Computer networks -- 2007-2008 -- info.uvt.ro/Course 9
Quick links:
- front;
- courses 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13;
- laboratories agenda, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, evaluation, tools, repository.
OSI upper layers
editSession layer
edit- Computer networks -- 2007-2008 -- info.uvt.ro/Course 2#Session layer;
- Computer networks -- 2007-2008 -- info.uvt.ro/Course 3#Session layer;
- wikipedia:Session layer;
Presentation Layer
edit- Computer networks -- 2007-2008 -- info.uvt.ro/Course 2#Presentation layer;
- Computer networks -- 2007-2008 -- info.uvt.ro/Course 3#Presentation layer;
- wikipedia:Presentation layer;
Application Layer
editDNS
edit- DNS -- Domain Name System;
- purpose:
- decouple machine names from machine addresses;
- provide textual addresses for network resources;
- characteristics:
- hierarchical naming scheme;
- each domain is partitioned in sub-domains;
- naming follows organizational boundaries, not physical networks;
- 200 top-level domains (generic and countries);
- concepts:
- resource records:
- domain name;
- time to live;
- class (IN);
- type (A, CNAME, MX);
- value;
- registrars;
- name servers;
- resolvers;
- recursive queries;
- resource records:
- links:
- email structure:
- header;
- body;
- simple email example:
From: John Doe <jdoe@machine.example> To: Mary Smith <mary@example.net> Subject: Saying Hello Date: Fri, 21 Nov 1997 09:55:06 -0600 Message-ID: <1234@local.machine.example> This is a message just to say hello. So, "Hello".
- (real) email example:
Return-Path: ccraciun@cci.uvt.ro Received: from hermes.info.uvt.ro (LHLO hermes.info.uvt.ro) (194.102.62.58) by hermes.info.uvt.ro with LMTP; Mon, 21 Apr 2008 14:42:12 +0300 (EEST) Received: from localhost (localhost.localdomain [127.0.0.1]) by hermes.info.uvt.ro (Postfix) with ESMTP id E0C16DE0408 for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 14:42:12 +0300 (EEST) X-Virus-Scanned: amavisd-new at X-Spam-Flag: NO X-Spam-Score: -2.599 X-Spam-Level: X-Spam-Status: No, score=-2.599 tagged_above=-10 required=6.6 tests=[BAYES_00=-2.599] Received: from hermes.info.uvt.ro ([127.0.0.1]) by localhost (hermes.info.uvt.ro [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rLfp9GrKP-MW for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 14:42:12 +0300 (EEST) Received: from hercules.uvt.ro (mail.uvt.ro [85.120.204.100]) by hermes.info.uvt.ro (Postfix) with SMTP id 07335DE03DF for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 14:42:11 +0300 (EEST) Received: from localhost (localhost.localdomain [127.0.0.1]) by hercules.uvt.ro (Postfix) with ESMTP id 99EBF192D9DA for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 16:20:45 +0300 (EEST) X-Virus-Scanned: amavisd-new at Received: from hercules.uvt.ro ([127.0.0.1]) by localhost (hercules.uvt.ro [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3iM-RcdAq8m5 for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 16:20:45 +0300 (EEST) Received: from hercules.uvt.ro (hercules.uvt.ro [85.120.204.100]) by hercules.uvt.ro (Postfix) with ESMTP id 3DF1B192D9D9 for <ccraciun@info.uvt.ro>; Mon, 21 Apr 2008 16:20:45 +0300 (EEST) Date: Mon, 21 Apr 2008 16:20:45 +0300 (EEST) From: Craciun Ciprian Dorin <ccraciun@cci.uvt.ro> To: ccraciun@info.uvt.ro Message-ID: <1385273071.10131208784045168.JavaMail.root@hercules.uvt.ro> Subject: Test e-mail MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [194.102.62.253] This is a simple test e-mail.
- actors:
- UA -- user agents;
- MTA -- mail transfer agents;
- protocols and standards:
- SMTP;
- POP3;
- IMAP;
- MIME;
- links:
HTTP
edit- please consult: Computer networks -- 2007-2008 -- info.uvt.ro/Laboratory 4;
Other protocols
editCase study -- AMQP
edit- links:
- specification: