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What is a Datapacket
A packet is a bit of data that is sent for transmission over the digital network with a format.It has data and address.
Define the term Extranet
A controlled private network allowing customers, vendors, suppliers and businesses to gain info about a specific company without granting access to entireorgn e
Identify any two features of a Peer to Peer(P2P) network.
1.Resources are more widely available. 2.Supports file sharing for collaborative work 3.No central server
Identify 2 Characteristics of a PAN
1.It is a smallest type of network. 2.It consits of connected devices in close proximity to the individual using them. 3.It is connected via Bluetooth /wireless
Explain how data is transmitted by Packet switching
A message /data is broken into a number of parts which are sent independently over the optimum route for each packet.The individual parts are reassembled at des
Explain why Protocols are used in Network communication
Protocols are a set of rules so that both sender and receiver are using same formats/methods to enable successful communication without errors.
Outline the purpose of MAR in CPU
The Memory Address Register holds the memory location of data/instructions that need to be accessed(read/write)(fetch/store)
Explain how the use of MAC address can improve security.
The Media access control address identifies a specific device (network card/controller).It prevents unauthorised access by providing extra layer to authenticat
Explain VPN
Virtual Private Network gives privacy online .EX:Business ,organisations ,Govts etc. Data is encrypted and decrypted. It provides extra server for security.
What is VLAN
virtual LAN is a logical group of workstations,servers and network devices that appear to be on same LAN despite their geo distri for security,traffic mgmt.
List the different layers of OSI Model
Application layer,Presentation layer,Session layer,Transport layer,Network layer, Datalink layer and Physical layer
What are the functions of Protocols
1.Data Integrity 2.Manage flow control 3.Prevent deadlock 4.Manage congestion 5.Error checking
List out the 3 types of Guided/ Wired transmission media.
1.Twisted pair (Shielded (STP) and Unshielded (UTP)) 2. Coaxial cables 3. Fiber optics
Explain Packet switching
describes the type of network in which relatively small units of data called packets are routed through a n/w based on the destination address contained in pack
Any 5 methods of Network security
Authentication, Firewalls, Encryption ,Physical security ,WPA/WPA2
What is Wi-Fi
•Wireless Fidelity Used in laptops/mobile devices to connect wirelessly to home network Allows relatively slow to fast data transmissions (depending on the vers
