red hat certified engineer study guide

... configuration that is being used by the IOS and that is located in the RAM show startup-configuration – this commands displays the backup configuration that is located in the NVRAM This is the file that ... Trang 1Study Guide Cisco Certified Network Associate 3.0 CCNA 3.0 Version 1 Trang 2CCNA FOUNDATIONS 4 OSI Model ... physical media such that if two devices access the media at the same time, the result is a collision of the two signals Broadcast Domains is a group of devices in the network that receive one another’s

Ngày tải lên: 22/10/2013, 17:15

... Trang 1Red Hat Engineering Content ServicesRed Hat Enterprise Linux 6 Security Guide A Guide to Securing Red Hat Enterprise Linux Trang 4A Guide to Securing Red Hat Enterprise LinuxRed Hat Engineering ... version Red Hat, as the licensor of this document, waives theright to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted byapplicable law Red Hat, Red Hat Enterprise ... on SELinux and its use in Red Hat Enterprise Linux, refer to the Red Hat Enterprise Linux SELinux User Guide For more information on configuring and runningservices that are protected by SELinux,

Ngày tải lên: 25/11/2013, 11:06

... Red Hat Linux 8.0 The Official Red Hat Linux Security Guide Red Hat Linux 8.0: The Official Red Hat Linux Security Guide Copyright © 2002 by Red Hat, Inc. Red Hat, Inc. 1801 Varsity ... the following guides, which discuss the fundamental aspects of Red Hat Linux in greater detail than the Official Red Hat Linux Security Guide: • Official Red Hat Linux Installation Guide for information ... Colophon 111 Introduction Welcome to the Official Red Hat Linux Security Guide! The Official Red Hat Linux Security Guide is designed to assist users of Red Hat Linux in learning the process and practice

Ngày tải lên: 18/04/2014, 10:22

... years, including Master Certified Novell Engineer (MCNE), Certified Novell Instructor (CNI), Microsoft Certified Systems Engineer (MCSE), Microsoft Certified Trainer (MCT), CWNP Certified Wireless ... guides 2 Telecommunications engineers—Certification—Study guides I Title II Title: Certified wireless technology specialist official study guide (PW0-070) TK5105.78.B37 2009 621.384076—dc22 ... content that appears in print may not be available in electronic books. Library of Congress Cataloging-in-Publication Data 1 Wireless LANs—Examinations—Study guides 2 Telecommunications engineers—Certification—Study

Ngày tải lên: 10/08/2014, 12:21

... Wi-Fi Certified logo for devices that are Wi-Fi certified Wi-Fi Protected Access (WPA) Certification Overview The Wi-Fi Protected Access (WPA) certification was derived from the fact that security ... trademark, originally tered in 1999 by WECA and now registered to the Wi-Fi Alliance regis-For additional information, visit www.wi-fi.org Figure 1.6 shows an example of a Wi-Fi certified logo f I ... 802.11g devices that have a maximum data rate of 54 Mbps (OFDM) Think of the language analogy If a group of individuals are speaking two different languages, a translator may be required A discussion

Ngày tải lên: 10/08/2014, 12:21

... devices, both wired and wireless, that can connect to a computer network Wireless LAN client devices include vari-ous types of computers, scanners, print servers, cameras, and other devices that are ... snap All that was required was for the installer to plug the card into the motherboard and it would be recognized and automatically work with the operating system However, this still required user ... point connected to a port on the switch is considered to have direct connectivity 18 B PSE delivers DC power, not RF power The DC power is delivered to an end device such as an access point Trang

Ngày tải lên: 10/08/2014, 12:21

... adjacent channel interference. Some of the symptoms of this type of inter- ference are reduced throughput compared to what is normal, and the equivalent of colli- sions causing data retransmissions. ... applications in use ÛN Desired throughput or performance ÛN Number of users ÛN The following sections discuss how these factors affect the capacity of an access point. What Happens When an Access ... the connected users will increase because they are using a shared medium (air and RF). Therefore performance will potentially be reduced for all users connected to the access point. The access

Ngày tải lên: 10/08/2014, 12:21

... the beamwidth is the angle of measurement of the main RF lobe measured at the half-power point or –3 dB point Beam-width is measured both horizontally and vertically, in degrees Trang 6Azimuth and ... a period of time and is measured at the peaks of the signal from top ele-to botele-tom Amplification of an RF signal will result in gain An antenna is a device that Trang 8can change the coverage ... an amplifier is used in a wireless LAN system, certain regulatory domains require that the amplifier must be certified as part of the system It is best to carefully consider whether an amplifier

Ngày tải lên: 10/08/2014, 12:21

... Will public access be required? If public access to the network is required, that will potentially affect the number of infrastructure devices such as access points required for the deployment ... Manufacturer Guidelines and Deployment Guides The information just presented includes some types of questions that need to be addressed during the site survey process Keep in mind that the actual ... to be used for site survey guidelines and deploy-ment guides These will provide additional information that is helpful in generating a list of questions and concerns that will need to be addressed

