File organization… deals with physical organization of records of a file for convenience of their storage and retrieval. Section B: Short Questions (20 marks) 1. What is data processing? Data processing is a series of actions on input that converts the input into useful output. In data processing‚ input is data and output is the useful information. In consists of three sub activities: Capturing
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SUBJECT : COMPUTER COMMUNICATION AND NETWORKS Question Bank UNIT I 1. Write about the Evolution of data networks. 2. Explain the various topologies in networking. 3. Explain the ISO – OSI layer model of data communications. 4. Explain the Physical layer functions and various Wired media in detail. 5. Differentiate the connection oriented and connection less data service. 6. Explain the radio wave communications in detail. UNIT II 1. What are the various Local area networks
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always occur on full-duplex Ethernet links. | | | Bit error rate of 1 in 1010 | | | Data received at the destination must be the same as the data sent by the source. | | | No more than one bad frame per 105 bytes of data. | ____________________ depicts routers‚ logical links between routers‚ and high-level routing protocol configuration information. Answer | | The Layer 2 STP domain | | | A data link layer device map | | | The Layer 3 topology of an internetwork | |
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Singapore or Delhi or Bombay? The answer is No. So we own the LAN infrastructure but we generally lease WAN infrastructure from any third party Service Providers or from a Telephone company. WANs generally carry a variety of traffic types such as voice‚ data and video. Imagine in your office there are 25 telephone extensions. So you have 25 telephone instruments placed on each officer’s desk wired and
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professor‚ Faculty of Information Technology Engineering‚ Damascus University‚ Syria Abstract – Data network is the nervous system and the heart of digital information transferring‚ it’s hold all applications information such as data‚ voice and video and due to this issue reliability of the data network is the critical mission to keep our digital life and business running 24 by 7‚ protection the data network in term of availability in the past was relaying on hardware and resources duplication
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Node In communication networks‚ a node (Latin nodus‚ ‘knot’) is a connection point‚ either a redistribution point or a communication endpoint (some terminal equipment). The definition of a node depends on the network and protocol layer referred to. A physical network node is an active electronic device that is attached to a network‚ and is capable of sending‚ receiving‚ or forwarding information over a communications channel Workstation A workstation is a high-end microcomputer designed for technical
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standards‚ but are used in common practice to reduce the power of devices in both WLANs and WPANs. These techniques exist from the application layer all the way down to the physical layer of a traditional networking protocol stack. Techniques specific to a particular type of network are annotated as appropriate. Application Layer At the application layer a number of different techniques can be used to reduce the power consumed by a wireless device. A technique known as load partitioning allows an
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wireless information networks ● Line switching ● DTMF – dual tone multi frequency ● Telephony protocol ● Standards in telecommunication ● Digital telephony networks – PCM ● ISDN – Integrated Services Digital Network ● D channel ● DSS1 layer 3 protocol 5 | 54 Communication Systems History of telephony networks ● Traditional analogous telephony networks – 1848: State Telegraphy System in Prussia (Siemens) – 1851: First trans-sea cable between Dover and Calais – 1858: Transatlantic
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Assignment in Computer Science 1 1. IMAP (Internet Message Access Protocol) -is an application layer that allows an e-mail client to access e-mail on a remote mail server. It supports both on-line & off-line modes of operation. The current version‚ IMAP version 4 revision 1 (IMAP4rev1)‚ is defined by RFC 3501. 2. POP (Post Office Protocol) -is an application layer Internet standard protocol used by local e-mail clients to retrieve e-mail clients to retrieve e-mail from a remote
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Introduction In computer networking and telecommunications‚ Multi Protocol Label Switching (MPLS) is a data-carrying mechanism that belongs to the family of packet-switched networks. When it comes to getting network traffic from point A to point B‚ no single way suits every application. Voice and video applications require minimum delay variation‚ while mission-critical applications require hard guarantees-of-service and rerouting. So far‚ only circuit-switched networks have provided the
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