Q. In STP, what is the purpose of the port states?
A.
To define the speed of the port
B.
To determine the role of the port in the topology
C.
To manage IP address assignments
D.
To encrypt data on the port
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Solution
Port states in STP (Blocking, Listening, Learning, Forwarding) determine the role of the port in the network topology.
Correct Answer:
B
— To determine the role of the port in the topology
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Q. In STP, what is the significance of the Bridge ID?
A.
It uniquely identifies a switch in the network
B.
It determines the speed of the connection
C.
It manages VLAN assignments
D.
It encrypts the data packets
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Solution
The Bridge ID uniquely identifies a switch in the network and is used in the STP calculations.
Correct Answer:
A
— It uniquely identifies a switch in the network
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Q. In STP, which device is elected as the root bridge?
A.
The device with the highest MAC address
B.
The device with the lowest MAC address
C.
The device with the highest bandwidth
D.
The device with the lowest bridge ID
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Solution
The root bridge is elected based on the lowest bridge ID, which is a combination of bridge priority and MAC address.
Correct Answer:
D
— The device with the lowest bridge ID
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Q. What algorithm does the Spanning Tree Protocol use to determine the best path?
A.
Dijkstra's Algorithm
B.
Bellman-Ford Algorithm
C.
Spanning Tree Algorithm
D.
Flooding Algorithm
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Solution
STP uses the Spanning Tree Algorithm to determine the best path and eliminate loops.
Correct Answer:
C
— Spanning Tree Algorithm
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Q. What happens to ports in a switch that are in a blocking state in STP?
A.
They forward traffic
B.
They drop traffic
C.
They listen for BPDUs
D.
They become active
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Solution
Ports in a blocking state do not forward traffic; they drop it to prevent loops.
Correct Answer:
B
— They drop traffic
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Q. What happens to redundant links in a network using Spanning Tree Protocol?
A.
They are utilized for load balancing
B.
They are blocked to prevent loops
C.
They are automatically configured
D.
They are converted to trunk links
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Solution
Redundant links are blocked in STP to prevent loops while still allowing for failover if the active link fails.
Correct Answer:
B
— They are blocked to prevent loops
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Q. What happens when a link in a network using STP fails?
A.
The network crashes
B.
STP recalculates the topology
C.
All devices are reset
D.
Traffic is rerouted immediately without delay
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Solution
When a link fails, STP recalculates the topology to find an alternate path and maintain a loop-free network.
Correct Answer:
B
— STP recalculates the topology
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Q. What is the default bridge priority value in Spanning Tree Protocol?
A.
0
B.
32768
C.
65535
D.
4096
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Solution
The default bridge priority value in STP is 32768, which is used in the election of the Root Bridge.
Correct Answer:
B
— 32768
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Q. What is the default bridge priority value in STP?
A.
0
B.
32768
C.
65535
D.
4096
Show solution
Solution
The default bridge priority value in STP is 32768, which is used to determine the root bridge.
Correct Answer:
B
— 32768
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Q. What is the effect of enabling PortFast on a switch port in STP?
A.
The port will never participate in STP
B.
The port transitions to the forwarding state immediately
C.
The port will block all traffic
D.
The port will only allow management traffic
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Solution
Enabling PortFast allows a switch port to transition to the forwarding state immediately, bypassing the listening and learning states.
Correct Answer:
B
— The port transitions to the forwarding state immediately
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Q. What is the primary purpose of the Spanning Tree Protocol (STP)?
A.
To prevent loops in a network
B.
To increase bandwidth
C.
To provide encryption
D.
To manage IP addresses
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Solution
STP is designed to prevent loops in a network by creating a loop-free logical topology.
Correct Answer:
A
— To prevent loops in a network
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Q. What is the purpose of Bridge Protocol Data Units (BPDUs) in STP?
A.
To carry user data
B.
To share information about the network topology
C.
To manage IP addresses
D.
To encrypt data
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Solution
BPDUs are used to share information about the network topology and help in the election of the Root Bridge.
Correct Answer:
B
— To share information about the network topology
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Q. What is the role of the Bridge Protocol Data Unit (BPDU) in STP?
A.
To carry user data
B.
To manage routing tables
C.
To share information about the network topology
D.
To encrypt data
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Solution
BPDUs are used by STP to share information about the network topology and help in loop prevention.
Correct Answer:
C
— To share information about the network topology
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Q. What is the role of the Root Bridge in Spanning Tree Protocol?
A.
To forward all traffic
B.
To act as a reference point for path selection
C.
To block all ports
D.
To manage IP address assignments
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Solution
The Root Bridge serves as a reference point for all path calculations in the STP topology.