Ngày tải lên: 10/08/2014, 12:21

... ceiling ÛN One thing to keep in mind about a predictive site survey is that the accuracy and final results are only as good as the information that was input into the program. It is essential ... shows a predictive analysis site survey tool. FIGURE 9.13 Motorola LANPlanner showing a predictive modeling site survey Listed are some the advantages and disadvantages of using the predictive ... the Driver Installation Guide dialog box will appear. Read this guide and verify you have a supported wireless adapter. 14. At the bottom of the Driver Installation Guide dialog box, click Next

Ngày tải lên: 10/08/2014, 12:21

... What can you put in a particular array? For the exam, you need to know that arrayscan have only one declared type (int [ ], Dog[ ], String [ ], and so on) but thatdoesn’t necessarily mean that ... Sporty // I don't care what anyone says} }The bottom line is this: any object that passes the “IS-A” test for the declaredarray type can be assigned to an element of that array Array Reference ... boolean f = 0; // Compiler error! Be on the lookout for questions that use numbers where booleans are required You might see an if test that uses a number, as in the following: int x = 1; if (x) { }

Ngày tải lên: 13/08/2014, 08:21

... class What about a subclass that tries to inherit a private member of its superclass? When a member is declared private, a subclass can’t inherit it For the exam, you need to recognize that a ... CertPrs8(SUN) / Sun Certified screen 68 Chapter 2: Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Declarations and Access Control You learned that abstract classes ... Color profile: Generic CMYK printer profile CertPrs8(SUN) / Sun Certified Composite Default screen Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Declarations and Modifiers

Ngày tải lên: 13/08/2014, 08:21

... object We don’t know what the format is; the way in which object references are stored is virtual-machine specific (it’s a pointer to something, we just don’t know what that something really is) ... even a String[] holder Within that holder is a bunch of bits representing the value For primitives, the bits represent a numericvalue (although we don’t know what that bit pattern looks like for ... numeric value And because you know by now that Java is not C++, you won’t be surprised that Java operators can’t be overloaded. There is, however, one operator that comes overloaded out of the box:

Ngày tải lên: 13/08/2014, 08:21

... CertPrs8(SUN) / Sun Certified screen Chapter 4: Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Flow Control, Exceptions, and Assertions going to execute no matter what! They ... Sun Certified screen 56 Chapter 4: Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Flow Control, Exceptions, and Assertions CERTIFICATION SUMMARY This chapter covered ... classes that extend RuntimeException ❑ Checked exceptions are subject to the handle or declare rule; any method that might throw a checked exception (including methods that invoke methods that can

Ngày tải lên: 13/08/2014, 08:21

... Sun Certified screen 66 Chapter 4: 17 18 19 Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Flow Control, Exceptions, and Assertions System.out.println(x); } } what ... CertPrs8(SUN) / Sun Certified Composite Default screen Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Self Test 71 B The program will print Hello world, then will print that a RuntimeException ... Color profile: Generic CMYK printer profile CertPrs8(SUN) / Sun Certified Composite Default screen Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Self Test } } } and the

Ngày tải lên: 13/08/2014, 08:21

... Sun Certified Programmer & Developer for Java 2 Study Guide / Sierra / 222684-6 / Chapter 5 Self Test Answers 59CertPrs8(SUN) / Sun Certified Programmer & Developer for Java 2 Study Guide ... 11CertPrs8(SUN) / Sun Certified Programmer & Developer for Java 2 Study Guide / Sierra / 222684-6 / Chapter 6Now wait just a minute, didn’t we just say that Strings were immutable? Sowhat’s all this ... might say, “Well that’s all well and good, but what if someone overrides theString class functionality; couldn’t that cause problems in the pool?” That’s one ofthe main reasons that the String class

Ngày tải lên: 13/08/2014, 08:21

... CertPrs8(SUN) / Sun Certified Programmer & Developer for Java 2 Study Guide / Sierra / 222684-6 / Chapter 7 Trang 3letters, so the hashcode will be identical for both names That’s acceptable, ... sure that objects with the same x value will return identical hashcodes 12 Chapter 7: Objects and Collections CertPrs8(SUN) / Sun Certified Programmer & Developer for Java 2 Study Guide / ... CertPrs8(SUN) / Sun Certified Programmer & Developer for Java 2 Study Guide / Sierra / 222684-6 / Chapter 7 18 Chapter 7: Objects and Collections CertPrs8(SUN) / Sun Certified Programmer

Ngày tải lên: 13/08/2014, 08:21

... Sun Certified Composite Default screen Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Certification Summary 45 CERTIFICATION SUMMARY This chapter covered the required ... Generic CMYK printer profile Composite Default CertPrs8(SUN) / Sun Certified screen 28 Chapter 8: Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Inner Classes Given the following, ... Color profile: Generic CMYK printer profile CertPrs8(SUN) / Sun Certified Composite Default screen Programmer & Developer for Java Study Guide / Sierra / 222684-6 / Chapter Self Test Which two are

Ngày tải lên: 13/08/2014, 08:21