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    A school currently has a cabled network but wants to add wireless networking across the whole campus.

    Question
    SLPaper 1

    A school currently has a cabled network but wants to add wireless networking across the whole campus.

    There are concerns that unauthorized people could access the data on the wireless network.

    The school has decided to implement a virtual private network (VPN) to provide access to its network.

    1.

    Describe two hardware components the school will need to implement the wireless network.

    [4]
    Verified
    Solution

    Award 4max4 max4max

    (Wireless) router;
    A central hub for all the computers to connect to;
    Enables wireless network packet forwarding and routing;

    Wireless Network Interface Card (NIC);
    To allow the computer to ‘talk to’ the (wireless) router;

    Wireless access points;
    allow Wi-Fi devices to connect to a wired network;

    Wireless repeaters;
    To expand the reach of the network;

    Mark as 2 and 2.

    2.

    Identify two advantages to the students of the new wireless network.

    [2]
    Verified
    Solution

    Award 2max2 max2max
    The ability to use their own devices at school;
    The ability to access the school network from anywhere in the school;
    No cables laid, so reduces the risk of tripping over cables;
    Numbers of connections are not limited to cable ports, so greater numbers of students can connect at any given time;

    3.

    Outline two methods the school could employ to prevent network data from being accessed over their wireless system.

    [4]
    Verified
    Solution

    Award 4max4 max4max

    Use of encryption;
    So that data cannot be understood if it is intercepted;

    Use of user authentication/usernames and passwords;
    To prevent unauthorized access to the system;

    Setting up a file of accepted MAC addresses;
    To only allow access to the network by registered mobile devices;

    Hide network ID;
    So that the wireless network is not publicly seen;

    Mark as 2 and 2.

    4.

    Identify two technologies the school would require to provide a VPN.

    [2]
    Verified
    Solution

    Award 2max2 max2max
    Client VPN software (to make a secure remote connection);
    VPN-aware routers and firewalls (to permit VPN traffic to pass);
    VPN appliance/server (to handle incoming VPN traffic);
    Encryption protocol IPSec or SSL;

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    5.

    Explain one benefit to the staff of using a VPN to remotely access the school network.

    [3]
    Verified
    Solution

    Award 3max3 max3max
    Enhanced security of data;
    for example, using encryption;
    This prevents unauthorised access;

    Remote access to data and resources (from any location);
    Normal access of materials on the network;
    as though the user was using the network on site;

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