Used to communicate IP status and error messages between hosts and routers
Uses IP to route its messages between hosts
Must be implemented with IP
remember, IP is just a packet delivery system
transmits and routes datagrams from sources to destinations through a series of interconnected networks
it has a checksum in the IP header to detect lost bits
no error detection on the datagram payload though
but has no native mechanism for source host notification
This is where ICMP comes in
its used to report IP errors to the source host
ICMP data is carried as the payload of an IP datagram
After studying this chapter you will be able to: Be familiar with the ICMP message format, know the types of error reporting messages, know the types of query messages, be able to calculate the ICMP checksum, know how to use the ping and traceroute commands, understand the modules and interactions of an ICMP package.
With SMS, several modes are possible for addressing message recipients. The most common
addressing mode consists of using the Mobile Station ISDN Number (MSISDN) in the
[ITU-E.164] format (e.g., þ33612345678). However, other less commonly used addressing
modes are available such as Email addressing, as defined by the IETF in [RFC-2822], or
operator specific numbering schemes (short codes for instance).
An optional addressing feature of SMS consists of conveying sub-addressing information
as part of a message.
Welcome to the module, Internationalization. This module provides a brief introduction of developing applications for the global market. The module covers the process of internationalization and localization to create applications, which are neutral in terms of countries, languages and regions. Internationalized applications require meticulous planning, failing which re-engineering of the application can be costly.
In this module, you will learn about:
PowerPoint is the program that helps you sell your message. PowerPoint is a presentation program that
can create beautiful slideshows with text, images, audio and video, and it is also the program that is used if
you have to make transparencies for the overhead projector.
PowerPoint is the program in Office 2007 that is easiest to learn. You can instantly create nice-looking
material for your sales pitch, your lecture or the screen in your shop window.PowerPoint can do much of
the work for you, so you can concentrate on formulating your messages properly....
Access Control: Mechanism(s) used to restrict access to an object.
ACL Access Control List. A list of resources and the
permissions or authorizations allowed.
Active Code/Active Content: Generic term for software delivered via the world Wide
Web that executes directly on the user's computer.
Alert: A formatted message describing a circumstance relevant
to network security. Alerts are often derived from critical
The nonverbal aspect of an ad or commerical carries half the burden of communicating te big idea. in fact, the nonverbal message is inseparable from te verbal. As advertising copy goes through the editing process, copywriters must be prepared for an inevitable (and sometimes lengthy) succession of edits and credits from agency and client managers and legal departments. Copywriters must be more than creative; they must be patient, flexible, mature and able to exercise great self control.
Multiple-choice items require students to read, reflect, or compute, and then to select the alternative
that best expresses what they believe the answer to be. This format is appropriate for quickly
determining whether students have achieved certain knowledge and skills. Well-designed multiple-
choice items can measure student knowledge and understanding, as well as students’ selection and
application of problem-solving strategies. A carefully constructed multiple-choice item can assess any of
the levels of mathematical complexity from simple procedures to sophisticated concepts.
Children today are communicating over the Internet through a multitude of
ways—MySpace, Xanga and Facebook are just some of the more than 200 social
networking websites. Add in instant messaging, chat rooms, blogging, and the
challenge for parents to keep up is overwhelming. That’s why Time Warner
Cable, your Internet service provider, and CyberAngels, a program of the
acclaimed Guardian Angels organization, have united to help you keep your
child safe. The Internet is a powerful tool, but it’s important to practice some
safety measures and common sense.
The Address Book is a collection of address books provided by Microsoft Outlook, Microsoft Exchange Server, or Internet directory services, depending on how you have set up Outlook. You can use the Address Book to look up and select names, e-mail addresses, and distribution lists when you address messages. When you type a name in the To, Cc, or Bcc box of an e-mail message, Outlook automatically checks to see if the name you typed matches a name in the Address Book. If there is a match, the name is resolved and you can send the message. If there is...
