CompTIA Network+ Certification Study Guide part 59 docx

... This chapter will help you to put together all of the concepts you’ve learned throughout this study guide, to help you use them in troubleshooting real-world issues that you might encounter on ... 575 TROUBLESHOOTING THE PHYSICAL LAYER 581 TROUBLESHOOTING THE DATA LINK LAYER 591 TROUBLESHOOTING THE NETWORK LAYER 598 TROUBLESHOOTING THE TRANSPORT LAYER 603 TROUBLESHOOTING THE SESSION...

Ngày tải lên: 04/07/2014, 13:21

... more immune to interference the signal becomes. If part of the transmis- sion is corrupted, the data can still be recovered from the remaining part of Note One megahertz represents 1 million cycles ... the MAC layer is particularly noteworthy and has significant consequences for the security of wireless net- works. This means that data at the higher levels of the OSI model, particu- lar...

Ngày tải lên: 04/07/2014, 13:21

... com- bined with the zip code is a unique combination that identifies a particular house or building just as an IP address identifies a particular host. Figure 7.3 illustrates this concept. Large networks ... Class E addresses, which are considered experimental at this time. In addition, there are several guidelines regarding allowable or legal addresses for network IDs and for host IDs. As...

Ngày tải lên: 04/07/2014, 13:21

... included (as you’ll recall, the physical or HEAD OF THE CLASS… Network+ Exam is Focused on TCP/IP … Period. For those of you taking the Network+ exam, you will need to know TCP/IP in detail. It’s ... in detail. It’s the most commonly used protocol today and the most tested on the exam. On the Network+ exam, the term IPX/SPX (as well as the others) will come up a lot so it may appea...

Ngày tải lên: 04/07/2014, 13:21

... performing a security audit for a company to determine 3. their risk from various attack methods. As part of your audit, you work with one of the company’s employees to see what activities he performs ... various authentication methods. One of the methods being described uses a time-stamped ticket as part of its methodology. Which authentication method would match this description? A...

Ngày tải lên: 04/07/2014, 13:21

... [-h] dig [global-queryopt ] [query ] CHAPTER 11: Network Troubleshooting Tools 550 use a particular route. This is particularly useful if you’re creating multiple routes to the same network as a fault ... configured on the client.  set querytype=X Restricts the query type so that it only returns a particular type of records. You can restrict nslookup queries to look for CNAME records, MX...

Ngày tải lên: 04/07/2014, 13:21

... information: Subnet Mask: 255.255.0.0 Default Gateway: 172.16.0.1 DNS Servers: 172.16.0.100 172.16.0.101 As part of a recent network redesign, you had to change the default gate- way used by your clients

Ngày tải lên: 04/07/2014, 13:21

... addressing of, 593 OSI model, 242–243 troubleshooting, 591 598 , 623 contention methods for, 592 polling methods for, 592 recognizing devices of, 594 595 token passing methods for, 592 Data terminal ... 527, 594 troubleshooting, 591 598 , 623 encapsulation of data, 253 function of boundary layers, 255 API, 256 NDIS, 255 TDI, 256 Microsoft model, 253 network layer, 245–248 troubl...

Ngày tải lên: 04/07/2014, 13:20

... Data CompTIA Network+ certification study guide / Robert J. Shimonski [et al.]. — 2nd ed. p. cm. Includes index. ISBN 978-1 -597 49-429-8 (pbk. : alk. paper) 1. Computer networks—Examinations Study ... Syngress Publishing, Inc. Elsevier, Inc. 30 Corporate Drive Burlington, MA 01803 CompTIA Network+ Certification Study Guide Copyright © 2009 by Elsevier, Inc. All rights re...

Ngày tải lên: 04/07/2014, 13:20

... technical editor for Security+ Study Guide and DVD Training System, (ISBN: 978-1-931836-72-2, Syngress), lead author and technical editor for Network+ Study Guide & Practice Exams: Exam ... Building Enterprise DMZs (ISBN: 1597 491004), Configuring Juniper Net- works NetScreen & SSG Firewalls (ISBN: 1597 491187), How to Cheat at Securing Linux (ISBN: 1597 492078), How to...

Ngày tải lên: 04/07/2014, 13:20