Category: CCNA v3 Routing and Switching

Section 7 – Infrastructure Management (CCNA 200-125 Theory)

1. Configure and verify device-monitoring protocols SNMPv2 SNMP is a network management protocol that enables monitoring of network device. The following are three components that enable SNMP communication. MIB SNMP Manager SNMP Agent The Cisco network device will send all enabled notifications to the SNMP server. Enabling a …

Section 6 – Infrastructure Security (CCNA 200-125 Theory)

1. Configure, verify and troubleshoot port security Static Switch ports configured with port security only accept frames from addresses that have been dynamically learned or manually configured. The switch port enabled with port security would deny access based on an unknown MAC address. Port security default setting is …

Section 5 – Infrastructure Services (CCNA 200-125 Theory)

1. Troubleshoot client connectivity issues involving DNS The IOS command ip name-server configures the DNS server IP address for a Cisco network device. All DNS queries are sent to the DNS server resolve the IP address from a hostname. That enables Telnet hopping that is based on a …

Section 4 – WAN Technologies (CCNA 200-125 Theory)

1. Configure and verify PPP and MLPPP WAN connectivity The following describe the standard reasons for deploying WAN connectivity: enable connectivity between branch offices, data center and cloud information sharing among internal and external organizations Serial Interfaces Serial interfaces connect devices that are assigned as a DCE or …

Section 3 – Routing Technologies (CCNA 200-125 Theory)

1. Describe routing concepts Routers are primarily responsible for logical addressing and best path selection. They forward packets between different subnets, VLANs and across the WAN. They build a routing table with routes comprised of network prefix, metric and next hop address. The router selects the route based …

Section 2 – LAN Switching Technologies (CCNA 200-125 Theory)

1. Describe and verify switching concepts The following is a list of network services provided by switches: switches forward data link layer traffic switches create and maintain the MAC address table switches support segmenting collision domains MAC address table Every network device is assigned a unique hardware address …

Section 1 – Network Fundamentals (CCNA 200-125 Theory)

1. Compare and contrast OSI and TCP/IP models The following describe the network services at each layer of the OSI model. Each lower OSI layer provided services to the next higher layer. Effective troubleshooting should start from the physical layer and verify connectivity to the application layer. Table …