Cisco certifications, like the CCNA, open doors to IT careers, and a clear understanding of Cisco switch functions is essential for passing these exams. This guide provides the test-ready answer to “What are two actions performed by a Cisco switch?” We’ll cover the correct answers, explain why they’re correct, and include additional insights to support your study efforts.
What Are Two Actions Performed by a Cisco Switch? (Choose Two)
A Cisco switch performs two essential actions: using source MAC addresses to build and maintain a MAC address table and forwarding frames based on the destination MAC address.
Explanation of Correct Actions
- Using Source MAC Addresses to Build and Maintain a MAC Address Table: Switches learn and store MAC addresses from incoming frames to keep an updated record of devices connected to the network.
- Forwarding Frames Based on the Destination MAC Address: The switch uses its MAC address table to direct frames to the correct destination, optimizing data flow and network performance.
These actions are fundamental to how Cisco switches operate within a network, allowing efficient traffic management and security.
Cisco Switch Functions
Question: What are two actions performed by a Cisco switch? (Choose two.)
Answer Options:
A. Forwarding frames with unknown destination IP addresses to the default gateway
B. Building a routing table based on the first IP address in the frame header
C. Using source MAC addresses to build and maintain a MAC address table
D. Examining the destination MAC address to add entries to the MAC address table
E. Forwarding frames via the destination MAC address
Correct Answers: C and E.
Explanation of Answers
- Using Source MAC Addresses to Build and Maintain a MAC Address Table: Cisco switches track connected devices by reading the source MAC addresses in incoming frames, which helps organize network traffic.
- Forwarding Frames via the Destination MAC Address: Switches refer to the MAC address table to send frames directly to the intended device, which enhances network efficiency and security.
Why the Other Answers Are Incorrect
- Forwarding Frames to the Default Gateway Based on IP Addresses: Cisco switches operate at Layer 2 and forward traffic based on MAC addresses, not IP addresses. IP-based forwarding is the role of routers.
- Building a Routing Table Based on IP Addresses: Routing tables are IP-based and managed by routers, not switches.
- Adding Entries to the MAC Address Table Using Destination MAC Addresses: Switches use source MAC addresses to populate the MAC address table, not the destination.
Understanding Cisco Switch Operations
Cisco switches are key for managing traffic within local networks, especially at Layer 2 (data link layer). Here’s a breakdown of their core functions:
Core Functions of a Cisco Switch
- Packet Switching Using MAC Addresses: Cisco switches forward data to the correct device by referencing MAC addresses, reducing unnecessary network traffic.
- Traffic Management and Filtering: Switches apply security policies to control which devices can access the network, preventing congestion and potential security risks.
Understanding these functions is crucial for Cisco certification, as they highlight the switch’s role in efficient and secure data transfer.
Access Switch vs. Core Switch
- Access Switch: Connects end devices like computers and printers, providing secure, high-speed access within a local network.
- Core Switch: Manages data between multiple network segments, often acting as the backbone for larger networks.
These distinctions can appear on exams, so it’s beneficial to understand how each type of switch operates within network architecture.
Cisco Access Switch: Core Functions Explained
What Is a Cisco Access Switch?
Cisco access switches serve as a link between end devices and the network infrastructure, connecting devices to ensure reliable communication.
Key Functions of a Cisco Access Switch
- Data Forwarding: Directs traffic to the correct destination, keeping data flow efficient.
- Traffic Filtering and VLAN Management: Uses VLANs (Virtual Local Area Networks) to segment traffic, improving security and reducing congestion.
Mastering these functions is valuable for Cisco exams, as it represents foundational knowledge in network management.
Preparing for Cisco Certification Exams
Cisco exams can be challenging, but these study tips can enhance your success.
About Cisco Certification Exams
- Importance of Cisco Switches: Cisco exams like the CCNA emphasize switches and their functions in managing network traffic.
- Exam Structure: Test questions frequently focus on device roles, so understanding how Cisco switches contribute to network operation is essential.
Tips for Success
- Practice Questions: Familiarize yourself with similar questions to strengthen your grasp of key concepts.
- Use Reliable Resources: Cisco’s official study materials, practice exams, and online tutorials are trustworthy resources.
- Hands-On Practice: Use network simulators to apply your knowledge of Cisco switch configurations in a practical setting.
These strategies can help you solidify your understanding of Cisco switch functions and boost your exam performance.
Additional FAQs for Exam Success
“What makes Cisco switches reliable for business networks?”
Cisco switches are secure, scalable, and reliable, making them ideal for high-traffic business environments.
“Why is understanding switch functions important for Cisco certification?”
Switch functions are foundational for configuring and troubleshooting networks, an essential skill for certification.
“What’s the difference between a Cisco switch and a router?”
While switches connect devices within a network using MAC addresses, routers connect networks and direct data based on IP addresses.
Primary Functions of Cisco Switches
Cisco switches perform two essential actions — building and maintaining a MAC address table using source MAC addresses and forwarding frames based on the destination MAC address. These functions ensure secure, efficient data transfer across the network. Mastering these basics is essential for exam success and a strong foundation in IT networking.
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