Virtual LANs: Essential Study for Competitive Exams

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Virtual LANs MCQ & Objective Questions

Understanding Virtual LANs is crucial for students preparing for school exams and competitive tests. These concepts not only form a significant part of the syllabus but also appear frequently in objective questions and MCQs. By practicing Virtual LANs MCQ questions, students can enhance their grasp of the subject, leading to better scores in exams.

What You Will Practise Here

Definition and purpose of Virtual LANs
Key benefits of using Virtual LANs in networking
How Virtual LANs improve network efficiency
Common configurations and setups of Virtual LANs
Understanding VLAN tagging and protocols
Real-world applications of Virtual LANs in organizations
Diagrams illustrating Virtual LAN structures and configurations

Exam Relevance

Virtual LANs are a vital topic in various educational boards, including CBSE and State Boards. They are often featured in competitive exams like NEET and JEE, where students may encounter questions related to networking concepts and configurations. Common question patterns include multiple-choice questions that test both theoretical knowledge and practical applications of Virtual LANs.

Common Mistakes Students Make

Confusing Virtual LANs with traditional LANs
Misunderstanding VLAN tagging and its significance
Overlooking the benefits of Virtual LANs in network segmentation
Failing to apply theoretical concepts to practical scenarios

FAQs

Question: What is a Virtual LAN?
Answer: A Virtual LAN (VLAN) is a logical grouping of devices on a network, allowing them to communicate as if they were on the same physical network, regardless of their actual location.

Question: How do Virtual LANs improve network performance?
Answer: Virtual LANs reduce broadcast traffic, enhance security, and improve network management by segmenting the network into smaller, manageable parts.

Now is the time to boost your understanding of Virtual LANs! Dive into our practice MCQs and test your knowledge to excel in your exams.

Q. How does a switch handle VLAN tagging?

A. By using MAC addresses
B. By using IP addresses
C. By using 802.1Q tags
D. By using ARP requests

Solution

Switches use 802.1Q tags to identify VLANs, allowing them to properly forward frames to the correct VLAN.

Correct Answer: C — By using 802.1Q tags

Q. What is a Virtual LAN (VLAN)?

A. A physical network segment
B. A logical grouping of devices
C. A type of network protocol
D. A method of data encryption

Solution

A VLAN is a logical grouping of devices that allows them to communicate as if they are on the same physical network, regardless of their actual physical location.

Correct Answer: B — A logical grouping of devices

Q. What is the default VLAN ID for untagged traffic on most switches?

A. 1
B. 10
C. 100
D. 0

Solution

The default VLAN ID for untagged traffic on most switches is VLAN 1.

Correct Answer: A — 1

Q. What is the default VLAN on most switches?

A. VLAN 1
B. VLAN 10
C. VLAN 100
D. VLAN 0

Solution

Most switches have VLAN 1 as the default VLAN, which is used for management and control traffic.

Correct Answer: A — VLAN 1

Q. What is the function of a VLAN Access Control List (VACL)?

A. To filter traffic between VLANs
B. To manage VLAN configurations
C. To monitor VLAN performance
D. To assign VLANs to ports

Solution

A VLAN Access Control List (VACL) is used to filter traffic between VLANs, providing a way to enforce security policies.

Correct Answer: A — To filter traffic between VLANs

Q. What is the maximum number of VLANs that can be created on a switch using the 802.1Q standard?

A. 256
B. 512
C. 1024
D. 4096

Solution

The 802.1Q standard allows for a maximum of 4096 VLANs to be created on a switch.

Correct Answer: D — 4096

Q. What is the maximum number of VLANs that can be created using the 802.1Q standard?

A. 256
B. 4096
C. 1024
D. 2048

Solution

The 802.1Q standard allows for the creation of up to 4096 VLANs, as it uses a 12-bit VLAN ID.

Correct Answer: B — 4096

Q. What is the primary benefit of using VLANs?

A. Increased physical security
B. Reduced broadcast traffic
C. Higher data transfer rates
D. Simplified network topology

Solution

VLANs reduce broadcast traffic by segmenting a network into smaller, isolated groups, which improves overall network performance.

Correct Answer: B — Reduced broadcast traffic

Q. What is the purpose of inter-VLAN routing?

A. To connect different physical networks
B. To allow communication between VLANs
C. To increase network security
D. To reduce network latency

Solution

Inter-VLAN routing allows devices on different VLANs to communicate with each other, typically using a router or a Layer 3 switch.

Correct Answer: B — To allow communication between VLANs

Q. What is the purpose of tagging frames in a VLAN?

A. To encrypt the data
B. To identify the VLAN membership
C. To increase the frame size
D. To improve transmission speed

Solution

Tagging frames in a VLAN is used to identify the VLAN membership of the frame, allowing switches to properly route the traffic.

Correct Answer: B — To identify the VLAN membership

Q. Which device is primarily responsible for routing traffic between VLANs?

A. Switch
B. Router
C. Hub
D. Bridge

Solution

A router is primarily responsible for routing traffic between VLANs, enabling communication between different network segments.

Correct Answer: B — Router

Q. Which device is typically used to perform Inter-VLAN routing?

A. Switch
B. Router
C. Hub
D. Bridge

Solution

A router is typically used to perform Inter-VLAN routing, enabling communication between different VLANs.

Correct Answer: B — Router

Q. Which IEEE standard defines the VLAN tagging protocol?

A. 802.1Q
B. 802.3
C. 802.11
D. 802.15

Solution

IEEE 802.1Q defines the VLAN tagging protocol, which allows for the identification of VLANs in Ethernet frames.

Correct Answer: A — 802.1Q

Q. Which of the following is a characteristic of a trunk port?

A. Carries traffic for a single VLAN
B. Is used to connect end devices
C. Carries traffic for multiple VLANs
D. Is always configured as access mode

Solution

A trunk port carries traffic for multiple VLANs, allowing switches to communicate VLAN information across the network.

Correct Answer: C — Carries traffic for multiple VLANs

Q. Which of the following is a characteristic of VLANs?

A. They require a dedicated physical switch
B. They can span multiple switches
C. They operate only at Layer 1 of the OSI model
D. They are limited to 10 devices

Solution

VLANs can span multiple switches, allowing devices on different physical switches to communicate as if they are on the same local network.

Correct Answer: B — They can span multiple switches

Q. Which of the following is NOT a type of VLAN?

A. Data VLAN
B. Voice VLAN
C. Management VLAN
D. Control VLAN

Solution

Control VLAN is not a recognized type of VLAN; the common types include Data VLAN, Voice VLAN, and Management VLAN.

Correct Answer: D — Control VLAN

Q. Which protocol is commonly used to manage VLANs?

A. Spanning Tree Protocol (STP)
B. VLAN Trunking Protocol (VTP)
C. Internet Control Message Protocol (ICMP)
D. Hypertext Transfer Protocol (HTTP)

Solution

VLAN Trunking Protocol (VTP) is used to manage VLAN configurations across multiple switches in a network.

Correct Answer: B — VLAN Trunking Protocol (VTP)

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