Podcast
Questions and Answers
Which two statements about the purpose of the OSI model are accurate? (Choose two)
Which two statements about the purpose of the OSI model are accurate? (Choose two)
- Facilitates an understanding of how information travels throughout a network (correct)
- Defines the network functions that occur at each layer (correct)
- Is a protocol used for data transfer
- Is only useful in troubleshooting networking issues
What is the default behavior of a Layer 2 switch when a frame with an unknown destination MAC address is received?
What is the default behavior of a Layer 2 switch when a frame with an unknown destination MAC address is received?
The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN.
What is the destination MAC address of a broadcast frame?
What is the destination MAC address of a broadcast frame?
ff:ff:ff:ff:ff:ff
Which action is taken by a switch port enabled for PoE power classification override?
Which action is taken by a switch port enabled for PoE power classification override?
In which way does a spine-and-leaf architecture allow for scalability in a network when additional access ports are required?
In which way does a spine-and-leaf architecture allow for scalability in a network when additional access ports are required?
A frame that enters a switch fails the Frame Check Sequence. Which two interface counters are incremented? (Choose two)
A frame that enters a switch fails the Frame Check Sequence. Which two interface counters are incremented? (Choose two)
What are two reasons that cause late collisions to increment on an Ethernet interface? (Choose two)
What are two reasons that cause late collisions to increment on an Ethernet interface? (Choose two)
What is the function of a server?
What is the function of a server?
What is a function of TFTP in network operations?
What is a function of TFTP in network operations?
What are two functions of a server on a network? (Choose two)
What are two functions of a server on a network? (Choose two)
What is the primary function of a Layer 3 device?
What is the primary function of a Layer 3 device?
What is the same for both copper and fiber interfaces when using SFP modules?
What is the same for both copper and fiber interfaces when using SFP modules?
What is a characteristic of spine-and-leaf architecture?
What is a characteristic of spine-and-leaf architecture?
What are two descriptions of three-tier network topologies? (Choose two)
What are two descriptions of three-tier network topologies? (Choose two)
What benefit does controller-based networking provide versus traditional networking?
What benefit does controller-based networking provide versus traditional networking?
Which purpose does a northbound API serve in a controller-based networking architecture?
Which purpose does a northbound API serve in a controller-based networking architecture?
What is the name of the layer in the Cisco borderless switched network design that is considered to be the backbone used for high-speed connectivity and fault isolation?
What is the name of the layer in the Cisco borderless switched network design that is considered to be the backbone used for high-speed connectivity and fault isolation?
What technology should be recommended for a company seeking to interconnect several branch offices with high-speed converged traffic?
What technology should be recommended for a company seeking to interconnect several branch offices with high-speed converged traffic?
Which two WAN architecture options help a business improve scalability and reliability for the network? (Choose two)
Which two WAN architecture options help a business improve scalability and reliability for the network? (Choose two)
Which WAN access technology is preferred for a small office/home office architecture?
Which WAN access technology is preferred for a small office/home office architecture?
Which two functions are performed by the core layer in a three-tier architecture? (Choose two)
Which two functions are performed by the core layer in a three-tier architecture? (Choose two)
Which function is performed by the collapsed core layer in a two-tier architecture?
Which function is performed by the collapsed core layer in a two-tier architecture?
What identifies the functionality of virtual machines?
What identifies the functionality of virtual machines?
Study Notes
OSI Model and Networking Concepts
- The OSI model defines network functions at each layer, facilitating understanding of information travel within networks.
- A Layer 2 switch floods packets to all ports except the one that received a frame with an unknown destination MAC address.
- A broadcast frame has the destination MAC address of ff:ff:ff:ff:ff:ff.
Power over Ethernet (PoE)
- A switch port with PoE power classification override shuts down and becomes err-disabled if it exceeds the maximum power threshold.
Spine and Leaf Architecture
- In spine-leaf architecture, scalability is achieved by adding leaf switches that connect to all spine switches.
Network Interface and Errors
- On a frame that fails the Frame Check Sequence, both CRC and input errors counters are incremented.
- Late collisions increment due to exceeding cable length limits or a half-duplex configuration on one connection side.
Server Functions
- Servers provide shared applications and simultaneously handle requests from multiple workstations.
TFTP and Network Operations
- TFTP transfers IOS images from a server to a router, facilitating firmware upgrades.
Layer 3 Device Functionality
- The primary function of a Layer 3 device is to pass traffic between different networks.
SFP Modules
- Copper and fiber interfaces using SFP modules can be hot-swapped, ensuring minimal service interruption.
Three-Tier Network Topology
- In three-tier topologies, the network core maintains connectivity during device failures, while the distribution layer supports both Layer 2 and Layer 3 technologies.
Controller-based Networking
- Controller-based networking centralizes configuration and monitoring, improving efficiency compared to traditional setups.
Northbound API
- A northbound API in controller-based networking allows communication between the controller and applications.
Core Layer in Cisco Borderless Network
- The core layer in Cisco's architecture serves as the backbone for high-speed connectivity and fault isolation.
Ethernet WAN
- Ethernet WAN is ideal for interconnecting branch offices, enabling high-speed converged traffic for voice, video, and data.
WAN Architecture for Scalability
- Dynamic routing and dual-homed branches are WAN architecture options that enhance network scalability and reliability.
Preferred WAN Access for Small Offices
- Broadband cable access is the preferred WAN technology for small office/home office setups.
Core Layer Functions in Three-Tier Architecture
- The core layer provides uninterrupted forwarding services and ensures timely data transfer between layers.
Collapsed Core Layer
- In two-tier architecture, the collapsed core layer enforces routing policies.
Virtual Machines Functionality
- Virtual machines are managed by a hypervisor, which can virtualize components like CPU, memory, and storage.
Cloud Services and Operating Systems
- Organizations using cloud services can select platforms allowing the installation of their own operating systems on virtual machines.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge with these flashcards on key concepts from the CCNA curriculum. This quiz includes questions about the OSI model and Layer 2 switch behavior, which are essential for network understanding. Perfect for anyone preparing for their CCNA certification.
