LAN Switching Concepts! Trivia Quiz
LAN switching means switching of data packets, which are transferred from one computer to another over a network. They are vital to network design, as they permit the traffic to be sent only where it is required and helps to improve the overall efficiency of LAN. This quiz will test your overall knowledge about LAN Switching Concepts. So, let's try out the quiz. All the best!
- 1.
10BASE2, 10BASE5, 10BASET.
- A.
10BASE2 and 10BASE5 uses a single cable to share network resources.
- B.
10BASET uses a shared hub to share network resources
- C.
10BASET uses co-ax cabling
- D.
10BASE2 and 10BASE5 uses UTP
- E.
In a 10BASE2 and 10BASE5, a problem happens on any single cable will affect the entire network
Correct Answer(s)
A. 10BASE2 and 10BASE5 uses a single cable to share network resources.
B. 10BASET uses a shared hub to share network resources
E. In a 10BASE2 and 10BASE5, a problem happens on any single cable will affect the entire networkExplanation
10BASET uses UTP
10BASE2 and 10BASE5 uses co-ax cablingRate this question:
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- 2.
Even though 10BASET is better than 10BASE5 and 10BASE2, it still has many problems such as
- A.
Broadcasts sent by 1 device is heard and process by only the intended devices on the network
- B.
Hub, used in 10BASET network allows all devices to send frame simultaneousnesly thus double the available bandwidth
- C.
Frame collision is inevitable in the network
- D.
UTP cable is unshielded and thus prone to more interference than co-ax cable in 10BASE5 and 10BASE2
Correct Answer
C. Frame collision is inevitable in the networkExplanation
Because hub is used in 10BASET network
- frame sent by 1 device is heard and processed by all devices. Only switch process frame, the hub doesn't.
- all devices share bandwidth so effective bandwidth is not double.
- the frame can only be sent 1 at a timeRate this question:
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- 3.
The difference between a hub and a bridge is that
- A.
Bridge creates more collision domain
- B.
Bridge creates only 1 collision domain
- C.
Hub creates more collision domain
- D.
Hub creates only 1 collision domain
- E.
Hub doubles the available bandwidth of the network
- F.
Bridge doubles the available bandwidth of the network
Correct Answer(s)
A. Bridge creates more collision domain
D. Hub creates only 1 collision domain
F. Bridge doubles the available bandwidth of the networkExplanation
A hub creates more collision domains because it broadcasts all incoming signals to all connected devices, causing collisions when two or more devices try to transmit at the same time. On the other hand, a bridge creates only 1 collision domain by filtering and forwarding network traffic based on MAC addresses, preventing collisions. Additionally, a bridge doubles the available bandwidth of the network by creating a separate collision domain for each connected device, while a hub does not have this capability.Rate this question:
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- 4.
The IEEE defines 3 general categories of Ethernet MAC addresses 1 - Unicast 2 - Broadcast 3 - Multicast A) A frame sent with a destination address of the broadcast address (FFFF.FFFF.FFFF) implies that all devices on the LAN should receive and process the frame B) Allow a dynamic subnet of devices on a LAN to communicate C) MAC addresses that identify a single LAN interface card
- A.
1A 2B 3C
- B.
1C 2A 3B
- C.
1C 2AB 3B
- D.
1C 2B 3A
Correct Answer
B. 1C 2A 3BExplanation
Unicast MAC addresses (1C) are used to identify a single LAN interface card. Broadcast MAC addresses (2A) are used to send a frame to all devices on the LAN. Multicast MAC addresses (3B) are used to allow a dynamic subnet of devices on a LAN to communicate. Therefore, the correct answer is 1C 2A 3B.Rate this question:
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- 5.
(3) Primary functions of a switch are
- A.
Routes the packet to appropriate device
- B.
Learns MAC addresses based on SOURCE address
- C.
Makes forwarding decision based on DESTINATION IP address
- D.
Makes forwarding decision based on DESTINATION MAC address
- E.
Uses STP (Spanning Tree Protocol) to prevents looping in a Layer 2 network environment
- F.
Creates collision domains and doubles available bandwidth
Correct Answer(s)
B. Learns MAC addresses based on SOURCE address
D. Makes forwarding decision based on DESTINATION MAC address
E. Uses STP (Spanning Tree Protocol) to prevents looping in a Layer 2 network environmentExplanation
Creates collision domains and doubles available bandwidth are benefits of using a switch, not a switch's functions.
Routes the packet to appropriate device - switch routes frames, not packets. Router routes packets. The switch operates at layer 2 (frame). The router operates at layer 3 (packet)
Makes forwarding decision based on DESTINATION IP address - Layer 2 deals with MAC only. Layer 3 deals with IP.Rate this question:
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- 6.
We call Fast Ethernet 1 is the interface the hub connected to the switch. The switch in the picture has MAC addresses of all PC0, 1, 2, and 3 and all the interfaces that these PCs connected to. Suppose PC0 (connected to the hub) sends a frame to PC1 (also connected to the same hub). What will the switch do
- A.
The switch forwards the frame from PC0 to PC1.
- B.
The hub forwards the frame from PC0 to PC1.
- C.
The switch discards the frame
- D.
