What are the two main functions of a Layer 2 switch? (Choose two.)

Overview of the Cisco 200-301 Exam

The Cisco 200-301 exam is a 120-question, multiple-choice exam that assesses a candidate's knowledge and skills in Cisco networking technologies. The exam covers a wide range of topics, including network fundamentals, routing and switching, wireless networking, and security. To prepare for the exam, candidates should have a strong understanding of these topics and be able to apply them to real-world scenarios.

DumpsBoss offers a comprehensive range of study materials to help candidates prepare for the Cisco 200-301 exam. These materials include practice questions, study guides, and video tutorials. By using these materials, candidates can increase their chances of success on the exam and achieve their Cisco certification goals.

Definition of a Layer 2 switch

A Layer 2 switch is a networking device that operates at the data link layer (Layer 2) of the OSI model. It is responsible for forwarding data frames between devices on a local area network (LAN).

Layer 2 switches use MAC addresses to identify devices on the network and to determine which port to forward traffic to.

Layer 2 switches are typically used to connect devices such as computers, printers, and servers within a small to medium-sized network. They can also be used to segment larger networks into smaller, more manageable segments.

DumpsBoss offers a range of study materials to help candidates prepare for exams on Layer 2 switching and other networking technologies. These materials include practice questions, study guides, and video tutorials.

Two Main Functions of a Layer 2 Switch

The two main functions of a Layer 2 switch are:

1. MAC address learning and forwarding: Layer 2 switches learn the MAC addresses of devices on the network by examining the source MAC address of incoming frames.

They then use this information to build a MAC address table, which maps MAC addresses to ports. When a frame is received on a port, the switch looks up the destination MAC address in the table and forwards the frame to the appropriate port.

2. VLAN support: VLANs (virtual LANs) allow a physical network to be divided into multiple logical networks. This can be useful for security purposes or to improve network performance. Layer 2 switches support VLANs by tagging frames with a VLAN ID. This allows the switch to forward frames only to devices that are members of the same VLAN.

Additional Features of Layer 2 Switches

In addition to their two main functions of MAC address learning and forwarding and VLAN support, Layer 2 switches may also offer a range of additional features, including:

Port security: Port security allows administrators to restrict the number of MAC addresses that are allowed to access a particular port. This can be useful for preventing unauthorized devices from connecting to the network.
Spanning Tree Protocol (STP): STP is a protocol that prevents loops in a network. Loops can
occur when there is more than one active path between two devices. STP works by blocking one of the paths, creating a loop-free topology.
Quality of Service (QoS): QoS allows administrators to prioritize traffic on the network. This can be useful for ensuring that critical traffic, such as voice and video, is delivered with minimal delay and jitter.
Power over Ethernet (PoE): PoE allows switches to provide power to devices such as IP phones and wireless access points over the Ethernet cable. This can simplify installation and reduce the need for additional power outlets.

Importance of Layer 2 Switching in Network Design

Layer 2 switching is an essential technology for network design because it provides a number of benefits, including:

Improved performance: Layer 2 switches can improve network performance by reducing the amount of traffic that is broadcast across the network. This is because Layer 2 switches only forward traffic to the ports that need it, rather than broadcasting it to all ports on the switch.
Increased security: Layer 2 switches can help to improve network security by isolating traffic between different VLANs. This can prevent unauthorized users from accessing sensitive data or launching attacks on other devices on the network.
Simplified management: Layer 2 switches can simplify network management by providing a centralized point of control for the network. This can make it easier to troubleshoot problems and make changes to the network.

Conclusion

In conclusion, Layer 2 switches are an essential technology for network design. They provide a number of benefits, including improved performance, increased security, and simplified management. As a result, Layer 2 switches are widely used in a variety of networks, from small businesses to large enterprises.

To learn more about Layer 2 switching and other networking technologies, consider using DumpsBoss's range of study materials. DumpsBoss offers practice questions, study guides, and video tutorials to help candidates prepare for exams and achieve their certification goals.

Special Discount: Offer Valid For Limited Time “200-301 Exam” Order Now!

Sample Questions for Cisco 200-301 Dumps

Actual exam question from Cisco 200-301 Exam.

What are the two main functions of a Layer 2 switch? (Choose two.)

A. Routing packets between different networks

B. Forwarding frames based on MAC addresses

C. Assigning IP addresses to connected devices

D. Learning MAC addresses and building a MAC address table