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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
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".
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
What does duration mean in network connection?
The elapsed times that client and server was communicating to each other.
How big are the network and host ID fields for a Class A address?
A class A address is one of the IPv4 class-full networks.
There are 3 of these class-full networks in IPv4; class (A, B, and C).
The entire IPv4 address range is 32 bits long. The address range is broken up into 4 x (8 bits) referred to as octets, and then giving the whole 32 bit address range.
The classes are defined as follows…
Class A = reserve the first octet, or 8 bits for network addresses and leave the remaining three for host addresses. Reserving the addresses for the network is also referred to as the network mask. In other words do not assign any address in the reserved, first octet, to a host.
Class A = 11111111.00000000.00000000.00000000 also known as a /8 bits reserved for net
Class B = 11111111.11111111.00000000.00000000 also known as a /16 bits reserved for net
Class C = 11111111.11111111.11111111.00000000 also known as a /24 bits reserved for net
So the answer is; a class A network has an 8 bit field for the network, and a 24 bit field for the host
there are three types of hub which are following: 1. Active Hub. 2. Passive Hub 3. Hybrid Hub
How is blocking related to a crossbar switch?
: Blocking can occur when two switch inputs attempt to access the same intermediate switch channel.
At what layer of the OSI does data become a packet?
Different textbooks may give you different answers to this question. In several I've seen, the "packet" is complete in the data link layer (layer 2) and is known as a 'frame' in the physical layer (layer 1).
Others may indicate a packet is the result of the physical layer (layer 1). In other descriptions the terms packet and frame are interchanged in the layer 1 and 2 of the OSI model.
Indicates where network information is located in an IP address?
The subnet mask is used for this purpose; it divides the IP address into two parts, the network id, and the host id.
try to change DNS..
in local setting to 8.8.8.8 or other DNS and don't but local DNS
mzayed@iconsultjo.com
The application tcp-ip layer maps to which osi layers?
The Application layer
The Presentation layer
The Session layer
What enables you to connect a PC via modem to an ip network?
You need to use a protocol that will translate serial protocol (your modem) to a packet based network. Protocols such as SLIP, PPP, PPTP are used for that purpose.
The layer directly above it
The layer directly below it
The corresponding layer on the receiving computer
What is IPv6 and when will it be used?
(Internet Protocol) IPv6 is the next step from IPv4. Currently we are not using IPv6 for our networks but soon it will implemented into our networks normally.
IPv6 uses 128 bit spaces for its ip addresses were as IPv4 only uses 32 bit spaces. That means IPv6 can support 2128 addresses. I do not think we will run out of addresses with this version anytime soon.
Four collision domains are present
Two broadcast domains are present.
The Gnutella Network is a network used primarily to exchange files on a peer to peer basis.
What layer of the OSI model defines the rules for accessing and using the physical layer?
The physical layer - it describes the hardware and the signaling techniques used at the physical connection between the network and the device.
Class A has range 1-126 class B has 128-191why 127 is not exist?
(not so sure).. i think this block is reserved for loopback address on PCs
What is the different between mac address and ip address?
MAC address is fixed to the hardware device (for example a network card) and can not be changed. IP address is assignable. The default IP address for a device can be computed by converting the four right-most numbers of the MAC address from hex to decimal.
The MAC address refers to the physical address assigned by the Network Interface Card manufacturer. Example - 10.03.d5.f3.45.fc , where are an Internet Protocol address is given to a computer when it gets connected to the network. Its divided into four parts , separated by fullstops.
Explain the different between peer to peer and client server configuration?
In Peer to peer the machines work as a workgroup machines and can access each other and they process themselves but in client server model all the requests of clients are sent to server it processes the request and send the result to client
