The access layer describes the network components used to provide an end device access to the network and the LAN. Ethernet Frame (7.2.1) The Ethernet protocol standards define many aspects of network communication including frame format, frame size, timing, and encoding. When messages are sent between hosts on an Ethernet network, the hosts format the…
The Access Layer – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • Can you explain the process of encapsulation and Ethernet framing? • Can you explain how to improve network communication at the access layer? Key Terms This chapter uses the following key terms. You can find the definitions in the…
Coaxial Cable – 100-150 Exam Guide
Coaxial was one of the earliest types of network cabling developed. Coaxial cable is the kind of copper cable used by cable TV companies. It is also used for connecting the various components which make up satellite communication systems. Coaxial cable has a single rigid copper core that conducts the signal, as shown in Figure…
Network Media – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following question: What are the common types of network cables? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. coaxial cable fiber-optic cable Introduction (6.0) Kishori knows that the 15 to 20 devices in…
Security – CLF-C02 Study Course
Security The job of the security pillar is to help protect your assets, your systems, and your information associated with AWS. This pillar should also assist you with risk assessments and your mitigation practices. This pillar consists of the following important design principles: Use strong identity practices in your architecture: Fortunately, AWS provides tools to…
Operational Excellence – CLF-C02 Study Course
Operational Excellence The overall objective of the operational excellence pillar is to make sure you run and monitor systems to ensure that they are providing value for the business goals of the organization. This pillar focuses on operational best practices for running and monitoring systems and continuously improving processes and procedures. Note While many of…
The AWS Well-Architected Framework
The AWS Well-Architected Framework You might think that really smart engineers sat down to pen the AWS Well-Architected Framework based on their experience with cloud design. That is only partially true. To provide you with a document as critical as the Well-Architected Framework, engineers and architects also analyzed actual implementations of successful designs by some…
Agility – CLF-C02 Study Course
Agility Thanks to the pay-as-you-go model of AWS, engineers can really focus on innovation and new business solutions instead of worrying about infrastructure and other resource shortfalls. Before the broad adoption of AWS solutions, engineers would waste time and money overprovisioning resources in an attempt to provide reliability and performance, even under peak load conditions….
High Availability (HA) – CLF-C02 Study Course
High Availability (HA) High availability (HA) involves designing an AWS solution in a way that keeps systems and services operational and accessible for long, extended periods of time. High availability is commonly presented as a percentage of uptime. Most companies today are looking for 99.9% to 99.999% uptime. Incredibly, various services of AWS offer well…
The Benefits of the Global Infrastructure
The Benefits of the Global Infrastructure Perhaps at the very core of AWS is what makes it all possible: the AWS global infrastructure (also termed the global architecture). This is what makes the incredible elasticity, scalability, and reliability possible across a vast number of IT services. The AWS global infrastructure is made up of many…