Block 3 unit 4 Device Layers

Flashcards about the Cisco Hierarchical Internetworking Model

Cisco’s hierarchical internetworking model is a ____ layer model for _____ design first proposed by Cisco.

three. network

The Three layers of the Cisco Hierarchical internetworking model

Core, Distribution, and Access layers.

The core layer is often called a _______ backbone.

High-speed

Given the function of the core layer, what process should you consider when determining whether to add additional routers to an existing core.

scalability

Given the function of the core layer, the decision to use technologies like DLL(Data Link Layer), fiber optics, or ATM(asynchronous transfer mode) would correlate to what process.

Reliability and Redundancy

What process of the core layer specifically works to avoid things that may slow down the core layer like ACL(access-control list) checking, data encryption, and address translate using proper routing and convergence methods.

protocols

The Primary function of the distribution layer is to provide ______, ______, ______ and ___________________.

routing, filtering, WAN access, and to determine how packets can access the core when necessary.

The distribution layer of the Cisco hierarchical internetworking model is where _____ should be implemented.

Policies

The distribution layer looks at accomplishing four things in regards to network operations. List two:

1. Implement tools such as access lists, packet filtering, queuing, security and network policies, including address translation and firewalls.

2. Redistribute between routing protocols, including static routing.

3. Route between VLANs and other workgroup support functions

4. Define broadcast and multicast domains.

The access layer is the aggregation point and includes hubs and switches to ________ such as ______ to the network.

Connect nodes (hosts), workstations

The access layer is sometimes referred to as the ______ layer because the majority of devices connected to the access switch are ________.

Desktop, Desktop computers

Switches deployed at the access layer are characterized as having many ____ and are ______.

ports, low cost

There are four functions associate with the access layer. Name two.

1. Shared bandwidth devices

2. Switched bandwidth devices

3. Layer 2 functions such as VLAN membership

4. Traffic filtering based on MAC