Cisco advanced routing with Switching (Cisco section) 1–2 days

Day 01

1. What is a Vlan? The role of VLANs?
Vlan: Virtual local Area Network
Role: Broadcast control, increased security, bandwidth utilization, reduced latency

2. What is Trunk? What are the Trunk patterns?
Trunk: Trunk link that can host multiple VLANs
Trunk mode:
Access (Access)
Main road (Trunk)

Dynamic Desire (desirable) active
Dynamic Automatic (Auto) passive

3. What is the role of EtherChannel?
Eternetchannel (Ethernet channel)
Role:
1) Multi-line load balancing, increased bandwidth
2) Line Backup (when one line fails, other lines communicate, no packet loss)

4. What is DHCP? What is the role of DHCP?
DHCP: Dynamic Host Configuration Protocol
Role: Automatically assign IP addresses to clients

Day 02

1. What is a three layer switch? What is the difference between a two-layer interchange and a three-tier interchange and route?
Layer three switches: switches with network layer routing capabilities called layer three switches
Difference:
The second layer switch: belongs to the data Link layer device, which realizes the data frame forwarding according to the MAC address table.
Layer Three switch: Layer three switching technology is the technology that combine routing technology with switching technology. After routing the first data stream, the
It will generate a map of the MAC address and IP address, and when the same data stream passes again, it will be directly from layer two through this table
routing, which eliminates the network delay caused by router routing and improves the efficiency of packet forwarding.
Routers: Routers work in the third layer of the OSI layer seven protocol, whose primary task is to receive packets from a network interface, based on
The destination address contained therein is decided to be forwarded to the next destination address.

2. What is the classification of routing protocols according to the application range? What are the classes of dynamic routing according to the algorithm?
1) Depending on the scope of application, routing protocols can be divided into two categories
The routing protocol within an as is called the Internal Gateway Protocol: the Internal Gateway routing protocol has the following: RIP-1, RIP-2, IGRP, EIGRP,
Is-is and OSPF;
The routing protocol between as is called the External Gateway Protocol External Gateway Protocol (also called Inter-Domain routing protocol): there are two types of inter-domain routing protocols: external
Gateway Protocol (EGP) and Border Gateway Protocol (BGP)
2) Dynamic routing according to the algorithm can be divided into: Distance vector routing protocol, link state routing protocol
Distance Vector Routing protocol: Select Route RIP,IGRP based on the number of routes that are routed from the source network to the target network
Link-State routing protocol: select route Ospf,is-is for each path from the source network to the target network

Cisco advanced routing with Switching (Cisco section) 1–2 days