Download GSEC GIAC Security Essentials Certification Exam Guide by Ric Messier PDF
By Ric Messier
"All-in-One Is All You Need."
Get entire insurance of the entire goals on worldwide details coverage Certification's protection necessities (GSEC) examination inside of this accomplished source. GSEC GIAC safeguard necessities Certification All-in-One examination Guide offers studying goals at the start of every bankruptcy, examination assistance, perform examination questions, and in-depth reasons. Designed that can assist you cross the examination very easily, this authoritative source additionally serves as a necessary on-the-job reference.
COVERS ALL examination themes, INCLUDING:
- Networking basics
- Network layout
- Authentication and entry keep an eye on
- Network safeguard
- Linux and home windows
- Encryption
- Risk administration
- Virtual machines
- Vulnerability regulate
- Malware
- Physical safeguard
- Wireless applied sciences
- VoIP
ELECTRONIC content material FEATURES:
- TWO perform assessments
- AUTHOR movies
- PDF eBOOK
Read Online or Download GSEC GIAC Security Essentials Certification Exam Guide PDF
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Additional info for GSEC GIAC Security Essentials Certification Exam Guide
Example text
Fig ure 2-4 Layer-to-layer communication The thing about this factory, though, is that it’s unionized, so when the box gets sent off and delivered, only members from the group that put each layer of packaging on are allowed to remove it. As each package gets delivered, it may also make stops at delivery depots (routers) along the way. Each of these depots has members of the Data Link group to remove that packaging layer and then put a new layer of packaging on before sending the package off to the next depot on its way to the final destination.
Without this approach, you would end up with one large group (program function) handling all data, which would mean a lot of inefficient data handling. This, in turn, may lead to delays in delivery of the data. TCP/IP Architecture The TCP/IP Architecture, also called the DoD (Department of Defense) model, is defined in an RFC dated from 1989, well after TCP/IP had been in widespread use. Any host on the Internet must implement all four layers, which means having at least one protocol in each layer.
Internet Protocol The Internet Protocol handles a couple of really important functions. This logical address also allows us to group systems together, which a physical address doesn’t allow us to do. There are also other functional components of the Internet Protocol that require different header fields. There are two basic functions that IP is meant to implement: addressing and fragmentation. The headers implement fields to assist with those functions. Table 2-1 has all of the fields in the IP header as well as their length and purpose.