Describe how a network works

    • A successful PINGing of a host exhibits the connectivity through layers 1, 2, and 3 of an OSI network model.
    • Simple Mail Transfer Protocol (SMTP) and Telnet are application layer protocols of the Internet protocol (IP) suite.
    • Cable modem is used to connect a CATV cable to a computer/router through an Ethernet interface.
    • A Wireless Access Point (WAP) is used to connect wireless hosts to a wired LAN.
    • The Gigabit Ethernet (1000Base-LX) standard supports a maximum cable length of 5000 meters.
    • The 1000Base-LX/SX Ethernet types use fiber cables.
    • The Session layer of the OSI model manages communication between communication entities in a network.
    • The Session layer of the OSI model provides dialog management and assists the upper layers in connecting to services on the network.

To get a glimpse of the CCNA certification exam PrepKits, download its free demo version (which contains 15 free practice questions). Click the link below:

      • 640-802 CCNA: ICND1 and ICND 2
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      • 640-816 – CCNA: ICND2
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AND

      • 640-822 CCNA: ICND1
        download link: https://www.ucertify.com/exams/Cisco/640-822.html

Either choose 640-802 as a single exam option or both the 640-816 and 640-822 to become the CCNA certified.

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The CompTIA A+ is being updated and from September 2006 candidates will have to take the CompTIA A+ Essential exam along with the CompTIA A+ 220-602 exam to gain CompTIA A+ credentials for A+ certified IT Technician. The CompTIA A+ 220-602 exam will focus on how to apply technology skills in specific job environments, such as IT Technician, IT Administrator, Service Technician, Field PC Technician, or Computer Technician. With the introduction of the 2006 A+, candidates will have to lay emphasis on Windows 2000, XP, and 2003 versions. The new pattern of CompTIA A+ IT Technician has specified more than twenty objectives, which are grouped under eight topics. Following are some important areas in which an individual should possess good knowledge before taking the 220-602 IT Technician test:

  1. Adding, removing, and configuring personal computer components.
  2. Performing preventive maintenance of personal computer components.
  3. Identifying appropriate applications for laptop-specific communication connections such as Bluetooth, infrared, cellular WAN, and Ethernet.
  4. Identifying appropriate laptop-specific power and electrical input devices and determining how amperage and voltage can affect performance.
  5. Using command-line functions and utilities, including proper syntaxes and switches, to manage operating systems.
  6. Pass A+ certification exam in first attempt. Download latest exam simulation, questions, tutorial and study guide for A+:

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Personal Computer Components

  • If two drives are attached to one controller in a computer, one drive should be set as Master and the other as Slave.
  • If you are unable to open the CD-ROM drive tray by pushing the Eject button on the front panel, open it by inserting a pin into the eject hole on the CD-ROM drive.
  • Secure Digital (SD) card is a non-volatile memory card format used in portable devices such as mobile phones, digital cameras, and handheld computers.
  • CD-ROM, SD card, USB Pen drive, floppy disk, etc., are removable storage media.
  • The serial port comes with two types of connectors, 9-pin and 25-pin. It sends data one bit at a time, over a single wire.
  • A standard IDE/EIDE drive cable has 40 wires.
  • Direct Memory Access (DMA) optimizes the I/O transfer speed in a computer.
  • Pass A+ certification exam in first attempt. Download latest exam simulation, questions, tutorial and study guide for A+:

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    uCertify (July 9, 2009) In the current IT scenario, corporate recruiters are looking for highly skilled and qualified professionals who can match their standards of excellence, as well as their clients’ needs. Not only do they want candidates who have the right combination of skills and experience, but they also require talented people who can improve their company’s productivity and profitability. So, if you have the determination, enthusiasm, and commitment, uCertify can help you build your career through its latest UM0-100 – OMG-Certified UML Professional certification exam PrepKit.

    The UML certification exam, originally introduced in 1994, is an international, vendor-OMG (Object Management Group). The Unified Modeling Language (UML) is an open method used to specify, visualize, modify, construct, and document the artifacts of an object-oriented software intensive system under development. UML offers a standard way to write a system’s blueprints, including conceptual components such as actors, business processes and system’s components, and activities as well as concrete things such as programming language statements, database schemas, and reusable software components.

    uCertify, a leading provider of IT Certification exam preparation solutions, has recently launched its new simulation software for UM0-100 – OMG-Certified UML Professional. To get a glimpse of the UM0-100 PrepKit, you can download its free demo version (which contains 15 free practice questions) from uCertify’s web site. Click the link below:

    https://www.ucertify.com/exams/OMG/UM0-100.html
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    Posted in OMG.