The hub simply regenerates the signal and forwards the frame to all connected interface, in this case it's PC1
Correct Answer(s)
B. The hub forwards the frame from PC0 to PC1.
C. The switch discards the frame
D. The hub simply regenerates the signal and forwards the frame to all connected interface, in this case it's PC1Explanation
The switch discards the frame because the frame comes from the same interface that it is sending out, interface 1. The switch simply does not forward the frame to the same interface the frame comes in.Rate this question:
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- 7.
The switch learns MAC addresses and interfaces by
- A.
Examining the interface of the SOURCE MAC
- B.
Examining the DESTINATION MAC address in the frame
- C.
Examining the SOURCE MAC address in the frame
- D.
Examining the interface of the DESTINATION MAC
Correct Answer(s)
A. Examining the interface of the SOURCE MAC
C. Examining the SOURCE MAC address in the frameExplanation
The switch learns MAC addresses and interfaces by examining the interface of the SOURCE MAC and examining the SOURCE MAC address in the frame. This means that the switch looks at the interface from which the frame is received and the MAC address of the device that sent the frame. By doing so, the switch can build a table that associates MAC addresses with the corresponding interfaces, allowing it to efficiently forward frames to the correct destination.Rate this question:
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- 8.
We call Fast Ethernet 1 is the interface the hub connected to the switch. Suppose the switch has no MAC addresses for any of the PCs shown in the picture. Suppose PC0 (connected to the hub) sends a frame to PC2 (also connected to the same hub). What will the switch do
- A.
The switch forwards the frame from PC0 to PC2
- B.
The hub forwards the frame from PC0 to PC2
- C.
The switch discards the frame
- D.
The switch forwards the frame to PC1, PC2, and PC3
- E.
The switch forwards the frame to PC2, and PC3
Correct Answer
E. The switch forwards the frame to PC2, and PC3Explanation
The switch forwards the frame to PC2, and PC3 because
+ it doesn't forward the frame back to where the frame comes from, which is PC1
+ the switch doesn't have destination MAC addresses of any computer at all.Rate this question:
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- 9.
(Ignore the color of the connected cables) Suppose none of the switches has any MAC addresses of any PCs in the picture. PC0 is turned off. It cannot receive or send any thing. When PC1 sends a frame to PC0. What will happen?
- A.
Switch 4 floods the frame to all connected interfaces
- B.
Switch 0 floods the frame to all connected interfaces
- C.
Switch 3 floods the frame to all connected interfaces
- D.
Switch 0 forwards the frame to PC0 and records the MAC of PC0 and the its connected interface
Correct Answer(s)
A. Switch 4 floods the frame to all connected interfaces
B. Switch 0 floods the frame to all connected interfaces
C. Switch 3 floods the frame to all connected interfacesExplanation
The frame will be flooded indefinitely. Because PC0 is turned off, it cannot reply to any switches. And since the switches do not know the MAC and interface of PC0, they will continually flood the frame throughout the network.Rate this question:
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- 10.
Switch Internal Processing ------------------------------------
- 1 - Store and forward
- 2 - Fragment-free
- 3 - Cut-through
- A - The switch fully receives all bits in the frame before forwarding the frame. This allows the switch to check the FCS before forwarding the frame.
- B - The switch forwards the frame as soon as it can. This reduces latency but does not allow the switch to discard frames that fail the FCS check.
- C - The switch forwards the frame after receiving the first 64 bytes of the frame, thereby avoiding forwarding frames that were errored due to a collision
- A.
1A 2B 3C
- B.
1A 2C 3B
- C.
1C 2B 3C
- D.
1B 2A 3C
Correct Answer
B. 1A 2C 3B - 11.
Benefits of using a switch are (Pick 5)
- A.
Frame forwarding and filtering
- B.
More collision domains
- C.
Dedicated bandwidth to devices on each port
- D.
Uses store-and-forward, cut-through, and fragment-free internal processing methods to process frames
- E.
Multiple conversations between devices on different ports
- F.
Rate adaptation meaning devices using different speed can work with each other on the same network
- G.
Switch prevents loop in a switching network by using Spanning Tree Protocol
- H.
Double the available bandwidth of devices connected to it
Correct Answer(s)
B. More collision domains
C. Dedicated bandwidth to devices on each port
E. Multiple conversations between devices on different ports
F. Rate adaptation meaning devices using different speed can work with each other on the same network
H. Double the available bandwidth of devices connected to itExplanation
Frame forwarding and filtering and Switch prevents loop in a switching network by using Spanning Tree Protocol - this is how switch deals with frames
Uses store-and-forward, cut-through, and fragment-free internal processing methods to process frames - this is how switch deals with frame internallyRate this question:
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- 12.
Campus switches || 1 Access switches || || Distribution switches ||Core switches Connect Distribution switches to other building blocks and together Connect end devices Connect Access switches together
- A.
15 26 34
- B.
14 25 36
- C.
16 25 36
- D.
15 24 36
Correct Answer
A. 15 26 34Explanation
The given answer, 15 26 34, represents the connections between the different types of switches in a campus network. The first number, 15, indicates the connection between Access switches. The second number, 26, represents the connection between Distribution switches and other building blocks. Lastly, the third number, 34, signifies the connection between Core switches. This configuration allows for the Access switches to be connected together, the Distribution switches to connect to other building blocks, and the Core switches to be interconnected.Rate this question:
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Current Version
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Mar 19, 2023Quiz Edited by
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Apr 24, 2011Quiz Created by
Squirrelonfire