FREE CCNP Routing and Switching Questions and Answers
Layer 2 switching uses which of the following values to forward data?
Explanation:
Layer 2 switching uses MAC addresses to forward data. MAC addresses are unique identifiers assigned to network interface cards (NICs) at the factory. Layer 2 switches use these addresses to determine the destination of the data and forward it to the appropriate device on the local network. IP addresses, IPX addresses, RIP addresses, and UDP ports are all used in different layers of the network stack and are not directly used by layer 2 switching
Which of the following protocols can be used as a tool to discover a network topology?
Explanation:
CDP (Cisco Discovery Protocol) is a protocol used by Cisco devices to discover and gather information about neighboring devices on a network. It allows network administrators to obtain details about the devices connected to their Cisco network, such as their IP addresses, capabilities, and platform information. By using CDP, administrators can effectively map out the network topology, identifying the connections between devices and understanding how they are interconnected. Therefore, CDP is a suitable tool for discovering a network topology.
When a PC is connected to a Layer 2 switch port, how far does the collision domain spread?
Explanation:
When a PC is connected to a Layer 2 switch port, the collision domain is limited to that specific switch port. This means that collisions can only occur between devices connected to that particular port. The switch itself helps to eliminate collisions by creating separate collision domains for each port, allowing for simultaneous communication between devices connected to different ports without interference. Therefore, in this scenario, the collision domain does not extend beyond the switch port to any other ports or VLANs.
What does the 20/80 rule of networking state? (Pick one.)
Explanation:
The 20/80 rule of networking states that twenty percent of the traffic on a network segment stays local, whereas 80 percent of it travels across the network. This means that only a small portion of the network traffic remains within a specific segment, while the majority of it is transmitted across different segments or even outside of the network. This rule highlights the importance of efficient network design and management to ensure smooth and effective data transmission.
Which of the following does a multilayer switch perform?
Explanation:
A multilayer switch performs all of the mentioned tasks. It is capable of forwarding data packets based on MAC addresses, IP addresses, and UDP/TCP port numbers. This allows the switch to efficiently route traffic at both the data link layer and network layer, making it a versatile networking device.
Which of the following are the components of a typical switch block?
Please select 2 correct answers
Explanation:
Access-layer switches and distribution-layer switches are components of a typical switch block. Access-layer switches are responsible for connecting end devices, such as computers and printers, to the network. Distribution-layer switches are used to connect access-layer switches to the core-layer switches. Core-layer switches are not mentioned in the question, but they are another component of a typical switch block, as they are responsible for routing data between different networks. E-commerce servers and service provider switches are not components of a typical switch block.
What is a VLAN primarily used for?
Explanation:
A VLAN, or Virtual Local Area Network, is primarily used to segment a broadcast domain. By dividing a network into multiple VLANs, broadcast traffic is contained within each VLAN, reducing unnecessary network congestion and improving network performance. This segmentation allows for better control over network traffic and enhances security by isolating different groups of devices or users. Additionally, VLANs enable easier management and configuration of network resources, as they can be logically grouped together based on specific requirements or organizational structures.
Where does a broadcast domain exist in a switched network?
Explanation:
A broadcast domain exists on a single VLAN in a switched network. A VLAN (Virtual Local Area Network) is a logical grouping of devices that are connected to the same network and can communicate with each other as if they were on the same physical network. In a switched network, each VLAN is isolated from others, creating separate broadcast domains. This means that broadcast traffic, such as ARP requests or DHCP requests, is only forwarded within the same VLAN and does not cross over to other VLANs. Therefore, a broadcast domain exists within a single VLAN in a switched network.
Which of the following devices performs transparent bridging?
Explanation:
A Layer 2 switch performs transparent bridging. Transparent bridging is a technique used in computer networks to connect multiple network segments together. It operates at the data link layer (Layer 2) of the OSI model and uses MAC addresses to forward data packets between different network segments. A Layer 2 switch can learn and store MAC addresses in its forwarding table, allowing it to make forwarding decisions based on MAC addresses. This allows for efficient and fast switching of data packets between different network segments, making Layer 2 switches ideal for creating local area networks (LANs).
What are the two types of core, or backbone designs?
Please select 2 correct answers
Explanation:
A collapsed core design refers to a network architecture where the core and distribution layers are combined into a single layer, reducing complexity and cost. On the other hand, a dual-core design involves having two separate core layers for redundancy and increased reliability. These designs are commonly used in network infrastructure to ensure efficient and reliable data transmission."
Where does a collision domain exist in a switched network?
Explanation:
A collision domain exists on a single switch port in a switched network. In a switched network, each switch port operates as an individual collision domain. This means that when data is transmitted on a switch port, it does not collide with data transmitted on other switch ports. Switches use MAC address tables to forward data only to the intended destination port, effectively isolating each port and creating separate collision domains. This allows for efficient and simultaneous communication between devices connected to different switch ports.