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What is horizontal and vertical parity
A single error can cause both horizontal and vertical parity checks to be wrong. Two errors can also be easily detected. If they are not in similar rows, row parity will catch them. If they are in same row, column parity will catch them. Three errors might slip by undetected, such as, if some bit is inverted along with its column and row parity bits. Even corner bit will not catch this.
Tunnelling To guarantee privacy for the organization, VPN specifies that each IP datagram destined for private use of the organization, must first be encrypted and then en
Retransmission of packets The disadvantage of thronging away a correctly received packet is that the subsequent retransmission of the packet might be lost or garbled and
• This device creates one big collision domain and one large broadcast domain.
State the uses of groupware With the use of groupware, users can easily do most of the office related management work, which otherwise would be extremely difficult. For instanc
It is possible for a datagram to generate ICMP errors after it has been fragmented. For example, suppose that each of two fragments cannot be delivered. Seemingly, this would mean
The following information was obtained from a host: IP address...............205.133.127.8/24 Default Gateway...... 205.133.127.1 DNS Server.............139.100.110.10
Why do we require class and how many different parts of class exists?
Distribution of DNS 1.By centralized data base The information contained in the domain name space must be stored. A simple design or DNS would have one DNS server that co
TYPES OF WIRES: Cable used for wiring would match the following: The intended speed The distance between computers The amount of noise Anticipated future r
Transmission robustness and security Unless properly designed, a wireless LAN might be interference prone and simply eavesdropped. The design of a wireless LAN must allow relia
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