    The Servlet Technology Model

    • The getWriter() method of the ServletResponse interface returns a PrintWriter object suitable for writing character data in the response.
    • The setValue() method of the Cookie class is used to assign a new value to a cookie after the cookie is created.
    • A cookie is created by the server on request from a client. It is stored on a client computer.
    • The getOutputStream() method returns a ServletOutputStream suitable for writing binary data in the response.
    • The getWriter() method of the ServletResponse interface returns a PrintWriter object suitable for writing character data in the response.
    • The sendError() method of the HttpResponse interface sends an error response to the client using the specified status code and message.
    • The getRequestURL() method of the HttpServletRequest interface returns the URL associated with the request as a String.
    • The getCookies() method of the HttpServletRequest interface returns an array of cookie objects that a client sends with a request. However, if no cookies are sent, this method returns a null value.
    • A servlet has three life cycle methods. They are init(), service(), and destroy().
    • A servlet has no main() method. The container is responsible for managing the life-cycle of a servlet.
    • The servlet init parameters are read only once when the container initializes the servlet.
    • Before calling the init() method, a servlet class must be loaded and instantiated.
    • The element of the deployment descriptor declares the initialization parameters that are applicable for an entire Web application.
    • For each request, the Container creates a separate thread.
    • The init() and destroy() methods are called only once in the life of a servlet.

    Pass SCWCD Certification Java 1.4 /J2EE in a first attempt:
    The pre-requisite for this certification is the SCJP certification exam.

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    Fundamental Object-Oriented Concepts

  • In Java, a narrowing conversion is also known as an explicit type conversion or casting.
  • A byte can represent values between -128 to 127.
  • An array, in Java, is an ordered collection of primitives, object references, or other arrays. All the elements of an array must be of the same type, except in case of polymorphism.
  • Array elements are initialized to default values, wherever they are created.
  • The increment operator can be used in either of the two forms given below:
    1. Prefix form: In the prefix form, it appears before the operand. For example, ++a;
    2. Postfix form: In the postfix form, it appears after the operand. For example, a ++;
  • Numeric promotions are used to convert the operands in a numeric expression to a common type before an operation is performed between the operands.
  • In Java, there are two kinds of numeric promotions as follows:
    1. Unary numeric promotion
    2. Binary numeric promotion
  • Pass SCJA Certification Java 1.2 in a first attempt:

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    Earning a Microsoft certification acknowledges your expertise in working with Microsoft products and technologies and sets you apart from the crowd as a development professional. Microsoft certification demonstrates that you have the ability to successfully implement Microsoft business solutions for your organization or client.

    This article will provide a basic understanding of the scope of the certification and will also give details about the certification along with the useful resources to get started.

    Introduction

    With .NET, Microsoft is also espousing a vision, this time about how the Internet can make businesses more efficient and deliver services to consumers. The present enterprise setup’s need to have n-tier architecture with diverse platforms and object models communicating with each other. The present applications are to be created such that those applications have to run in any platform (like Windows, Linux, Mac, Unix etc.) and which consist of components written in many programming languages and object models.

    The framework’s Base Class Library provides a large range of features including user interface, data and data access, database connectivity, cryptography, web application development, numeric algorithms, and network communications. The class library is used by programmers, who combine it with their own code to produce applications. Many language vendors have tried to upgrade their languages, but there is a frontier to which they have been victorious since they have to maintain backward competence and face many additional problems too. To resolve the problem of the existing programmers Microsoft has come with a very promising solution “The .NET Platform”.

    .NET provides a number of benefits that will make developers further productive, trim down the number of bugs, alacrity application development, and simplify deployment. IT managers are understandably cautious, since .NET is a new technology that requires a moderately sharp learning curve. For most organizations, however, the benefits will far overshadow the negatives; and with .NET, you’ll see great productivity gains for future development projects.

    Pass MCTS: Microsoft Visual Studio 2008 in a first attempt:

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    Q. What is the LPI 117-202 exam?
    A. The Linux Professional Institute Certification (LPIC) is a certification in the field of Linux. Each LPIC level requires successful completion of two exams for certification. The LPI certification program is designed to certify the competency of system administration using the Linux operating system and its associated tools. It is designed to be distribution neutral, following the Linux Standard Base and other relevant standards and conventions. The LPI 117-202 certification is the first of two Advance-level system administrator certification exams offered by the Linux Professional Institute (LPI). The LPI 117-202 exam is designed to test the knowledge of an examinee on implementing and maintaining Web services, performing file sharing, network client management, etc.

    Q. What are the prerequisites for the LPI 117-202 exam?
    A. To pass LPI 117-202, you first should have to pass LPI 117-201.
    Q. What credit does the LPI 117-202 exam provide?
    A. LPI 117-202 exam provides the Advance Level Linux Professional Certification.

    It is required to pass the following certification exams:

    Q. What certificate does it provide?
    A. It provides Advance Level Linux Professional (LPIC-2).

    Q. How many questions are asked in the test?
    A. In the LPI 202 exam, 55 questions are asked.
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    Q. What is the LPI 117-102 exam?
    A. The Linux Professional Institute Certification (LPIC) is a certification in the field of Linux. Each LPIC level requires successful completion of two exams for certification. The LPI certification program is designed to certify the competency of system administration using the Linux operating system and its associated tools. It is designed to be distribution neutral, following the Linux Standard Base and other relevant standards and conventions. The LPI 117-102 certification is the first of two junior-level system administrator certification exams offered by the Linux Professional Institute (LPI). The LPI 117-102 test measures your ability to manage shells, scripting and data, set user interfaces and desktops in the Linux operating system. It also tests your knowledge on the Linux administration, networking fundamentals, and basic network security.

    Q. What are the prerequisites for the LPI 117-102 exam?
    A. To pass LPI 117-102, you first should have to pass LPI 117-101.
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    Creating a WPF application