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Overview/Description
Understanding the benefits of computer networks and how they function is important in maximizing communication channels among end users. This course describes the concept of computer networking, introduces the components of a computer network, and explains how users benefit from using networks. The host-to-host communication models were created to help define how network processes function, including the various components of networks and the transmission of data. Understanding the structure and purpose of the most commonly used protocol stack TCP/IP is central to...
Overview/Description
Cisco IOS Software is a feature-rich network system software that provides network intelligence to meet all of today's networking demands. It is the industry-leading, and most widely deployed, network system software. This course describes Cisco IOS Software and the basic Cisco IOS CLI functions and operations. This course also describes how to navigate the Cisco IOS CLI configuration modes, how to use embedded keyboard help, how to manage configurations, and how to use additional Cisco IOS features to improve the user experience in the CLI.
Target Audience...
Overview/Description
Understanding the packet delivery process is a fundamental part of understanding networking devices. You must understand host-to-host communications to administer a network. This course provides a step-by-step analysis of host-to-host communications and the packet-delivery process over a routed network. The course also illustrates the role of Layer 2 and Layer 3 addresses in packet delivery, as well as the role of ARP. Routing is the process by which a packet moves from one location to another. In the terms of computer networks, it is the process of determining where to...
Overview/Description
Before you start a Cisco Catalyst switch, the physical installation must meet operational conditions. After the switch is turned on and startup is complete, the initial software settings can be configured. Verifying that the switch startup has been completed without error is the first step in deploying a Catalyst switch. The switch must start successfully and have a default configuration to operate on the network. This course presents an overview of switch installation and describes how to verify the initial operation and configuration. The course also describes different...
Overview/Description
Data networks and the Internet provide seamless and reliable communication between people. Applications such as e-mail, web browsers, and instant messaging allow people to use computers and networks to send messages and find information. Data from applications is packaged, transported, and delivered to the appropriate server or application on the destination device. The processes that are described in the TCP/IP transport layer accept data from the application layer and prepare it for addressing at the Internet layer. The transport layer is responsible for the overall end...
Overview/Description
There are various aspects to IP addressing, including calculations for constructing an IP address, classes of IP addresses designated for specific routing purposes, and public versus private IP addresses. There are also two types of IP addresses: IPv4 and IPv6. This course introduces the concepts behind IPv4 addresses. Subnetworks, or subnets, are very common in all but the smallest network environments, segmenting networks into smaller divisions that have their own addresses. To create subnet addresses, some of the bits that are used for the host portion of an IP address...
Overview/Description
When you understand how a switch and router operate, how they communicate, and how to configure basic security, you can move on to understanding an expanded network. VLANs contribute to network performance by separating large broadcast domains into smaller segments. A VLAN allows a network administrator to create logical groups of network devices. These devices act as if they were in their own independent network, even though they share a common infrastructure with other VLANs. This course explains how to implement and verify VLANs and trunking. Routing is the process of...
Overview/Description
As an enterprise grows beyond a single location, it becomes necessary to interconnect LANs in various locations to form a WAN. Several technologies are involved in the functioning of WANs. This course describes the technologies, functions, and characteristics of WANs...
Overview/Description
OSPF is a link-state routing protocol that is often used in networks due to scalability, fast convergence, and multivendor environment support. Understanding OSPF operations and OSPF terms is therefore important for network engineers who would like to design, implement, and troubleshoot scalable networks. In this lesson, a quick overview of link-state routing protocols, OSPF data structures, and OSPF metrics is done before explaining the functions of OSPF and its packet types. The course describes how the link-state database is built using LSAs, explains OSPF areas as a...
Overview/Description
Frame Relay is a standardized WAN technology that is a well-proven, packet-switching, connection-oriented technology that is used to interconnect remote sites. This course describes the basic functionality of Frame Relay, including topologies, reachability issues, and LMI signaling. The course also describes how to configure basic Frame Relay and Frame Relay over point-to-point and multipoint subinterfaces. The course concludes with verification of Frame Relay operations.
Target Audience
Anyone wishing to obtain Cisco Certified Network Associate (CCNA) 200-120...
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