Practice Network Topology MCQ questions with answers and explanations.
These questions are useful for IBPS IT Officer, GATE, and other competitive exams.
Difficulty: Easy to Medium
Total Questions: 10
Network Topology MCQ Questions (Set 1)
Q1: In which topology is every node connected to a central device like a Hub or Switch?
A. Mesh
B. Bus
C. Star
D. Ring
View Answer.
Answer: C
Explanation: In a Star topology, all devices connect to a central controller, which acts as an interface between the nodes
Q2: A network where each node is connected to exactly two other nodes, forming a continuous path for signals, is a:
A. Ring Topology
B. Star Topology
C. Tree Topology
D. Bus Topology
View Answer
Answer: A
Explanation: In a Ring topology, each device has a dedicated point-to-point connection with only the two devices on either side of it.
Q3: Which topology requires a “Terminator” at both ends of the main cable to prevent signal reflection?
A. Mesh
B. Bus
C. Star
D. Ring
View Answer
Answer: B
Explanation: A Bus topology uses a single backbone cable; terminators are placed at the ends to absorb signals so they don’t bounce back.
Q4: In a Mesh topology with 6 nodes, how many total links are required for full connectivity?
A. 6
B. 12
C. 15
D. 30
View Answer
Answer: C
Explanation: Using the formula \frac{N \times (N-1)}{2}, for N=6: \frac{6 \times 5}{2} = 15 links.
Q5: Which of the following is a major disadvantage of the Bus topology?
A. High cost of cabling
B. Central point of failure at the hub
C. Difficulty in adding new nodes
D. The entire network shuts down if the main cable breaks
View Answer
Answer: D
Explanation: Since all nodes share one backbone, a break anywhere in the main cable stops all transmission.
Q6: In a Star topology, if the central Hub fails, what happens to the network?
A. Only the sender is affected
B. The entire network goes down
C. Data is automatically rerouted
D. Only the nodes connected to port 1 fail
View Answer
Answer: B
Explanation: The central hub is a single point of failure in a Star topology; if it stops working, all nodes lose connectivity.
Q7: Which topology is known for using “Token Passing” to prevent data collisions?
A. Bus
B. Star
C. Ring
D. Mesh
View Answer
Answer: C
Explanation: In Ring networks, a small frame called a “token” circulates; only the node holding the token is allowed to transmit.
Q8: “Multipoint” connection is most commonly associated with which topology?
A. Mesh
B. Bus
C. Star
D. Ring
View Answer
Answer: B
Explanation: A Bus topology is a multipoint configuration where one long cable acts as a shared medium for all attached devices.
Q9: Which topology offers the highest reliability because it provides multiple paths for data to travel?
A. Bus
B. Star
C. Mesh
D. Ring
View Answer
Answer: C
Explanation: Mesh topology is highly fault-tolerant; if one link fails, data can be rerouted through several other available paths.
Q10: Hybrid topology is best described as:
A. A network with no central hub
B. A combination of two or more different topologies
C. A network that uses only wireless connections
D. A single ring connected to a single bus
View Answer
Answer: B
Explanation: A Hybrid topology is formed by connecting different types of topologies (e.g., a Star network connected to a Bus network).