1. How does wireless networking prevent packet collisions? 2. A host computer of
ID: 3865758 • Letter: 1
Question
1. How does wireless networking prevent packet collisions?
2. A host computer often stores the MAC addresses of other hosts on the same network locally. What is the name of that local store?
3. Type of DNS server that will automatically refer you to another server if it cannot answer a query.
4. Version 4 of the Network File System went to TCP instead of UDP. Explain the difference between these 2 protocols.
5. What are the 3 parts of an Email message and what are the purposes of each one?
6. When a client needs to learn the IP address associated with a host name it uses the DNS system to get an answer. Explain (in detail) the process of retrieving an unknown IP address.
Explanation / Answer
1)
By using CSMA/CA protocol
In this protocol nodes transmit signal only when they sense the channel is idle. So there is no chance of packet collision.
It operates in layer 2 of OSI model.
It avoid collisions using two signals.
By using above signals this algorithm avoid packet collisions and it is used in wireless mediums only.
2)
ARP Table
Address resolution protocol table - it stores the mac addresses of nodes in network to transfer information to the correct node without misleading.
generally these tables flush for every 20 minutes to refresh the ip's changed in the network.
3)
Forwarding DNS servers
these DNS servers automatically refer you to other server it it can't answer your query
properties of these servers are:
4)
Difference between TCP and UDP
TCP:
UDP:
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.