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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
Why do you have internet and telephones when the power lines are down?
Power lines and phone lines though using the same utility poles are two different sets of wires. Telephone wires carry their own power, separate from the power lines and are insulted while power lines are not. If the telephone wires are unbroken but laying on the ground the wires will not short to ground while an unbroken uninsulated power line will short to ground disrupting service.
yes a modem is directly for internet connections and the transfer of data through the internet a router is for direct transferr from one source to another
Which command excludes seven host addresses from a DHCP pool that has a 255.255.255.192 mask?
A. router(config)#ip dhcp excluded-address 192.168.7.0 192.168.7.6
B.router(config)#ip dhcp excluded-address 192.168.7.121 192.168.7.127
C.router(config)#ip dhcp excluded-address 192.168.7.159 192.168.7.165
D.router(config)#ip dhcp excluded-address 192.168.7.193 192.168.7.198
Answer A: cannot provide network address to host(192.168.7.0) so answer A is incorrect.
Answer B: address 192.168.7.127 is broadcast address so it cannot be given to a host.
Answer C: is correct. IP address 192.168.7.159 falls in network 192.168.7.128 which is valid and .159-.165 gives you seven IP addresses.
Answer D: IP address 192.168.7.193- 192.168.7.198 gives you six IP addresses and you need to exclude seven, so answer D is incorrect.
What is an AIX server used for?
AIX is the commercial Unix product produced by IBM. Since it is a server system, you could use it for anything that would require server services, such as Internet services, web services, e-mail services, file services, etc.
AIX in a server mode is no different than other servers in terms of offering resources to be used by other clients.
Is sending SMS connection oriented or connection less?
It's connectionless because the data is given a destination header and sent on its way. There is no way to know if the data sent through SMS arrives at the recipient short of the user of the receiving end devices responding or telling you in person. Therefore SMS is connectionless.
Source: I'm a Computer Engineer.
How hub handles a signal received in one port?
A hub resends the signal it receives out through all ports, except the port where it received it.
A hub resends the signal it receives out through all ports, except the port where it received it.
A hub resends the signal it receives out through all ports, except the port where it received it.
A hub resends the signal it receives out through all ports, except the port where it received it.
Does Putty exe allow you to remotely startup or shutdown the computer you are connected with?
Yes you can.Once connected you need to login as root using sudo or su - command. Type the following command to shutdown remote system:
# shutdown -h now
OR
# /sbin/shutdown -h now
To reboot the system, enter:
# shutdown -r now
OR
# /sbin/reboot
What can be measured by tangible benefits such as implementation costs and ongoing support?
Return on investment
Ethernet cable is RJ 45. Dial-up modem is RJ 11
How does Computer A transmits a message to Computer B?
There are many ways that computers can communicate. If you want the complete overview, do a search for "OSI Model". But, in a generic nutshell, the information is put into a packet that includes the destination information and some other error-checking information, then sent through hardware to the receiving computer.
What does a default gateway error mean?
In the computer networking setup, a default gateway connects a local network to the internet. The default gateway error generally refers to an error code where one server receives an invalid response from another server.
Can you use a Belkin router as a print server for an ethernet non-wireless printer?
If your printer is network capable, it has own print server. Just connect the printer to the router. Then connect the printer as a network printer.
Mutual Authentication
What is the responsibility of sender and receiver?
sender is to deliver or give message while the receiver is to receive a message from the giver or sender.
How is p2p different from a peer to peer network?
It isn't peer to peer and P2P refer to the same thing.
Yes, but it is best to feed it through a PVC pipe first. Then seal it to keep the elements out such as water etc.
What type of software is AnchorFree?
AnchorFree is a type of software that provides VPN, or virtual personal network services. This is a secure network that blocks mal-ware and protects the data that you are accessing.
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