explain the various types of computer networks with proper examples

Tài liệu The OSI Model: Understanding the Seven Layers of Computer Networks ppt

... an overview of the network process, whichcan then act as a framework for understanding the details of computer networking.Since the discussion of networking often includes talk of “extra layers”, ... functions of only the transport layer of the OSI model. The TCP/IP process layer, when used with TCP, provides the functions of the OSI model’s presentation andapplication layers (6 and 7). When the ... model.They refer to the non-technical aspects of computer networking that often inter-fere with the smooth design and operation of the network.Layer 8 is usually considered the “office politics”...

the various types of skiing

Danh mục: Tiếng anh

... and the proper length depends on the height of the person. To determine the size needed, the person should hold his hands abovehis head and choose the ski that most closely approximates the ... 1997ClassificationThe Various Types of Skiing Every four years in the Winter Olympics, we see professional athletes compete in many areasranging from downhill skiing to high-speed bobsledding. We see the professionals ... non-professionalscan get into them. In this essay I will classify the various types of skiinginto three categories and inform you about each. The first type of skiing that I will discuss is...

Tài liệu Báo cáo khoa học: Hypoxia reduces the expression of heme oxygenase-2 in various types of human cell lines A possible strategy for the maintenance of intracellular heme level pdf

Danh mục: Báo cáo khoa học

... degrada-tion in the population of hemoglobin-positive cells.To the best of our knowledge, there has been noreport on the promoter function of the human HO-2Fig. 7. Characterization of the human ... degradation of the HO-2mRNA.Functional analysis of the HO-1 and HO-2 genepromoters under hypoxiaTo address the question of whether hypoxia inﬂuences the promoter activity of the human HO-1 ... analyzed the promoter function of the 1.5 kb 5Â-anking region of the HO-2 gene in the present study.YN-1 cells were transfected with each construct of the HO-1 and HO-2 gene promoters (Fig. 7B). The...

Báo cáo Y học: Subsite mapping of the binding region of a-amylases with a computer program ppt

Danh mục: Báo cáo khoa học

... were calculated accordingto the data of Table 1. The arrow indicates the location of hydrolysis. The reducing end of maltooligomers situated at the right hand of the subsite map. Negative energy ... acids within the subsites and determined the binding energies of eachsubsite-substrate monomer unit. The method of subsitemapping originates from the early 1970s. Quantitativetheories of the ... 1;where DGi+1is the subsite binding energy of the subsite i+1,DGXis the subsite binding energy of the subsite x, andPiand Pi+1are the bond cleavage frequencies of the productwhich...

Tài liệu Designing for Profitability in the Physical Layer of Wireless Networks docx

Danh mục: Phần cứng

... precisely these relatively inexpensive components of the network that can have long-term, positive impact on the reliability and profitability of the network.Bend Radius Protection The must-have of ... connectivity for the physical layer, the Network Planning organization not only meets the requirements of its internal customer – Operations – but also contributes to the profitability of the company ... coverage areas, increasing the number of cell sites as well as the number of copper and fiber cables in the network. The constant change of reconfigurations and maintenance in the network is conducted...

A study in the growth mechanism of silicon nanowires with or without metal catalyst

Danh mục: Vật lý

... reserved.doi:10.1016/j.matlet.2007.06.056 with the catalyst. This results in formation of only a few of SiNWs. The reaction temperature is usually decided with the consideration of the catalyst type. According to the binary ... oxidized with an oxide shell of 1–3nmaccording to the Eq. (2) (Fig. 3A).3.2. Sulfide-assisted growth of SiNWsIf the growth with a metal catalyst can cause contamination, the synthesis without ... SiOxxb2ị2ị(3)Si is proffered by the decomposition of the precursor of SiH4(Eq. (1)). When dropping Si atoms come to contact with the metalparticle located on the substrate (Fig. 2B a),...

Báo cáo khoa học: The speciﬁcity of alcohol dehydrogenase with cis-retinoids Activity with 11-cis-retinol and localization in retina docx

Danh mục: Báo cáo khoa học

... suggestingthat the distinct location of the substrate in the bindingpocket of ADH4 is the reason for the low activity observed with this retinal isomer. The interaction of 11-cis-retinal with ADH1B1 ... distances (in A˚) from the oxygen atom of the retinoid functional group to the catalyticZn and to the C4 of the coenzyme.Ó FEBS 2004 Specificity of alcohol dehydrogenase with cis-retinoids (Eur. ... in the ADH4 M141L mutant. The middle region of the substrate-binding pocket (namely position 141) istherefore essential to define the higher specificity of ADH4for the oxidation direction, in the...

the cissp prep guide - mastering the ten domains of computer security

Danh mục: An ninh - Bảo mật

... hosts. At the bottom of the TCP/IP model, the Network Access Layer monitors the data exchange between the host and the network. The equivalent of the Data Link and Physical layers of the OSI ... of the TGS server. Thus, neither the client nor any other entity except the TGS server can read the contents of the TGT because Ktgs is known only to the TGS server. The TGT is comprised of ... Protocol (TCP/IP) is the common name for the suite of protocols that was developed by the Department of Defense (DoD) in the 1970s to support the construction of the Internet. The Internet is based...

the international handbook of computer security

Danh mục: An ninh - Bảo mật

... management should be aware of the varying risks of computer information loss or modification. They should be part of the design and implementation of the security policy, with the security administrator ... and the user must be close to the camera. The price of the active iris scan system is several thousand dollars, including the camera and the software necessary to run the application on the ... manage computer assets in large organizations. The CompuTrace Monitoring Center provides up-to -the- minute listings of all computers and their locations. It's easy to determine whether the computer...

The vegetation types of Texas, including cropland ppt

Danh mục: Khoa học xã hội

...

faraday michael - on the various forces of nature

Danh mục: Điện - Điện tử

... apiece of glass(forwhatwas true of the flintand the bar of ironistrue of the piece of glass,and istrue of everyothersolidtheyare all heldtogetherin the lumpby the attractionbetweentheirparts),andI ... wellas the matter of the Lecturer.May the readers of theseLecturesderiveone-tenth of the pleasureandinstructionfromtheirperusalwhichtheygaveto those who had the happiness of hearingthem!W.CROOKESặTHERFORCE ... handbeforeus,andIthentakeapiece of threadandanivoryball,andhangthatupon the awl then the centre of gravity of both the pasteboardand the ballandstringareasnear astheycangetto the centre of the earth;thatistosay,the...

Báo cáo hóa học: " Research Article Spatial Capacity of UWB Networks with Space-Time Focusing Transmission" pot

Danh mục: Hóa học - Dầu khí

... Nsincreases the collision probability. Due to the power of Nsin the expression of the outage probability shown in (27), the bias of the Cauchy bound is ampliﬁed. Moreover, in this scenario, the L´evy ... probabilitydepends on the number of interference users. When the interference from other users collides with the focused peaksignal and the aggregate interference power exceeds the tolerance of the intended ... if there are Nuinterference users in total, then the number of users thatoccupy the same time slot with the desired user is a r andomvariable. The probability that n users collide with the...