osi network layer pdf

... 39 Network Layer Protocols and Internet Protocol (IP) Học viện mạng Bách khoa - Website: www.bkacad.com 3 • Define the basic role of the Network Layer in data networks • The protocols of the OSI ... the control communication between the Data Link layer and the Network layer is the establishment of a maximum size for the packet. Network Layer Fields Học viện mạng Bách khoa - Website: ... networks • The protocols of the OSI model Network layer specify addressing and processes that enable Transport layer data to be packaged and transported. The Network layer encapsulation allows its contents...

Ngày tải lên: 22/12/2013, 13:17

... Transport layer, placed into packets by the Network layer, and further encapsulated as frames by the Data Link layer. The purpose of the Physical layer is to create the electrical, optical, ... context to give them meaning to the upper layers of the networking model. This framing method can be provided by the Data Link layer, the Physical layer, or by both. • Signal patterns can indicate: ... as network adapters (NICs), interfaces and connectors, cable materials, and cable designs are all specified in standards associated with the Physical layer. Characteristics & Uses of Network...

Ngày tải lên: 22/12/2013, 13:17

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Ngày tải lên: 21/06/2014, 18:20

... link Network Layer 4-11 Network layer connection and connection-less service ❒ datagram network provides network- layer connectionless service ❒ VC network provides network- layer connection service ❒ analogous ... conventions ICMP protocol •error reporting • router “signaling” Transport layer: TCP, UDP Link layer physical layer Network layer Network Layer 4-41 IP addressing: CIDR CIDR: Classless InterDomain Routing ❍ subnet ... loss) no congestion no congestion yes no Guarantees ? Network Layer 4-31 The Internet Network layer forwarding table Host, router network layer functions: Routing protocols •path selection • RIP,...

Ngày tải lên: 12/09/2012, 15:06

... supposed that 2 IP sub -network share physically the same LAN. The stations on each sub -network then will see circulating all the packets diffused on the physic network. 1 The network layer Addressing ... rental lease) 7 - Engineers network link: 2B-14-62-91-C9-B1 - Engineers network link towards the external router: 2B-14-62-3F-39-21 - Commercial network link: 1C-96-AA-F4-C2-91 - Commercial network link towards ... 194.12.230.140. 1. Propose a mask of sub -network for the network of company. 194.12.230.0 is a Class C address, the last byte must be used to encode the numbers of sub -network and the numbers of hosts...

Ngày tải lên: 17/09/2012, 09:13

... Preliminary Distribution of Services Across a Network Topology In this activity, you will create a preliminary plan for distributing services across a network topology. Objectives After completing ... activity, you will be able to: ! Create a service topology by distributing services across the network topology. Before You Begin This activity includes both small group tasks and class ... complete this activity, you will need: ! The Ferguson and Bardell, Inc. case study. ! The future network topology provided. ! The business object model created in activities 5.2, 5.3, and 5.4....

Ngày tải lên: 10/12/2013, 16:16

... efficient network possible is essential. For most operators, new network technologies hold the promise of improving service delivery and reducing costs. Deploying new technologies and massive network ... require an in-depth, hands-on understanding of simple to complex network environments. Planning Services • Program and Project Management • Network and Inventory Audit • Engineering Deployment Services • Program ... Professional Services offers comprehensive solutions for network operators delivering voice, video and data services over wireless, wireline and cable networks. Learn more at www.adc.com/professionalservices ...

Ngày tải lên: 10/12/2013, 18:15

... intact. Step 7: Network Scripts You can also modify the IP configuration script files manually using a text editor such as vi. In Red Hat Linux, the relevant file is: /etc/sysconfig /network- scripts/ifcfg-eth0 ... reply from another host means that your IP configuration is working and that you are “live” on the network. Step 5: The router command In order for the server to communicate with TCP/IP hosts beyond ... “gateway” was commonly used in the past to refer to a router because a router acts a gateway to other networks. When configuring a host for IP, you may also have to configure its default gateway, which...

Ngày tải lên: 11/12/2013, 15:15

... trừ khi nó đưa mọi người lên đến đỉnh. Những điểm khác đáng đề cập Sách "Why We Recommend Network Marketing" Tại sao anh đề nghị kinh doanh theo mạng? "Có nhiều lợi ích từ nghành...

Ngày tải lên: 13/12/2013, 04:15

... Facade Layer Review ! Describe the differences between the two types of facade layers: the Web services facade layer and the business facade layer. ! Describe the role of the facade layers ... facade layer. The facade layer provides a unified interface to a set of interfaces in the business logic layer and the data access layer (DAL). This module presents the two types of facade layers: ... Module 5: The Facade Layer 1 # ## # Overview ! Introduction to the Facade Layer ! Technologies ! Logical Design of the Facade Layer ! Physical Design of the Facade Layer ! Market Purchasing ! Best...

Ngày tải lên: 21/12/2013, 06:17

... diagram of a multi-layered network, address range, number of hosts in each network and the ranges for each network, create a network scheme that assigns addressing ranges to each network. • Refer ... used in the network • Explain how addresses are assigned to networks by ISPs and within networks by administrators • Học viện mạng Bách khoa - Website: www.bkacad.com 2 • Determine the network portion ... khoa - Website: www.bkacad.com 14 Testing the Network Layer • Use ping to verify that a local host can communicate with a gateway across a local area network Học viện mạng Bách khoa - Website:...

Ngày tải lên: 22/12/2013, 13:17

... numbers – FIN: No more data from sender Transport Layer Role and Services • Major functions of the transport layer and the role it plays in data networks – Tracking the individual communication ... viện mạng Bách khoa - Website: www.bkacad.com 29 Transport Layer Role and Services • Describe the role of segments in the transport layer and the two principle ways segments can be marked for ... Bách khoa - Website: www.bkacad.com 25 Transport Layer Role and Services Học viện mạng Bách khoa - Website: www.bkacad.com 9 • At the Transport layer the three basic operations of reliability...

Ngày tải lên: 22/12/2013, 13:17

Ngày tải lên: 22/12/2013, 21:16

... Presentation Layer ! !! ! Application Presentation Layer " Purpose of the Presentation Layer " Duality of the Presentation Layer " Benefits of Presentation Layer Duality " Inputs ... application’s presentation layer. In this module, you will learn about designing the presentation layer of an application. You will also learn about the two pieces of the presentation layer — the user ... presentation layer of an application, what is consists of, and how it enables a separation of form from function. Slide Objective To introduce the section. Module 11: Designing the Presentation Layer...

Ngày tải lên: 17/01/2014, 09:20

... Data 10.1.40.0/24 Campus Core Layer 3 Layer 3 VLAN 220 Guest 172.16.1.0/24 VLAN 120 Data 10.1.120.0/24 VLAN 20 Data 10.1.20.0/24 Distribution Layer Access Layer 7 Network Virtualization Network Admission ... 10 Network Admission Control—Option B 11 Access Control 11 14 Network Virtualization Network Admission Control Deployment Guide OL-13636-01 Network Virtualization Deployment Scenarios 3 Network ... 5 Network Virtualization Network Admission Control Deployment Guide OL-13636-01 End-to-End Network Virtualization Solution because an attacker could disconnect the device and gain network...

Ngày tải lên: 24/01/2014, 10:20