• Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    What operational mode, the Admin will have to use to enter management commands on the Switch?

    Global configuration

  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    What access mode of command line interface (CLI) of a switch will be more suitable for the Admin of Branch-2 to configure the initial settings of the Switch?

    CLI Command Modes
    This section describes the CLI command mode structure. Command modes support specific Cisco IOS commands. For example, the interface interface-id command only works when entered in global configuration mode.
    These are the main command modes for the switch:
    • User EXEC
    • Privileged EXEC
    • Global configuration
    • Interface configuration
    • Config-vlan
    • VLAN configuration
    • Line configuration

    Command Modes Summary

    Command Mode Access Method Prompt Exit or Access Next Mode
    User EXEC This is the first level of access. (For the switch) Change terminal settings, perform basic tasks, and list system information. Switch> Enter the logout command. To enter privileged EXEC mode, enter the enable command.
    Privileged EXEC From user EXEC mode, enter the enable command. Switch# To exit to user EXEC mode, enter the disable command. To enter global configuration mode, enter the configure command.
    Global configuration From privileged EXEC mode, enter the configure command. Switch(config)# To exit to privileged EXEC mode, enter the exit or end command, or press Ctrl-Z. To enter interface configuration mode, enter the interface configuration command.
    Interface configuration From global configuration mode, specify an interface by entering the interface command followed by an interface identification. Switch(config-if)# To exit to privileged EXEC mode, enter the end command, or press Ctrl-Z. To exit to global configuration mode, enter the exit command.
    Config-vlan In global configuration mode, enter the vlan vlan-id command. Switch(config-vlan)# To exit to global configuration mode, enter the exit command. To return to privileged EXEC mode, enter the end command, or press Ctrl-Z.
    VLAN configuration From privileged EXEC mode, enter the vlan database command. Switch(vlan)# To exit to privileged EXEC mode, enter the exit command.
    Line configuration From global configuration mode, specify a line by entering the line command. Switch(config-line)# To exit to global configuration mode, enter the exit command. To return to privileged EXEC mode, enter the end command, or press Ctrl-Z.
  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    Which specific layer of OSI model will make the Routers of two branches to communicate with each other?

    3ee175a7-c80b-430b-afa7-49a5d25b5a72-image.png

    Each layer of the OSI Model (shown above) provides specific services that contribute to overall network functioning.

    • The Physical Layer defines the electrical and mechanical aspects of interfacing to a physical medium for transmitting data, as well as setup, maintenance, and disconnection of physical links. When implemented, this layer includes the software driver for each communications device, plus the hardware itself—interface devices, modems, and communications lines.
    • The Data-Link Layer establishes an error-free communication path between network nodes over the physical channel, frames messages for transmission, checks the integrity of received messages, manages access to and use of the channel, and ensures the sequence of transmitted data.
    • The Network-Control Layer addresses messages, sets up the path between communicating nodes, routes messages across intervening nodes to their destinations, and controls the flow of messages between nodes.
    • The Transport Layer provides end-to-end control of a communication session once the path has been established, which enables the reliable and sequential exchange of data independent of both the systems that are communicating and their locations in the network.
    • The Session Layer establishes and controls system-dependent aspects of communication sessions provided by the Transport Layer and the logical functions running under the OS in a participating node.
    • The Presentation Layer translates and converts transmitted encoded data into formats that can be understood and manipulated by users.
    • The Application/User Layer supports user and application tasks and overall system management, including resource-sharing, file transfers, remote file servers, and database and network management.
  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    How many end devices exist in overall network of the software house?

    The network devices that people are most familiar with are called end devices, or hosts. These devices form the interface between users and the underlying communication network.

    Some examples of end devices are

    • Computers (work stations, laptops, file servers, web servers)
    • Network printers
    • VoIP phones
    • TelePresence endpoints
    • Security cameras
    • Mobile handheld devices (such as smartphones, tablets, PDAs, and wireless debit/credit card readers and barcode scanners)
  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    How many intermediary devices exist in the Branch-2 premises?

    Intermediary devices interconnect end devices. These devices provide connectivity and work behind the scenes to ensure that data flows across the network. Intermediary devices connect the individual hosts to the network and can connect multiple individual networks to form an internetwork.

    Examples of intermediary network devices are:

    • switches and wireless access points (network access)
    • routers (internetworking)
    • firewalls (security).

    The management of data as it flows through the network is also a role of the intermediary device. These devices use the destination host address, in conjunction with information about the network interconnections, to determine the path that messages should take through the network.

    Processes running on the intermediary network devices perform these functions:

    • regenerate and retransmit data signals
    • maintain information about what pathways exist through the network and internetwork
    • notify other devices of errors and communication failures
    • direct data along alternate pathways when there is a link failure
    • classify and direct messages according to quality ofsService (QoS) priorities
    • permit or deny the flow of data, based on security settings.
  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    What is the type of overall computer network of software house with respect to geographical area?

    A local area network (LAN) is a network that connects computers and devices in a limited geographical area such as a home, school, office building, or closely positioned group of buildings. Each computer or device on the network is a node. Wired LANs are most likely based on Ethernet technology.

  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    What is the type of computer network in Branch-2 with respect to geographical area?

    Star Topology

  • Cyberian's Gold

    @zaasmi said in CS407 Assignment 1 Solution and Discussion:

    Topology

    Network topology is the arrangement of the elements of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial fieldbusses and computer networks.

  • Cyberian's Gold

    @zaasmi said in CS407 Assignment 1 Solution and Discussion:

    What is the type of computer network in Branch-1 with respect to geographical area?

    LAN ( local area network) is a group of computer and peripheral devices which are connected in a limited area. WAN (Wide Area Network) is another important computer network that which is spread across a large geographical area.

    It’s Star Topology

  • Cyberian's Gold

    @moaaz said in CS407 Assignment 1 Solution and Discussion:

    What is the type of computer network in Branch-1 with respect to geographical area?

    LAN ( local area network) is a group of computer and peripheral devices which are connected in a limited area. WAN (Wide Area Network) is another important computer network that which is spread across a large geographical area.

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