comptia linux certification study guide pdf

... to address data packets from the sending to the receiving computer As you’ve worked through this guide, you’ve learned that routing takes place at the network layer, and routing is all about recognizing ... utilities that have been discussed in Chapter 11, as well as the traceroute utility for UNIX and Linux computers Computers and routers using IP can report errors and exchange control and status ... The best tools to check connectivity at the network layer are ping, tracert, traceroute (fr UNIX/Linux), and pathping (for Windows 2000/2003), which we discussed in Chapter 11 You should also

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... single client in your environment Windows NT, 2000, 2003, and UNIX/Linux servers can act as a DHCP server; all Windows and UNIX/Linux can act as clients You can use the ipconfig /release and ipconfig ... connectivity problems At the network layer, you used ping and tracert (or traceroute for a UNIX/Linux computer) to determine if network packets were being properly routed from one host to another ... questions to ask (and of whom) vary according to the situation, but the following can serve as a guideline to get you started:: Exactly what task were you trying to perform when the problem ■ ■

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... following commands is a Linux-based command used 1 to troubleshoot DNS? A DNSLookup B Nslookup C Dig D Query Correct answers and explanations: C Answer C is correct, because Dig is a Linux-based command ... starts and ends You have an environment that has many Linux-based machines on 9 it Which of the following tasks can be performed on your Linux-based machines with the ifconfig command? Choose ... incorrect because dig is a com-mand used to perform DNS queries and is used to troubleshoot from Linux-based systems Answer E is incorrect because nslookup is a command used to perform DNS queries

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... Trang 2CompTIA Network+ Certification Study Guide Trang 3This page intentionally left blankTrang 4CompTIA Network+ Certification Study Guide Exam N10-004 2E Robert J Shimonski ... Data CompTIA Network+ certification study guide / Robert J Shimonski [et al.] — 2nd ed p cm Includes index ISBN 978-1-59749-429-8 (pbk : alk paper) 1 Computer networks—Examinations—Study guides ... Syngress Publishing, Inc Elsevier, Inc 30 Corporate Drive Burlington, MA 01803 CompTIA Network+ Certification Study Guide Copyright © 2009 by Elsevier, Inc All rights reserved Printed in the United

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... but are the most popular and must be understood to pass the wireless objectives on the Network certification exam overview of wireless Communication in a wireless Network Wireless networks, like ... information to get you to the point where you can understand FHSS and DHSS Make sure that you study the next sections carefully. Frequency hopping spread spectrum As the name implies, FHSS works

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... wireless manufacturers or can be easily changed through a Windows registry modification or through Linux system utilities Once a valid MAC address is identified, the attacker needs only to reconfigure ... Although it would take addi-tional resources to build a rogue AP, these tools will run from any Linux machine Once an attacker has identified a network for attack and spoofed his MAC address to

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... but no published specification currently exists UNIX and Linux clients can connect to SMB shares using smbclient from SAMBA or smbfs for Linux Server implementations of SMB for non-Microsoft ... (or available for use) on non-Microsoft operating system-based computers Computers running UNIX, Linux, and other non-Microsoft operating systems typically use DNS for name resolution although ... used to transmit e-mail messages between servers and from clients (such as Microsoft Outlook or Linux’s sendmail) to e-mail servers (such as Microsoft Exchange) However, most e-mail clients use

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... administrator for a small company that runs 8 two Windows servers (Windows Server 2003) and two Linux servers (SUSE Linux) You need to lock down the connections to the switch via port security; this essentially ... essentially means you will need to retrieve the MAC addresses on the systems MAC addresses are found on Linux server by issuing which command? A ipconfig /a B ifconfig /a C winipcfg /a D ifconfig –a From

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... performance making small changes to the access controls to more easily manage the rule sets Using these guidelines, administra-tors should be able to quickly get the site up and running without creating ... PPTP is so simple, it is frequently implemented, even in non-Microsoft OSs such as Mac OS X and Linux As a simple protocol, it is ideal for small low-power devices, such as mobile phones and personal

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... Acronyms Two specific abbreviations need to be explained to avoid confusion For general security study, AAA is defined as “Access Control, Authentication, and Auditing.” Do not confuse this with ... Sarbanes-Oxley Act and the Health Insurance Portability and Accountabil-ity Act of 1996 (HIPAA) guidelines may refer to CIA as “confidentiality, integrity, and authentication.” Trang 8access ... be used if the OS was designed to be used by multiple users Windows, Novell Netware, UNIX, and Linux have all had local authentication paths early in their development Although this is the most

