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What else can I help you with?
A switch is a network navigation device that merely retransmits a signal to all other nodes attached to it?
No, that would be a hub or repeater. A switch will only transmit a message to the designated receiver (unless the packet is a broadcast packet).
If you upgrade a 24 port hub that serves one of your organizations workgroups to a 24 port switch for better performance how have you also improved security?
If you have switch from hub to switch, the answer is yes of course. Hub uses broadband connections all the time, when switch creates a virtual channel for each connection. It protects your network from somebody who wants to collect network packages which do not belong to that person. Some router have manageable interface and allow even filtering. Depending on model you are using you benefit more or less but still benefit anyway.
Why do networking specialists say Switch where you can route where you must?
Yes, the main reason is switch is an inteligent device for routing IP Packet. It substitute conventional hub which is not smart because it broadcast IP packet to all its port. This impact to network performance because IP packet flooding network. While switch have internal routing table that can help switch to forwarding to a exact port where the destination host is connected to its switch port.
How does a packet from one LAN node find its way to a recipient on the same LAN?
If you have a hub then the packet is sent to every computer, and only the right computer will read it. The rest just quietly ignore it. Obviously this poses a major security risk. If its a switch then the switch has a table which tells it which address matches which port. So when the packet arrives, the switch checks the destination address then it goes to the table and gets the corresponding port and then sends the packet accordingly. A router works similarly enough. Except a router can do alot more complex operations.
What is difference betwee hub andswitch?
A hub is just a dumb repeater that splits whatever signal comes in via some port straight out all of the other ports. A switch is a bit more intelligent in that it checks the destination hardware address in the packet which comes in and forwards that packet back out only the port where the target network interface is actually located.
Is it possible to link a cross-over connection to a switch or hub?
A crossover cable is used to connect a Hub or Switch to another Hub or Switch - or a PC to another PC.
Is star topology the faster of all topology?
No, because there is a hub between star topology and every station connect to that central hub. hub cause broadcast and congession since packet loss is more likely to occur. I suggest that mesh topology is more faster as there is a dedicated link to each node.
Where is a MAC address stored in a Switch?
Switches store the MAC addresses in an internal database called MAC Address Table. The entries in that table can be addresses learned by the switch or that can be entered manually by the switch administrator. This table is analogy to a router's routing table, only a switch operates at layer 2 whereas the router operate at Layer 3.
What is the differences between hub and switch in networks?
switches does not have the database...much smarter than a hub.
When refering to a hub or switch what is a port?
Port in hub/switch refers to the interface where you connect your computers.
What is a network hub switch?
it is a switch in hubs
Can hub be intelegance?
Hubs (As in the networking device) are considered to be a "dumb" device so to speak. When a packet is sent to a computer connected to a hub with other computers attached, it will forward the packet to EVERY computer connected to it. The issues involved with this is data collisions, if a computer is trying to send out data to something on a different network, while the hub is trying to send a packet there will be a collision. These have the tendency to slow the network down and the data that collided is lost. Since there is so much traffic being sent a hub will just keep forwarding what it is sent to every computer attached. This can drain network resources, which intern slows down the network for others. So it's better to use a switch in most cases, as they avoid many of the issues hubs face.
