Ethernet Network Fundamentals and Operations
Refer to the Exhibit: Full-Duplex Operation
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which of the following statements accurately reflects the operation of this link?
There will be no collisions in this type of link.
Random Delay in Ethernet Collisions
Why does a host on an Ethernet segment that experiences a collision use a random delay before attempting to transmit a frame?
A random delay helps prevent the stations from experiencing another collision during transmission.
Ethernet Frame Transmission: Host B’s Action
In the graphic, Host A has completed 50% of sending an Ethernet frame of 1 KB to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
Host B must wait until it is sure that Host A has completed sending its frame.
OSI Model Layers for Ethernet Operation
At which layers of the OSI Model does Ethernet operate? (Choose two.)
- Physical Layer
- Data Link Layer
IEEE 802.2 Ethernet Technologies Standard
What is the standard in the IEEE 802.2 Ethernet technologies?
Sublayer Logical Link Control
Binary to Hexadecimal Conversion
Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.
BA
Interframe Spacing Explained
Which of the following best describes the space between frames? (Choose two.)
- The minimum interval, measured in bit times, that any station must wait before sending another frame.
- The time provided for slow stations to process a frame and prepare for the next frame.
CSMA/CD Network Collision Response
When a collision occurs on a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
The hosts return to listening mode before transmitting.
Post-Collision Data Transmission Priority
After an Ethernet collision, when invoking the backoff algorithm, which device has priority to transmit data?
The device in the collision domain whose backoff timer expires first.
Disadvantage of CSMA/CD Access Method
Which of the following is a disadvantage of the CSMA/CD (Carrier Sense Multiple Access/Collision Detection) access method?
Collisions can impair network performance.
Full-Duplex Link Operation
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which of the following statements accurately reflects the operation of this link?
There will be no collisions in this type of link.
Random Delay After Ethernet Collision
Why does a host on an Ethernet segment that experiences a collision use a random delay before attempting to transmit a frame?
A random delay helps prevent the stations from experiencing another collision during transmission.
MAC Address Characteristics
Which of the following statements correctly describe MAC addresses? (Choose three.)
- Is copied into RAM during system startup.
- Provides a 3-byte OUI.
- Is 6 bytes long.
Host A to Server B Communication
Refer to the exhibit. Host A attempts to contact Server B. Which of the following statements correctly describe the routing generated by Host A in the process? (Choose two.)
- A frame with the destination MAC address of Router A.
- A packet with the destination IP of Server B.
Host A and New Host Communication
Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to contact a new host whose IP is 172.16.231.78. Host A performs the AND operation on the destination address. What two things happen? (Choose two.)
- Host A will issue an ARP request for the destination host’s MAC address.
- It will get a result of 172.16.224.0.
Advantages of Switches over Hubs
What are two characteristics that are preferred for switches over hubs in Ethernet-based networks? (Choose two.)
- Reduction of collisions to a minimum.
- Increase in communication performance.
TCP/IP Model Layer for Ethernet
At which layer of the TCP/IP model does Ethernet operate?
Network Access
Data Link Sublayer Functions
What are three functions of the data link sublayer in the OSI model? (Choose three.)
- Identifies the network layer protocol.
- Establishes the connection to the upper layers.
- Protects the network layer protocols from changes in the physical equipment.
Data Link Layer Encapsulation Functions
What are the three main functions provided by the data link layer encapsulation? (Choose three.)
- Addressing
- Error detection
- Frame delimiting
Common Media Types in Ethernet Networks
What are the two most common types of media currently used in Ethernet networks? (Choose two.)
- UTP Copper
- Fiber optics
Successful Frame Match
Refer to the exhibit. What choice represents a successful match between the frame’s type field and the content of the frame’s data field?
Data field – Network layer packet
Primary Purpose of ARP
What is the primary purpose of ARP?
To resolve IPv4 addresses to MAC addresses.