination MAC addresses
Which media communication type does not require media arbitration in the data link layer?
Broadcast
Which statement describes an extended star topology?
It has multiple switches connected to multiple switches
What is a characteristic of the LLC sublayer?
It handles flow control between nodes
What is the purpose of the OSI physical layer?
To convert data into signals for transmission across the network.
Why are two strands of fiber used for a single fiber optic connection?
To support full-duplex communication.
Which characteristic describes crosstalk?
The interference between adjacent cables or wires.
Which procedure is used to reduce the effect of crosstalk in copper cables?
Twisting the wires in the cable pairs.
Match the situation with the appropriate use of network media.
Situation A: Fiber-optic media, Situation B: Copper media, Situation C: Wireless media
A network administrator is measuring the transfer of bits across the company backbone for a mission-critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput?
A. Network congestion, B. Faulty network cables, C. Incompatible network protocols, D. Network latency
What are two characteristics of fiber-optic cable?
A. Immunity to electromagnetic interference, B. High bandwidth, C. Susceptibility to crosstalk, D. Long transmission distances
What is a primary role of the Physical layer in transmitting data on the network?
To convert data into signals for transmission across the network.
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
The presence of electromagnetic interference.
Refer to the graphic. What type of cabling is shown?
A. Twisted-pair cable, B. Coaxial cable, C. Fiber-optic cable, D. Serial cable
Study Notes
Advantages and Disadvantages of Switching Methods
- Cut-through switching method has an advantage over store-and-forward switching method in terms of reduced latency.
MAC Addresses
- A multicast MAC address is a specific type of MAC address.
Termination Issues
- The displayed termination in the exhibit is incorrect.
UTP Cables
- Certain types of UTP cables can be used to connect the devices in the exhibit.
Switch Port Usage
- Switch0 uses a specific port to send frames to the host with the IPv4 address 10.1.1.5.
Data Communication Terminology
- Attenuation refers to the loss of signal strength during data transmission.
Fiber Optic Cabling
- Fiber optic cabling is preferable to copper cabling for interconnecting buildings due to its advantages.
OSI Physical Layer
- Intermodulation is the process by which one wave modifies another wave.
- Bandwidth refers to the capacity at which a medium can carry data.
- Throughput refers to the measure of the transfer of bits across a medium over a given period of time.
Wireless Networks
- Two devices that commonly affect wireless networks are [devices].
Data Link Layer
- The data link layer provides error-free transfer of data frames and flow control.
- The function of the CRC value in the FCS field of a frame is to detect errors.
Frame Structure
- The trailer of a data-link frame contains the FCS.
Frame Header Fields
- The frame header fields of the data link layer contain source and destination MAC addresses.
WAN Topologies
- A partial mesh topology provides high availability and connects some, but not all, remote sites.
Ethernet Frame Processing
- Ethernet examines the destination MAC address and the FCS to determine if a received frame is passed to the data link layer or discarded by the NIC.
Media Communication
- A point-to-point connection does not require media arbitration in the data link layer.
Extended Star Topology
- An extended star topology is a type of network topology.
LLC Sublayer
- The LLC sublayer is responsible for providing multiplexing and flow control.
OSI Physical Layer
- The primary role of the OSI physical layer is to transmit raw bits over a physical medium.
Fiber Optic Connections
- Two strands of fiber are used for a single fiber optic connection to provide full-duplex communication.
Crosstalk
- Crosstalk is a phenomenon that occurs when the signal from one cable pair is induced onto another cable pair.
Reducing Crosstalk
- Twisting the cables is a procedure used to reduce the effect of crosstalk in copper cables.
Network Media Usage
- The choice of network media depends on the specific situation and requirements.
Network Throughput
- Three factors that could influence differences in throughput are [factors].
Fiber-Optic Cables
- Fiber-optic cables have two characteristics: [characteristics].
Physical Layer Role
- The Physical layer is responsible for transmitting raw bits over a physical medium.
Crosstalk in Copper Cables
- Crosstalk within copper cable pairs is caused by the electrical signals from one cable pair inducing a voltage onto another cable pair.
Cabling
- The graphic shows an example of [type of cabling].
Test your knowledge on Ethernet concepts in this quiz covering modules 4-7 of the Introduction to Networks (Version 7.00) course. Explore topics such as the purpose of the OSI physical layer and the significance of two strands of fiber.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
