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vi khoản vay này có hạn mức tối đa là 100 000 triệu vnd 31 12 2012 100 000 triệu vnd khoản vay này được đảm bảo bằng hàng tồn kho

ip network design guide

ip network design guide

Kĩ thuật Viễn thông

... usually connected using the short wavelength ( 1000 BaseSx) or the long wavelength ( 1000 BaseLx) fiber optic cables, although the standard for the UTP ( 1000 BaseT) is available now The distance limitation ... working environments Table Comparing LAN Technologies Ethernet FDDI Topology Bus Ring Dual Rings Access Method CSMA/CD Token Passing Token Passing Speed (in Mbps) 10 /100/ 1000 1/4/16 /100 100 Broadcast/NonBroadcast ... Service/Type of Service (QoS/ToS) Quality of Service (QoS) and Type of Service (ToS) arise simply for one reason: some users’ data is more "important" then others And there is a need to provide...
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TCP/IP Overview

TCP/IP Overview

Quản trị mạng

... technology NetPro Discussion Forums − Featured Conversations for RP Service Providers: MPLS Virtual Private Networks: Services Virtual Private Networks: Security Related Information • Troubleshooting ... applications such as video Video teleconferencing, for example, requires the ability to send video information to multiple teleconference sites If one IP multicast datagram containing video information ... is available from virtually every computer vendor Cisco − TCP/IP Overview TCP/IP Technology This section describes technical aspects of TCP, IP, related protocols, and the environments in which...
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Tài liệu TCP/IP Overview docx

Tài liệu TCP/IP Overview docx

Quản trị mạng

... technology NetPro Discussion Forums − Featured Conversations for RP Service Providers: MPLS Virtual Private Networks: Services Virtual Private Networks: Security Related Information • Troubleshooting ... applications such as video Video teleconferencing, for example, requires the ability to send video information to multiple teleconference sites If one IP multicast datagram containing video information ... is available from virtually every computer vendor Cisco − TCP/IP Overview TCP/IP Technology This section describes technical aspects of TCP, IP, related protocols, and the environments in which...
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Tài liệu TCP/IP Tutorial and Technical Overview ppt

Tài liệu TCP/IP Tutorial and Technical Overview ppt

Quản trị mạng

... communicate with those above and below via concise interfaces In this regard, a layer provides a service for the layer directly above it and makes use of services provided by the layer directly below ... 402 10.5.1 Last mile connectivity in broadband services 402 viii TCP/IP Tutorial and Technical Overview 10.5.2 Hotspots ... messages 439 12. 1.11 A simple scenario 445 12. 1 .12 Extended scenario 449 12. 1.13 Transport ...
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Tài liệu TCP/IP Overview ppt

Tài liệu TCP/IP Overview ppt

Quản trị mạng

... technology NetPro Discussion Forums − Featured Conversations for RP Service Providers: MPLS Virtual Private Networks: Services Virtual Private Networks: Security Related Information • Troubleshooting ... applications such as video Video teleconferencing, for example, requires the ability to send video information to multiple teleconference sites If one IP multicast datagram containing video information ... is available from virtually every computer vendor Cisco − TCP/IP Overview TCP/IP Technology This section describes technical aspects of TCP, IP, related protocols, and the environments in which...
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Tài liệu TCP/IP Tutorial and Technical Overview docx

Tài liệu TCP/IP Tutorial and Technical Overview docx

Quản trị mạng

... communicate with those above and below via concise interfaces In this regard, a layer provides a service for the layer directly above it and makes use of services provided by the layer directly below ... 402 10.5.1 Last mile connectivity in broadband services 402 viii TCP/IP Tutorial and Technical Overview 10.5.2 Hotspots ... messages 439 12. 1.11 A simple scenario 445 12. 1 .12 Extended scenario 449 12. 1.13 Transport ...
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Tài liệu TCP/IP Tutorial and Technical Overview pdf

Tài liệu TCP/IP Tutorial and Technical Overview pdf

Quản trị mạng

... communicate with those above and below via concise interfaces In this regard, a layer provides a service for the layer directly above it and makes use of services provided by the layer directly below ... 402 10.5.1 Last mile connectivity in broadband services 402 viii TCP/IP Tutorial and Technical Overview 10.5.2 Hotspots ... messages 439 12. 1.11 A simple scenario 445 12. 1 .12 Extended scenario 449 12. 1.13 Transport ...
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TCP/IP Tutorial and Technical Overview phần 1 docx

