ccna software

First, the actual application of the network classificationBlock data streams: FTP, TFTP, inventory updateNo direct human interaction requiredBandwidth is important, but not a critical factorInteractive Data Flow: Inventory queries, database

1. Network Segment (segmentation)In order to cope with the increase of the network caused by slow user response and traffic congestion, the large network is divided into a number of small network behavior. You can use devices such as routers,

Network Fundamentals  3. Which layer of the OSI 7-layer network model does the hub work on? DA, Transport layerB, Network layerC, Data link layerD, Physical layer 4. In the following options, the error about the protocol and the default port

Routing Protocol Overview : Through a routing protocol, many routes to the same target network are learned, and metric is placed in the routing table. Metric, the same time, put in the routing table. Through a variety of routing

WAN ( Wide Area Network ) WanThe data link layer, the physical layer, running in the OSI model.The protocols of the data link layer are mainly:HDLC (High-level Data Link control)PPP (Point-to-point Protocol-to-dot protocol)Frame-relay (Frame

Transport Layer: two important agreements TCP and the UDPTcp: Connection-oriented protocol: to establish a connection (three handshake of TCP) before transmitting user data Error checking Packet serialization Reliability

After learning rip, we know some basic routing protocols for routing, and now let's get to know a private protocol for Cisco: EIGRPEIGRP Routing Protocol(also known as Enhanced Internal Gateway Protocol Enhanced Interior Gateway Protocol)It is a

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OSI seven-layer model Application LayerPresentation LayerSession LayerTransport Layer Core LayerNetwork Layer aggregation LayerData Link Layer Access layerPhysical LayerFirst, the physical layer1. Transmission unit: bit bitstream2. Device NIC,

Switch port configurationA LAN switch is an intermediary device that provides interconnection for each segment of a network. Therefore, the physical interface on the switch does not have an IP address. The physical interfaces on the routers are

1. Static route with one jump: -----------------------R1---------------------------- R1 (config) #ip Route 2.2.2.0 255.255.255.0 12.1.1.2 R1 (config) #ip Route 23.1.1.0 255.255.255.0 12.1.1.2 R1 (config) #ip Route 3.3.3.0 255.255.255.0 12.1.1.2

Concept: 1. Neighbor table: The address of the direct-attached router and the interface to which it is connected 2. Topology table: A. Routing Status: P (passive) a (activity) B. Feasible distance (FD): Minimum metric to destination (metric) C.

Looking at the future of software and software engineering from the history of human development Abstract:Through the history of human history over thousands of years, we can see a clear evolution on the timeline. This context not only tells about the past development of mankind, but also points out the trend of human destiny. Software and

Several misunderstandings about software testing As the market continues to improve the quality of software, software testing has been paid more and more attention. However, because the process of software projects in China is not standardized in general, this has led to the emphasis on coding and testing, there

How to uninstall software under Mac OS x There are many ways to install MAC OS x software, and the software offload is very different. Removing software in Mac OS X is often not as simple as pulling the software into the trash. Typically, specific problems are analyze

Software maintenance The term "software maintenance" is used to describe the software engineering activities that occur following delivery of a software product to the customer. the maintenance phase of the software life cycle is the time period in which a

software compatibility and software compatibility testing (1) What is software compatibility A lot of things can coexist peacefully, chocolate and peanuts are a good example if you like to eat peanut candy. However, we also know that water and oil are incompatible. As we focus on creating a complex, large application, developers must work very hard to make the

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Part I: Overview of software EngineeringA software = program + Engineering in seeing this formula, I think everyone is also very easy to understand this, a software implementation is inseparable from the program support, the program is Software "Flesh and Blood", then only the program can it? The answer is no, because

What is green software and How to Make It (reprinted )-- The author wrote a strong article about green software. Definition and classification of green software After installing the operating system, we usually need to install some commonly used software. However, as the number of commonly used