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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
Finding Mac address on Mac book pro?
Apple > About this Mac > More Info > Network > Ethernet
It will be displayed below.
Alternatively, you can check it through the terminal with the command:
ifconfig en0 | grep ether
What ports must be open for DCOM over a firewall What is the purpose of Port 135?
The port 135 must be open to accept the incoming remote connection to the Service Control Manager (SCM), which provides RPC-based services for DCOM.
So the purpose of Port 135 is to allow to client to locate a DCOM service.
What is a dns forwarder used for?
A forwarder is a Domain Name System (DNS) server on a network used to forward DNS queries for external DNS names to DNS servers outside of that network. You can also forward queries according to specific domain names using conditional forwarders.
A DNS server on a network is designated as a forwarder by having the other DNS servers in the network forward the queries they cannot resolve locally to that DNS server. By using a forwarder, you can manage name resolution for names outside of your network, such as names on the Internet, and improve the efficiency of name resolution for the computers in your network. For more information about forwarders and conditional forwarders
What is the difference between the Internet and the Web?
The Internet is the global network of computers and servers that connect and share data. The Web (World Wide Web) is a service running on the internet that uses websites and browsers to access and share information.
Can switches be used by administrators to segment their LAN?
Not really - they operate at the Data Link layer using the MAC address and therefore don't really segment a network. There are some managed switches that can do this or by using VLAN configurations, but ordinary switches will not really segment a LAN.
What is the function of the unshielded twisted pair?
Two conductors, twisted together, without creating a short.
Depending on the LAN topology, some LAN segments may be limited to as few as 30 clients total, whereas other topologies can handle 1024 or more on a single LAN. More than that and you would need to go to multiple LANs connected via a router.
How does tftp overcome the limitation of using a connectionless transport layer protocol?
TFTP doesn't really overcome the connectionless transport - it doesn't have to because the idea here is transferring files with speed, not quality. It doesn't matter to the protocol is the information doesn't arrive, or arrive correctly, etc.
Is McAfee is enough for a laptop?
McAfee is probably the worst anti-viruse system out there. If all you want to do is browse the internet and check your email then it's fine. But if you actually use a computer like a smart person then i would recommend AVG and SpyBot search and destroy.
How do you secure folders over home network?
You don't really need to "secure" a folder to send it over the network as the wireless encryption takes care of it for you. You can use a third party folder encryption app or compress the folder and give it a password if you really want to have overkill.
If you're just on a Home network, as in using it in your home, then all you need to do is set the wireless encryption to WPA-2 (it's the highest non commercial encryption) and everything you send to the other computers is encrypted.
Depending on the uniqueness of the password, (length of password, how many numbers, random letters, uppercase letters, etc.) it could take years to decrypt even with a high end "cracker".
What do you need to set up a network for five buildings three floors high with about 1850 users?
Contact an IT solutions company. This is way to big of a job for anyone without extensive knowledge in the field. It will likely require multiple servers, operating systems, lots of wiring, lots of computers, backup solutions, multiple internet connections w/routers, probably some wireless access points, tight security, etc. Depending on the configuration, the hardware alone will easily exceed a million dollars, and labor will likely run $100+ per hour. With that much money being thrown around, contract the initial installation and hire an internal IT department for day-to-day matters and to assist in the set-up. This system will cost a few hundred thousand per year to keep up, too, with the staff for the department.
Unfortunatley, I have to completely agree with the answer the previous user submitted, I wish I had better news for you, buddy
I would suggest mini server rooms in each building, local network cabinets on each floor, each buliding connected to each other by at least two links for redundancy. You would need from the infrastructure point of view, switches, routers, cabling, ports.
From the computer point of view you would need servers and workstations. You would need to consider Backups and replication, patch management and Anti virus, licencing software and firewalls.
ANSWER
Picture the physical layout and all the wiring between.
- Each floor will need to connect all the cubicles.
- Each floor will need to connect to the other floors in the same building.
- Each building will need to connect to the other buildings.
Servers are one detail, but the network to support 1850 users will require several subnets on the local infrastructure LAN. At a minimum, items (1,2,3) will each have its own subnet (and therefore separate routers). A subnet can typically support 253 systems, but usually that will swamp the network and your users will be screaming at the I.T. department. As described by the question, 5 buildings with 3 floors each will required 15 routers and on average each router would have 123 connections which is a reasonable start.
Each router or switch deployed should be a gigabit device while all systems attached should be restrained to 10/100mb connections.
What does duration mean in network connection?
The elapsed times that client and server was communicating to each other.
Who owns or manages the network?
Each company owns its own network.
If you mean the Internet, it doesn't have a single owner; rather, there are agreements between several institutions.
Each company owns its own network.
If you mean the Internet, it doesn't have a single owner; rather, there are agreements between several institutions.
Each company owns its own network.
If you mean the Internet, it doesn't have a single owner; rather, there are agreements between several institutions.
Each company owns its own network.
If you mean the Internet, it doesn't have a single owner; rather, there are agreements between several institutions.
How many host address are there for an address with 21 bits for the network address?
2046
Breakdown:
11111111.11111111.11111000.00000000
/21 - 21 bits in network address represented by ones in binary address above. Leaves 2^11th power host addresses left (the zeros to the right).
Equals 2048 host addresses minus the two reserved addresses = 2046
How does you connect Samsung gts5620 with your PC for net?
First, your question should be like this...
"How do you connect Samsung..."
Second, no answer :)
How many principal network topologies?
1mesh topology
2 star topology
3bus topology
4ring topology
5tree topology
* Ability to handle growing amount of work * Capability of a system to increase total throughput under an increased load when resources are added * A scalable system is that whose performance improves after adding hardware, proportionally to the capacity added * A routing protocol is considered scalable with respect to network size, if the size of the necessary routing table on each node grows as O(log N), where N is the number of nodes in the network.