TCP/IP Tutorial and Technical Overview phần 1 docx

Quản trị mạng

... communicate with those above and below via concise interfaces In this regard, a layer provides a service for the layer directly above it and makes use of services provided by the layer directly below ... 402 10.5.1 Last mile connectivity in broadband services 402 viii TCP/IP Tutorial and Technical Overview 10.5.2 Hotspots ... messages 439 12. 1.11 A simple scenario 445 12. 1 .12 Extended scenario 449 12. 1.13 Transport ...
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TCP/IP Tutorial and Technical Overview phần 2 ppt

TCP/IP Tutorial and Technical Overview phần 2 ppt

Quản trị mạng

... -===================================== 1 1000 000 0 0 1000 00 1000 1 - = 192.32.136.0 (Class C address) 255.255.248.0 (network mask) logical_AND 192.32.136 (IP prefix) 1 1000 000 0 0 1000 00 1000 1111 0000 0000 = 11111111 11111111 ... backbone point of view, to the Class C network range from 192.32.136.0 to 192.32.143.0 as one single network This is illustrated in Figure 3-15 1 1000 000 0 0 1000 00 1000 1000 00000 000 = 11111111 11111111 ... the range consists of all of the IP addresses with the 21-bit prefix 194.32.136, or B ' 1 1000 0 1000 10000 0 1000 1' The maximum number of network numbers assigned contiguously is 64, corresponding to...
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TCP/IP Tutorial and Technical Overview phần 3 ppt

TCP/IP Tutorial and Technical Overview phần 3 ppt

Quản trị mạng

... and Technical Overview Subdividing the network provides the following benefits: Within an area, every router maintains an identical topology database describing the routing devices and links within ... area to provide this connection A virtual link is established between the two ABRs located in area Establishing this virtual link logically extends the backbone area to connect to area A virtual ... the distance vector table In RIP environments, this timeout is at least three minutes after the initial outage During that time, the device continues to provide erroneous information to other...
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TCP/IP Tutorial and Technical Overview phần 4 pptx

TCP/IP Tutorial and Technical Overview phần 4 pptx

Quản trị mạng

... Internet Video conferencing, video broadcast, and audio conferencing software need guaranteed bandwidth to provide video and audio of acceptable quality Integrated Services makes it possible to divide ... Chapter Quality of service 309 Integrated Services, described in 8.2.5, “Integrated Services outlook” on page 308 and Differentiated Services is that DS provides scalable service discrimination ... provider DS domain conforms to the SLA between client and service provider The boundary node of the source domain should also monitor that the provided service conforms to the requested service...
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TCP/IP Tutorial and Technical Overview phần 5 ppt

TCP/IP Tutorial and Technical Overview phần 5 ppt

Quản trị mạng

... service provisioning, and service assurance services IPv6 Operation Service (IOS) supplies on demand configuration, logging, diagnosis, and control services IPv6 Testing Service (ITS) provides ... or policy violations within an enterprise or in government services Voice and Video over IP (which we call V2oIP in IPv6) will replace traditional phone service and provide video services over ... applied 10.5.1 Last mile connectivity in broadband services Last mile connectivity, sometimes called last kilometer connectivity, is a term commonly used by broadband providers (such as DSL or cable)...
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TCP/IP Tutorial and Technical Overview phần 6 pps

TCP/IP Tutorial and Technical Overview phần 6 pps

Quản trị mạng

... major services: Directory service Security service Distributed Time Service Distributed File Service Threads Remote Procedure Call Figure 13-6 DCE architectural components All these services have ... authentication service that validates a user or service The current DCE security service (DCE 1.2.2) is based on Kerberos Version Because the DCE security service must be able to validate users and services, ... with a device type, a device name, or a resource name followed by the DEVICE-TYPE REQUEST command Table 13-5 and Table 13-6 show the device-types Table 13-5 TN3270 device-types: Terminals Terminal...
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TCP/IP Tutorial and Technical Overview phần 7 doc

TCP/IP Tutorial and Technical Overview phần 7 doc

Quản trị mạng

... some other device, such as a printer, to display it Two subtypes are defined initially: – jpeg: The image is in JPEG format, JFIF encoding – gif: GIF format Video The body contains moving image ... receiving system to serious security risks and might impact the integrity of any networks to which the system is connected Obviously, there are many types of data that not fit into any of the previous ... Technical Overview – NOOP: Do nothing The server returns a positive response – RSET: Cancel any previous delete commands – QUIT: Update the mailbox (delete any messages requested previously) and...
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TCP/IP Tutorial and Technical Overview phần 8 ppt