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... (Internet Authentication Services [IAS]), Microsoft WinWin-dows 2008 (Network Policy Server [NPS]), and Linux systems using Kerberos or through non-OS implementations such as RSA Enterprise SSO (ESSO) ... Policies can be configured in Microsoft Windows 2003 through IAS, in Windows 2008 through NPS, and in Linux variants through FreeRADIUS Biometrics Biometric devices can provide a higher level of authentication ... SBR EE for Windows XP/2003, Sun Solaris 9/10 [SPARC] and 32-bit versions of Red Hat Enterprise Linux ES 4.0/5) Configure RADIUS clients (routers, switches, or WAPs) providing the ■ ■ RADIUS server

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... accounts are configured off a standard guideline Policies provide guidelines on who can create user accounts for instance Procedures are much more than guidelines Procedures lay out each step ... asks you over the phone to develop a calcu-lated plan of action to guide decisions and achieve sound outcomes that provide guidelines that the installation contractors will use on Trang 7ChApTEr ... comparing your “normal” conditions to previous peri-ods of operation A calculated plan of action to guide decisions and achieve sound ■ ■ outcomes is the goal of creating and adhering to policies,

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... 14 A 15 Trang 4ChApTEr 11 ExAM oBJECTIvES IN ThIS ChApTEr INTroduCTIoN Throughout this exam guide, we’ve talked about the fundamentals of network protocols and network operating systems In ... you in troubleshooting your network, there are many software utilities for both the Windows and Linux operating systems that will assist you in pinpointing the exact nature of a failure You’ll

Ngày tải lên: 04/07/2014, 13:21

... tools that are specific to Linux- and UNIX-based operating systems utilizing the ifconfig Command You’ll use the ifconfig command to configure the NICs installed in a Linux computer, as well as ... Command The dig command is the Linux equivalent to nslookup in Windows – it’s used to send name resolution queries to DNS servers to troubleshoot name resolution on a Linux-based client computer ... other components of the network infrastructure Many of the troubleshooting tools available for Linux and UNIX are similar or even identical to tools we’ve already covered for Windows For example,

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... probably guess, traceroute is the Linux and UNIX equivalent to tracert on a Windows computer. By typing traceroute www.mycompany.com from the command prompt of a Linux computer, you’ll see output ... nbtstat is useful for troubleshooting NetBIOS- related issues. Linux Tools ifconfig is used to configure the network adapter on a Linux or  UNIX-based computer, much like the Network Connections ... similar to nslookup in Windows, and it is used to test DNS name resolution for Linux computers.  traceroute is the Linux equivalent to tracert in Windows and produces nearly identical output.

Ngày tải lên: 04/07/2014, 13:21

... and Linux command-line utilities have a A: Help switch, which you can access using the –? or /? switch after typing in the name of the command. SELF TEST Which of the following commands is a Linux-based ... and HoundD. 9. You have an environment that has many Linux-based machines on it. Which of the following tasks can be performed on your Linux-based machines with the ifconfig command? Choose ... 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

Ngày tải lên: 04/07/2014, 13:21

... network traffic. By following a few simple guidelines, you can prevent any noticeable performance degradation from being created. One popular networking guideline pertaining to the use of bridges ... difficulties in establishing or maintaining a connection include cable type and grade. Following the guidelines surrounding the maximum allowable segment length for various network/cable types is

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... HTTP uses TCP port 80 and not UDP Be very aware of the well-known ports listed throughout this guide as you prepare for the exam. TrouBlEShooTING ThE SESSIoN lAyEr The session layer handles ... can communicate effectively Part of what is negotiated includes all appropriate communications guidelines Otherwise, machines may bombard each other with too much data to be processed, or both ... server or client to allow access to the AppleTalk protocol for Macintosh and OSX resources, UNIX and Linux servers and clients, as well as the Gateway Services for NetWare Another common function of

Ngày tải lên: 04/07/2014, 13:21

... administrator for a small company that runs 8 two Windows servers (Windows Server 2003) and two Linux servers (SUSE Linux) You need to lock down the connections to the switch via port security; this essentially ... essentially means you will need to retrieve the MAC addresses on the systems MAC addresses are found on Linux server by issuing which command? A Ipconfig/a B Ifconfig/a C Winipcfg/a D Ifconfig –a Correct ... with other system commands as they are very similar But answer D is correct Do not forget that Linux is ifconfig; Windows is either winipcfg or ipconfig From the list of choices, which of the

Ngày tải lên: 04/07/2014, 13:21

... accounts are configured from a standard guideline. Policies provide guidelines on who can create user accounts, for instance. Procedures are much more than guidelines. Procedures lay out each ... explanation: D. Policy is the correct answer because it provides guidelines on how to address certain subjects. Procedures are much more than guidelines. Procedures lay out each step needed to accomplish ... asks you over the phone to develop a calculated plan of action to guide decisions and achieve sound outcomes that provide guidelines that the installation contractors will use on how to access

Ngày tải lên: 04/07/2014, 13:21