Category: CCNA

CCNA 200-125 1.12: Identify the appropriate IPv6 addressing scheme to satisfy addressing requirements in a LAN/WAN environment (LAB)

IPv6 addressing is designed differently than IPv4.  Subnetting is used in IPv4 to more efficiently use the small number of available addresses. IPv6 has a large enough address space without subnetting to accommodate devices for the foreseeable future.  The local area subnet always uses 64 bits for the routing prefix and 64 bits for the […]

CCNA 200-125 1.10: Compare and contrast IPv4 address types

Understand the different IPv4 address types. Loopback – this IP points back to the device’s TCP/IP stack.  Pinging it tells you whether TCP/IP has been installed and is running. Layer 2 broadcasts – Layer 2 broadcast traffic stays within a local area network (LAN) boundary; known as the broadcast domain. Layer 2 broadcast traffic is […]

CCNA 200-125 1.9: Configure, verify and troubleshoot IPv4 addressing and subnetting (LAB)

Review Cisco’s subnetting best practices if necessary before attempting this lab. PacketTracer Lab: CCNA-200-125-Lab-1.9.pkt Subnetting and Troubleshooting Subnet into two /29 subnets and one /30 subnet.  There will be more IPs in the network range after subnetting. The client machines are already configured with the appropriate IP settings. From the Marketing client, ping its […]

CCNA 200-125 1.8: Apply troubleshooting methodologies to resolve problems

Understand troubleshooting methodologies and approaches to efficiently resolve network issues. Troubleshooting methodology Define the problem Gather information Analyze information Eliminate potential causes Propose hypothesis Test hypothesis Solve problem and document solution Approach: Top-down method: – start at the top of the OSI model Bottom-up method: start at the bottom of the OSI model Divide and […]

CCNA 200-125 1.7: Select the appropriate cabling type based on implementation requirements (LAB)

Understand cabling types based on their implementation  Crossover Switch to Switch (autodetect on most switches will work with straight-through cables, but crossover is the correct choice) Router to Router Router to PC 10Base-T and 100Base-T UTP (1 to 2 and 3 to 6) white-orange | orange | white-green | blue | white-blue | green | […]

CCNA 200-125 1.5: Compare and contrast collapsed core and three-tier architectures

The collapsed core architecture and the three-tier architecture are design approaches, not physical separations.  It’s a way of thinking about the network, not a way of viewing actual network devices. Collapsed core Core and Distribution layers are combined as a single layer The collapsed core devices must be capable of core functions: high speed network […]

CCNA 200-125 1.4: Describe the effects of cloud resources on enterprise network architecture

Two physical servers will use twice the amount of electricity as one physical server, but with virtualization, one physical server can host multiple virtual machines.  That means all components can be shared more efficiently to include power, storage and networking. Virtual infrastructure vs Cloud infrastructure Companies who offer cloud infrastructures are called cloud providers.  You […]

CCNA 200-125 1.3: Describe the impact of infrastructure components in an enterprise network

Firewalls – designed to prevent unauthorized access to your network Adaptive Security Appliances – ASA – A security device that combines firewall, antivirus, intrusion prevention, and virtual private network (VPN) capabilities. It provides proactive threat defense that stops attacks before they spread through the network. Next Generation Firewall – NGFW – A next generation firewall […]