NETWARE

5.X

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By dharmistha   prakashbhai  in Networking  on 9/18/2015 1:47:31 AM   Read more...

 Q-Explain light waves communication?

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By vishal   Patel  in Networking  on 9/19/2015 2:17:19 AM   Read more...

 Q - Explain radio transmission?

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By vishal   Patel  in Networking  on 9/19/2015 2:25:08 AM   Read more...

Q - Explain infrared communication?

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By vishal   Patel  in Networking  on 9/19/2015 2:27:33 AM   Read more...

Q.Write a note on fiber optics cable with its advantages and disadvantages.

Ans:Fiber optics cable:-

Fiber optics cable is a network cable that contains strands of glass fibers inside an insulated casing.These cables are designed for long distance and very high bandwidth network communications.

->   Fiber optics cables carry communication signals using pulses of light.While it''s expensive,these cables are increasingly be...............

Explain features of Public key Cryptography.

In combination, signature and encryption can be used to provide three features that customers demand, particularly for business to business E-commerce,

[1].Privacy:-

            Properly Encrypted data can’t be read by anyone except the intended recipients.  Because public key can be posted freely, complete strangers can communicate privat...............

Que :- INSTALLING AND CONFIGURING NETWORK CARDS.

Or

Que:-Explain the procedure for installing and configuring network adapter.

•  Installing Network Cards :

«  If you’re removing another card to insert the new one, follow these steps:

[1]. Makes sure that the card is disconnected from any outside cables.

[2]. Unscrew the small screws attaching the card to the PC case and lay them aside.

[3]. Pull gently on the card, using both hands to wiggle it back and forth slightly to dise...............

Que:  Explain network protocol?

Protocols are the agreed-upon ways that computers exchange information. Networks are full of protocols. A computer needs to know exactly how message will arrive from the network so it can make sure that message gets to the right place. It needs to know how the network expects the message to be formatted (for instance, which part of the message is the data and which part of the message identifies the recipient) so the network can convey the data to its destination. As a comparison, con...............

Secret key cryptography

In a secret key system, two people who want to communicate use a single shared key that must be kept secret. The same key is used to encrypt

and decrypt data, so if a user loses the secret key or if it’s stolen, the data it encrypts becomes vulnerable secret key systems

tend to be fast and flexible, but their dependence on a single key makes them better suited for applications where you can

change the ...............

Public key cryptography

Instead of the single secret key used in a secret key system, public key systems use two keys, combined into a single key pair:

• A public key, which is designed to be spread freely around.
• A private key (also called a secret key), which must be held only by its owner and should never be publicly disclosed.

These keys complement each other, for example, if you encrypt something with your public k...............

Digital Certificate

                Digital Certificate
    Adigital certificate contains the public key and set of attributes like key holder.Name and email address this attribute this attribute specify something about the holder and there identify what they are allowed to do with the certificate an so on. The attribute and public key are bound t...............

Explain Types Of Threats.

                Types  Of  Threats

1..Spoofing:

 Any internet connected device necessary send IP data gram into network such internet data packets carry the
 senders IP address as well application layer data .If  t...............

----:fullforms:----

ICMP : Internet Control Massage Protocol.

 ARP  : Address Resolution Protocol.

 RARP : Reverse Address Resolution Protocol.

 DHCP : Dynamic Host Configuration Protocol.

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By urvashi   thakor  in Networking  on 9/23/2015 2:03:18 AM   Read more...

 Explain IEEE 802.4 Standard in Detail ?

In a effort to design a standard less prone to collisons then the 802.3,thr IEEE 802.4 sub committee designed a combination bus/ring topology that transmitted information via a token but would use the bus physical topology.
=>The 802.4 standard is designed around to the obvervation that computers are ...............

                            FEATURES OF TCP

                                                      
1.Reliability:- TCP ensures that any data sent arrives at the destinationas it was sent this means there cannot be any data loss or chang...............

                        Relation between TCP & IP

Each TCP message gets encapsulate in an IP datagram and then the datagram is sent accross the internet.when IP transport the datagram to the final destination it informs the TCP software running on the final destination about it an hands  the datagram over to TCP,IP does not read about the content of the message it does not read them and doesn''t attempt to interpret them in any manner.IP acts like the postal service that simply transfer datagrams between two computers for the TCP.IP as ...............

Explain  Firewall ?

Ans:-

    There is a danger information leaking out or danger information leaking in particular viruses can bridge security destroy
valuable data and waste large amount of administrators time trying to clean up.

    consequently , mechanism are needed to keep good bits in and bad  bi...............