Recent IT Questions

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Half-duplex and full duplex operation issues?

Although I have studied some information on half-duplex and full-duplex operation I am not entirely sure how the following figures work out, any help would be appreciated.For this scenario lets assume UTP cable is being used: So far in my studies, the information provided to me states that the...

View Answer   |  May 7 2008   9:08 PM GMT   |  asked by Asdaman
Half Duplex, Full Duplex, Ethernet


program to simulate the behaviour of CSMA/CD Protocol over Ethernet

Can anybody give me a program that simulate the behaviour of CSMA/CD protocol over Ethernet. Its very urgent please help me.

Answer Question   |  Apr 13 2008   6:33 AM GMT   |  asked by Shyampatibandla
CSMA/CD, Ethernet, Network simulator


what is a program code to simulate the behaviour of CSMA/CD protocol over Ethernet?

what is a program code to simulate the behaviour of CSMA/CD protocol over Ethernet?

Answer Question   |  Apr 9 2008   7:03 AM GMT   |  asked by Hansa talsania
Ethernet protocols, IEEE, Ethernet


Collisions in network cable

I still get collisions on one of my network cables even when I have a switch. Is this to do with the cable I'm using? What can I do?

View Answer   |  Mar 12 2008   10:20 PM GMT   |  asked by NetworkingATE
Network cabling, Network cable, Switches


How should I upgrade my network infrastructure?

I am now upgrading the network infrastructure of my office and I have 10-15 computers. Now what I want to do is to connect to the Internet with a wireless or wired Ethernet connection and connect the Microsoft workgroup sharing with another wired Ethernet. Is it possible to connect a LAN connection...

View Answer   |  Mar 12 2008   10:13 PM GMT   |  asked by NetworkingATE
Network infrastructure, Network upgrades and patches, Network design


How do I see one HBA ww port name ?

I want to know what is the command or set of step to get to the ww port name of a Fiber Channel card. I thought it was on the strsst menu, But I can´t find it

Answer Question   |  Feb 15 2008   11:45 PM GMT   |  asked by Murgangel
HBA, Networking, Ethernet


30% throughput on ethernet uk-ireland, 3 carriers

i have recently supplied a 100mb/s ethernet to my customer, between dulin - london.3 telcos form this circuit end to end. i.e. 3 segements to the circuit.when telcos run ethernet tests the throughput is ok.however on live data ftp tests, the circuit consistently shows througput of c.25%.I have a...

View Answer   |  Jan 24 2008   11:31 PM GMT   |  asked by Cozz27
Network testing, Network traffic analysis, Multiple service operators (mso)


LAN connection problem

I have a Dell Latitude C610 (OK stop laughing), running XP Pro. I am VERY novice. My company gave me a Sprint USB wireless modem, I installed and it works well. Since installing it, I cannot get the laptop to use the onboard LAN port when I need it. I boot without the wireless, and plug my Ethernet...

View Answer   |  Dec 28 2007   8:50 PM GMT   |  asked by It74me
Dell notebooks, LAN, USB


Ethernet and Patch Cables

What's the difference between Ethernet cable and Patch cable? And what does "straight-through" mean? Thanks

View Answer   |  Nov 30 2007   4:50 PM GMT   |  asked by 123456
Cabling, Ethernet


ethernet bandwidth

How does ethernet deliver different bandwidths?

Answer Question   |  Oct 8 2007   5:44 PM GMT   |  asked by Dave L
Ethernet, Bandwidth, different


TCP Retransmissions b/c of Checksum Incorrect

We have a problem where some users will complain of slow application response time (on the LAN) from our ERP server, but others will be fine. After many hours of troublshooting I've discovered the following:- Packet Sniff's of affected users shows TCP Retransmissions because the Checksum is...

View Answer   |  Jul 19 2007   3:55 PM GMT   |  asked by tbitner
Networking, Availability, Bandwidth


Firewall rules

Good Day!Currently, this is a simple LAN network with firewall diagram in my company. Please kindly refer to http://hgym.photosite.com/firewall/LANfirewall.html for the mentioned diagram.I wish to set an IP on the network interface of the FTP/Web/Mail Server. Any suggestion?Meanwhile, I...

View Answer   |  Jun 28 2007   11:02 AM GMT   |  asked by hunkgym
Cabling, Remote management, standards


Dell Optiplex GX520 hibernation/sleep mode issues

Hello,We have several Dell Optiplex GX520's on the network running Windows XP pro. They randomly fall into sleep mode. Moving the mouse will not wake them - you have to push the power button to get them out of sleep mode. Also we are not able to remotely wake them to do patch updates or remotely...

View Answer   |  Jun 26 2007   3:45 PM GMT   |  asked by jmello
Hardware, Microprocessors, NIC


Looking for clarification on new IP layout

I currently have a 192.168.1.0/24 network. I have one cisco router with many cisco switches that allow everyone to have a DHCP ip of 192.168.1.X. I will soon have more people then the /24 will handle, so I would like to switch to:172.16.30.0 subnet255.255.254.0 mask172.16.31.255 broadcastThat...

View Answer   |  Apr 2 2007   2:26 PM GMT   |  asked by kevins74
Career development, Networking, Availability


Please help me…If you know the answer, please put the number and write the answer.

1. The client currently has a A company's dial-up ISP connection, but has just installed B company's broadband as a replacement ? in the month or so it takes to stop the A company's subscription will you be able to:-a. Connect to the A company's POP3 server to receive the A company's emails using...

View Answer   |  Feb 1 2007   9:11 AM GMT   |  asked by 111110
Exchange, Spam, Exchange security


Default gateway VS ip default route

I manage a rather complex network. At one of my sites, I have a Cisco 3750 switch as the main switch. I have all LAN devices set to point to this switch as their default gateway. I have the switch default gateway set to point to the firewall. However, no traffic will go past the switch to the...

View Answer   |  Jan 22 2007   8:20 AM GMT   |  asked by acandler
Networking, Ethernet


Routing Between Subnets and between networks

1.I have two separe networks 192.168.0.0 and 192.168.1.0 ,they r physicall connected. What should i configure and where to configure so that host of each network can connect to other host in other network.2.I have two separe Subnets(after subnetting a class B network),they r physicall connected....

View Answer   |  Jan 10 2007   4:12 AM GMT   |  asked by chinmoymohanty
Networking, Availability, Bandwidth


Exchange 2000 server and ms outlook 2000 installation,configuration

Hi,I am going to deply MS Exchange 2000 server in my organisation, Before that we have no message system, Now we have 200 systems of windows XP/Windows 98 with MS Windows 2000 Advanced Server. Pls guide me how to Install and Configure MS Echange 2000 Server and MS Outlook 2000.What r the parameters...

View Answer   |  Jan 8 2007   11:09 PM GMT   |  asked by chinmoymohanty
Exchange security, Hardware, Cabling


wireless vlan

hi all,is it possible to have one link from a switch to an access point and split the network into two networks a wireless network from the AP and a wired port for a user connected thru RJ45 and still keep it secured.

View Answer   |  Nov 28 2006   3:04 AM GMT   |  asked by 9222099
Networking, Availability, Bandwidth


odd NIC problem

Howdy all...I have a win2k3 member server with 2 onboard Intel PRO lan connections. One is 100mb the other 1000mb.On the 100mb connection, I can set either a DHCP or Static TCP address and it works fine.On the 1000mb connection, it works fine on DHCP, but absolutely refuses to connect with a static...

View Answer   |  Oct 20 2006   5:47 PM GMT   |  asked by TheVyrys
Hardware, Cabling, NIC


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