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PROTOCOL SOFTWARE AND ETHERNET WIRING:
All wiring methods use identical Ethernet specifications. e.g. they need same message format. They need same CSMA/CD algorithems. They may mix different methods in an Ethernet.
NICs can give all three-connection technologies. The protocol software can't distinguish among wiring methods. The NIC is given in the figure below with three connectors.
Figure
HUBS:
They are needed for extension of connection with multiplexing concept. They are sometimes known Ethernet-in-a-box. It is effectively a very minimized Ethernet with very maximized AUI cables. It can be connected into bigger Ethernet.
Determine the term - Mobility Mobility refers to the types of physical transitions that can be done by a mobile node within an 802.11 environment (no transition, movement from
Advantages of LS over DV algorithm There are a number of advantages to link state protocols especially when compared to the distance vector based routing protocols. The
Q. Illustrate User Agent Services? User Agent (UA) Services - Provide template for user to compose a message - Reads incoming messages - Allows a user to reply to m
Question 1 Discuss the following Switching Mechanisms- Circuit switching Message switching Packet switching Question 2 Discuss the following IEEE standard
Can you describe what a FIREWALL is?
Network Layer and Routing As discussed in previous chapters the physical layer provides connection sand services to the data link layer while the data link layer is
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
What is DNS? DNS is Domain Name System. The major function of this network service is to provide host names to TCP/IP address resolution.
Firewall is a device or a component that restricts access between a protected or an internal network from an external or untrustworthy network .A firewall basically limits unautho
Fragmentation - Wireless environment is very noisy - Corrupt frames must be retransmitted - Large frames must be divided into smaller ones to increase efficiency
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