TCP/IP Tutorial and Technical Overview phần 8 ppt

Quản trị mạng

... associated with the service provided and parameters For example: X-service.type (parameter) Where X designates the layer providing the service; for WSP, it is S The service types are the same ... indication Service primitive sample The behavior of service primitives is illustrated using a time sequence chart (Figure 18 -12) Server Client S-request Wireless Network S-indication Figure 18 -12 Non-confirmed ... include: activities: Enumerates what the person is doing class: An identifier that groups similar person elements, devices, or services 714 TCP/IP Tutorial and Technical Overview deviceID: Indicates...
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TCP/IP Tutorial and Technical Overview phần 9 ppsx

TCP/IP Tutorial and Technical Overview phần 9 ppsx

Quản trị mạng

... point In this lobby, receptionists welcome visitors, security guards watch visitors, video cameras record visitor actions, and badge readers authenticate visitors who enter the building Although ... foreign subnets See 7.1, “Mobile IP overview” on page 276 812 TCP/IP Tutorial and Technical Overview 22.4.2 Authentication Header (AH) AH is used to provide integrity and authentication to IP ... set to 128 , 192, or 256 bits, but the official block size is 128 bits Another, block algorithm is the International Data Encryption Algorithm (IDEA) This cipher uses 64-bit blocks and 128 -bit...
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TCP/IP Tutorial and Technical Overview phần 10 ppsx

TCP/IP Tutorial and Technical Overview phần 10 ppsx

Quản trị mạng

... a virtual one as opposed to a physical one User's View of Machine Virtual Machine B Virtual Machine A Virtual Machine Virtual Machine C Physical Machine Figure 24-1 Virtualization Storage virtualization ... provides an authentication service to an authenticator This service determines, from the credentials provided by supplicant, whether the supplicant is authorized to access the services provided ... new virtual server if the instance fails This assists with the time taken to recover the virtual servers and the overall availability of the service provided As shown in Figure 24-1, many virtual...
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Giao thức lõi IP và TCP/IP

Giao thức lõi IP và TCP/IP

Quản trị mạng

... 11111111 0000 0000 00000 000 0000 0000 255.0.0.0 B 11111111 11111111 0000 0000 00000 000 255.255.0.0 C 11111111 11111111 11111111 0000 0000 255.255.255.0 Subnets v Subnet Masks Subnet mask tu bin khỏc vi ... 8-bit c gi l cỏc octet Mi octet c chuyn thnh s thp phõn phm vi t 0-255 v cỏch bi du chm Vớ d Dạng nhị phân 1 1000 000 101 0 1000 0000 0011 000 1 1000 Dạng chấm thập phân 192.168.3 24 a ch IP Giao thc TCP/IP ... nỳt trờn ba mng nh vi mng 139 .12. 0.0 Cỏc router khỏc mng s khụng nhn vic phõn chia mng 139 .12. 0.0 v vỡ vy khụng cn cu hỡnh li Subnets v Subnet Masks - Cỏch router trờn mng 139 .12. 0.0 lm th no ...
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Internet và mô hình tham chiếu TCP/IP

Internet và mô hình tham chiếu TCP/IP

Quản trị mạng

... danh 126 mạng với tối đa 16 triệu host / mạng Lớp A đợc dùng cho mạng số trạm cực lớn - Lớp B: định danh 16384 mạng với tối đa 65534 host / mạng - Lớp C: định danh triệu mạng với tối đa 254 ... thể hệ số mặt cần lu ý chiến lợc an toàn hệ thống là: a Quyền hạn tối thiểu (Last Privilege) Theo chiến lợc đối tợng quyền hạn định thông tin tài nguyên mạng Đây chiến lợc tảng b Bảo vệ ... Dù sách bảo mật với quyền truy nhập hợp pháp, vi phạm bảo mật phân bố thông tin nhạy cảm cho ngời không tin cậy Những thành vi n dùng từ khóa IP Spooping công, chép chia xẻ thông tin bảo...
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Tài liệu khái niệm TCP IP

Tài liệu khái niệm TCP IP

Quản trị mạng

... LAN/Internet phải địa TCP độc đáo (unique) Một địa TCP gồm 32 bits, chia làm nhóm gọi Octet (có bits, tức Byte kiện) đuợc vi t dạng: 1 1000 000 01101010 0000 0011 11001 000 Mặc dầu số mà ... bọc nhỏ (packets) kiện hàng Nó nhanh TCP kiểm tra hay sửa lỗi Ngược lại, không bảo đảm vi c giao hàng Network Administrator ta nên làm quen với công cụ chuẩn để làm vi c với TCP/IP như:  ... TCP/IP làm giao thức cho mạng Windows 2000 TCP/IP tập hợp nhiều protocols, mà số Protocols chánh sau đây:      TCP (Transmission Control Protocol): Chuyên vi c nối hosts lại bảo đảm vi c...
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