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Question 1
If a switch has three computers connected to it, with no VLANs present, how many broadcast and collision domains is the switch creating?
A. Three broadcast and one collision
B. Three broadcast and three collision
C. One broadcast and three collision
D. One broadcast and one collision
Correct answer: C
Question 2
Acknowledgments, sequencing, and flow control are characteristics of whichOSI layer?
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 7
Correct answer: C
Question 3
Which of the following are types of flow control? (Choose all that apply.)
A. Buffering
B. Cut-through
C. Windowing
D. Congestion avoidance
E. VLANs
Correct answer: ACD
Question 4
If a hub has three computers connected to it, how many broadcast and collision domains is the hub creating?
A. Three broadcast and one collision
B. Three broadcast and three collision
C. One broadcast and three collision
D. One broadcast and one collision
Correct answer: D
Question 5
What is the purpose of flow control?
A. To ensure that data is retransmitted if an acknowledgment is not received
B. To reassemble segments in the correct order at the destination device
C. To provide a means for the receiver to govern the amount of data sent by the sender
D. To regulate the size of each segment
Correct answer: C
Question 6
Which three statements are true about the operation of a full-duplex Ethernet network?
A. There are no collisions in full-duplex mode.
B. A dedicated switch port is required for each full-duplex node.
C. Ethernet hub ports are preconfigured for full-duplex mode.
D. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.
E. The host network card and the switch port must be capable of operating in full-duplex mode.
Correct answer: ABE
Question 7
Which of the following is not a benefit of reference models such as the OSImodel?
A. It allows changes on one layer to affect operations on all other layers as well.
B. It divides the network communication process into smaller and simpler components, thus aiding component development, design, andtroubleshooting.
C. It allows multiple-vendor development through standardization of network components.
D. It allows various types of network hardware and software to communicate.
Correct answer: A
Question 8
Which of the following devices do not operate at all levels of the OSImodel?
A. Network management stations (NMSs)
B. Routers
C. Web and application servers
D. Network hosts
Correct answer: B
Question 9
When an HTTP document must be retrieved from a location other than the local machine, what layer of the OSImodel must be accessed first?
A. Presentations
B. Transport
C. Application
D. Network
Correct answer: C
Question 10
Which layer of the OSImodel offers three different modes of communication: simplex, half duplex, and full duplex?
A. Presentation
B. Transport
C. Application
D. Session
Correct answer: D
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