Controlling Mail Messages
As you use Outlook and your e-mail account(s), you will need to delete, store messages in different related folders, sort and find messages.
Once the folders are set-up, you are able to store your related messages in folders when you receive them.or as we will discover later AS we receive them..
Chapter 6 - Choosing the best process and form. This chapter presents the following content: The writing process and effective strategies, the importance of readable formatting, the main types and purposes of business messages, the inverted pyramid structure for writing.
Chapter 9 - Internet control message protocol. Upon completion you will be able to: Be familiar with the ICMP message format, know the types of error reporting messages, know the types of query messages, be able to calculate the ICMP checksum, know how to use the ping and traceroute commands, understand the modules and interactions of an ICMP package.
Chương I: Tổng quát,
Đặt vấn đề,
Lịch sử của RIP.
Giới thiệu về định tuyến (route hoặc routing).
Giới thiệu về giao thức định tuyến RIP( định nghĩa).
Đặc điểm của RIP :
Các giá trị về thời gian ( RIP timer),
Định dạng bản tin RIP (RIP message format),
Các cơ chế của RIP.
Các phiên bản của RIP:
RIP version 1,
RIP version 2.
So sánh 2 loại với nhau (điểm khác và giống nhau)....
Preface Chapter 1: Background Chapter 2: How Does DNS Work? Chapter 3: Where Do I Start? Chapter 4: Setting Up BIND Chapter 5: DNS and Electronic Mail Chapter 6: Configuring Hosts Chapter 7: Maintaining BIND Chapter 8: Growing Your Domain Chapter 9: Parenting Chapter 10: Advanced Features and Security Chapter 11: nslookup Chapter 12: Reading BIND Debugging Output Chapter 13: Troubleshooting DNS and BIND Chapter 14: Programming with the Resolver and Name Server Library Routines Chapter 15: Miscellaneous Appendix A: DNS Message Format and Resource Records Appendix B: Compiling and Installing ...
Các phiên bản SNMP khác nhau những gì ?
+ Khác nhau ở phương thức hoạt động (operation) : SNMPv1 có 5 phương thức, tuy nhiên các version
khác sau này được bổ sung thêm một số phương thức mới.
+ Khác nhau ở cấu trúc bản tin SNMP (message format) : các phiên bản khác nhau sẽ khác nhau ở cấu
trúc các bản tin.
Chapter 4: Using HTML
solicitations—come from and what tools are used to create them. The answer is: from email marketing services.3 Constant Contact is one of the more popular email marketing services. A Constant Contact customer creates and maintains a database of email recipients with the service and composes formatted emails using Constant Contact’s web-based editor and online templates. Constant Contact charges a monthly fee for its service based on the number of recipient email addresses. Constant Contact’s approach is to build an email as a series of sections or blocks.
Internet telephony refers to communications services—voice, facsimile, and/or
voice-messaging applications—that are transported via the Internet, rather than
the public switched telephone network (PSTN). The basic steps involved in
originating an Internet telephone call are conversion of the analog voice signal to
digital format and compression/translation of the signal into Internet protocol
(IP) packets for transmission over the Internet; the process is reversed at the
Pretty Good Privacy (PGP) was developed during the same period as PEM, in the
early 1990’s. PGP was originally designed for securing Internet mail. PGP shares
most technical features, such as digital signatures and public-key based encryption,
with PEM. Like PEMit uses a proprietary, non-MIME-compatible, message format
. However, later MIME-compatible variations have evolved . PGP’s main
diﬀerence from other proposals is its key management system. It does not use
X.509 Certiﬁcates, but rather a proprietary syntax.
This course was written for trainees wishing to learn to use Microsoft Outlook. It is written for using Microsoft Outlook in the Office 2007 suite of applications. However, it does not include a ‘New Features’ section exclusively about new features in Microsoft Outlook within Office 2007. It is very easy to see a complete list of the new features in Office v2007 in the Help menu on-screen. This courseware cannot and should not compete with the comprehensive coverage of new features detailed by Microsoft within the application’s help files.