Ethernet Frames (21.2) Ethernet operates in the data link layer and the physical layer. It is a family of networking technologies that are defined in the IEEE 802.2 and 802.3 standards. Ethernet Encapsulation (21.2.1) This module starts with a discussion of Ethernet technology including an explanation of MAC sublayer and the Ethernet frame fields. Ethernet…
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Ethernet Switching – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • How do the OSI model Layer 1 and Layer 2 function in an Ethernet network? • How do the Ethernet sublayers are related to the frame fields? • What is the Ethernet MAC address? • How does a switch…
Number Systems Summary – 100-150 Exam Guide
Number Systems Summary (20.3) The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (20.3.1) • Binary Number Systems—Binary is a numbering system that consists of the digits 0 and 1 called bits. In contrast, the decimal numbering system consists of…
Activity – Decimal to Binary Conversions
Activity – Decimal to Binary Conversions (20.1.7) This activity allows you to practice decimal conversions to 8-bit binary values. We recommend that you work with this tool until you are able to do the conversion without error. Convert the decimal number shown in the Decimal Value row to its binary bits. Refer to the online…
Decimal to Binary Conversion Example
Decimal to Binary Conversion Example (20.1.6) To help understand the process, consider the IP address 192.168.11.10. The first octet number 192 is converted to binary using the previously explained positional notation process. It is possible to bypass the process of subtraction with easier or smaller decimal numbers. For instance, notice that it is fairly easy…
Decimal to Binary Conversion
Decimal to Binary Conversion (20.1.5) It is also necessary to understand how to convert a dotted decimal IPv4 address to binary. A useful tool is the binary positional value table, as shown in Figure 20-3 through 20-10. In Figure 20-3, is the decimal number of the octet (n) equal to or greater than the most-significant…
Number Systems – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • How do you calculate numbers between decimal and binary systems? • How do you calculate numbers between decimal and hexadecimal systems? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. binary…
Cloud and Virtualization Summary
Cloud and Virtualization Summary (19.3) The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (19.3.1) • Cloud and Cloud Services—In general, when talking about the cloud, we are talking about data centers, cloud computing, and virtualization. Data centers are usually…
Virtualization – 100-150 Exam Guide
Virtualization (19.2) Network virtualization combines both hardware and software network resources. Network virtualization comes in many forms and new types of virtualization are being developed. Advantages of Virtualization (19.2.1) One major advantage of virtualization is overall reduced cost: • Less equipment is required – Virtualization enables server consolidation, which requires fewer physical devices and lowers…
Cloud Services – 100-150 Exam Guide
Cloud Services (19.1.3) Cloud services are available in a variety of options, tailored to meet customer requirements. The three main cloud computing services defined by the National Institute of Standards and Technology (NIST) in their Special Publication 800-145 are as follows: • Software as a Service (SaaS) – The cloud provider is responsible for access…