Correct Answer:
B
— To act as a reference point for path selection
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Q. What state does a port enter when it is actively forwarding traffic in STP?
A.
Listening
B.
Learning
C.
Forwarding
D.
Blocking
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Solution
A port in the Forwarding state actively forwards traffic to and from the network.
Correct Answer:
C
— Forwarding
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Q. Which layer of the OSI model does the Spanning Tree Protocol operate at?
A.
Data Link Layer
B.
Network Layer
C.
Transport Layer
D.
Application Layer
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Solution
STP operates at the Data Link Layer (Layer 2) of the OSI model.
Correct Answer:
A
— Data Link Layer
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Q. Which of the following is a common variant of the Spanning Tree Protocol?
A.
Rapid Spanning Tree Protocol (RSTP)
B.
Enhanced Spanning Tree Protocol (ESTP)
C.
Dynamic Spanning Tree Protocol (DSTP)
D.
Static Spanning Tree Protocol (SSTP)
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Solution
Rapid Spanning Tree Protocol (RSTP) is a common variant that provides faster convergence than STP.
Correct Answer:
A
— Rapid Spanning Tree Protocol (RSTP)
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Q. Which protocol is commonly used to manage the Spanning Tree Protocol?
A.
Rapid Spanning Tree Protocol (RSTP)
B.
Link Aggregation Control Protocol (LACP)
C.
Virtual LAN (VLAN)
D.
Internet Control Message Protocol (ICMP)
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Solution
Rapid Spanning Tree Protocol (RSTP) is an evolution of STP that provides faster convergence.
Correct Answer:
A
— Rapid Spanning Tree Protocol (RSTP)
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Q. Which protocol is used to elect the Root Bridge in STP?
A.
Bridge Protocol Data Unit (BPDU)
B.
Routing Information Protocol (RIP)
C.
Open Shortest Path First (OSPF)
D.
Internet Control Message Protocol (ICMP)
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Solution
BPDU is used in STP to communicate information about bridge IDs and to elect the Root Bridge.
Correct Answer:
A
— Bridge Protocol Data Unit (BPDU)
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Q. Which version of Spanning Tree Protocol is an improvement over the original IEEE 802.1D?
A.
Rapid Spanning Tree Protocol (RSTP)
B.
Multiple Spanning Tree Protocol (MSTP)
C.
Per VLAN Spanning Tree (PVST)
D.
Enhanced Spanning Tree Protocol (ESTP)
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Solution
Rapid Spanning Tree Protocol (RSTP) is an improvement over the original IEEE 802.1D, providing faster convergence.
Correct Answer:
A
— Rapid Spanning Tree Protocol (RSTP)
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Showing 1 to 20 of 20 (1 Pages)
Spanning Tree Protocol MCQ & Objective Questions
The Spanning Tree Protocol (STP) is a fundamental concept in networking that every student should master for their exams. Understanding STP not only helps in grasping network design principles but also enhances your performance in objective questions. Practicing MCQs and other practice questions on this topic is crucial for scoring better in exams, as it reinforces your knowledge and prepares you for important questions that may appear in various assessments.
What You Will Practise Here
Definition and purpose of Spanning Tree Protocol
Key concepts: root bridge, designated port, and blocking state
STP operation and its role in preventing loops in networks
Different types of STP: IEEE 802.1D and Rapid Spanning Tree Protocol (RSTP)
Diagrams illustrating STP topology and port states
Common algorithms used in STP for path selection
Real-world applications and scenarios of Spanning Tree Protocol
Exam Relevance
The Spanning Tree Protocol is a significant topic in various examinations, including CBSE, State Boards, NEET, and JEE. Students can expect questions that test their understanding of STP concepts, its applications, and its importance in network design. Common question patterns include multiple-choice questions that require students to identify the correct definitions, operational processes, and the implications of STP in real-world networking scenarios.
Common Mistakes Students Make
Confusing the roles of different ports in STP, such as root port and designated port.
Misunderstanding the process of how STP prevents loops in a network.
Overlooking the differences between standard STP and Rapid Spanning Tree Protocol (RSTP).
Failing to interpret STP diagrams correctly, leading to incorrect answers in MCQs.
FAQs
Question: What is the main purpose of the Spanning Tree Protocol?Answer: The main purpose of STP is to prevent loops in network topologies by creating a loop-free logical topology.
Question: How does STP determine the root bridge?Answer: STP determines the root bridge based on the lowest bridge ID, which is a combination of the bridge priority and the MAC address.
Now that you have a clear understanding of the Spanning Tree Protocol, it's time to put your knowledge to the test. Solve practice MCQs and enhance your understanding of this essential topic. Remember, consistent practice is key to mastering the concepts and excelling in your exams!
