_____3. Which of the following would be a standard used at the Data Link layer of the Internet or OSI model? k) IP l) TCP m) Ethernet n) HTTP o) FTP _____4. In which layer of the Internet model would the HTTP standard be used? p) physical q) application r) transport s) network t) data link _____5. The network layer of the Internet model uses the _____________ protocol to route messages though the
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liquid-liquid extraction. Then crude material obtained was then purified by sublimation. The isolated caffeine was subjected to thin layer chromatography (TLC) together with a standard caffeine. The Rf value obtained for both isolated caffeine and standard caffeine was 0.24. Keywords: solid-liquid extraction‚ multiple liquid-liquid extraction‚ sublimation‚ thin layer chromatography‚ percent caffeine Introduction Many organic compounds are obtained from natural sources through isolation. In
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security measures that are associated with each level of the Open Systems Interconnect (OSI). Physical layer This layer is responsible for moving raw bits from one node to another: electrical impulse‚ light or radio signals. This layer represents the physical application security. It includes access control‚ power‚ fire‚ water‚ and backups. Many of the threats to security at the Physical layer cause a Denial of Service (DoS) of the enterprise application‚ making the application unavailable to enterprise
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countries to create standards that apply to multiple countries 5. Which of the following are true about the commonly used version of the TCP/IP model as shown in this chapter? The data link layer sits lower in the model than the transport layer. / The physical layer sits just below the data link layer 6. The TCP/IP model refers to standards other than those the IETF defines in RFC’s. Which of these standards groups is typically the source of external LAN standards? IEEE / ANSI 7. Which
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What are Web Services Web service is any piece of software that makes itself available over the internet and uses a standardized XML messaging system. Because all communication is in XML‚ web services are not tied to any one operating system or programming language--Java can talk with Perl; Windows applications can talk with Unix applications. Here are the benefits of using Web Services Web Services allows you to expose the functionality of your existing code over the network. Once it is
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Genevieve Santos Tina Nunez Jose Lugo Eddie 08/22/2014 Frame Relay Migration to MPLS Frame Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology. Multiprotocol Label Switching (MPLS) is a mechanism in high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses
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mmTASK 1 a) Explain the following types of data communication networks and their applications * Public switched telephone network (PSTN) * Local area networks (LANs) * Metropolitan area networks (MANs) * Wide area networks (WANs) * Packet switched data network (PSDN)‚ * Integrated services digital network (ISDN) Public switched telephone network (PSTN) Public Switched telephone network (PSTN) is the global collection of interconnects originally designed to
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Chapter 1 Answer the following review questions. 1. Which of the following protocols are examples of TCP/IP transport layer protocols? (More than one answer could be correct.) a. Ethernet b. HTTP c. IP d. UDP e. SMTP f. TCP The answers to this question are TCP and UDP. 2. Which of the following protocols are examples of TCP/IP network access layer protocols? a. Ethernet b. HTTP c. IP d. UDP e. SMTP f. TCP g. PPP The answers to this question are Ethernet and PPP. 3. The process
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of serial ports over the L2CAP. SDP: Provides a means for applications to discover which services are available and to determine the characteristics of those available services Provides connection-oriented and connectionless data services to upper layer protocols with protocol multiplexing capability‚ segmentation‚ and reassembly
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COLUMN AND THIN LAYER CHROMATOGRAPHY Mark Paul P. Pastrana‚ Mariah Ericka M. Patawaran‚ Princess Juneire M. Peligro‚ Francisco Q. Pua III‚ Rose Anne L. Quyo and Janille P. Ragpa Group 8 2B Medical Technology Organic Chemistry Laboratory ABSTRACT The main objectives were to separate the colored components of malunggay leaves by means of column chromatography‚ as well as to determine the purity of the components using thin layer chromatography (TLC) and measure the Rf values of the colored
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