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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
A Subnet Mask.
Which four are WAN data-link layer protocols?
The most common WAN data-link protocols are:
1. HDLC 2. PPP
3. Frame Relay
4. ATM
How do you turn a Linksys WRT54G router into a switch?
HOW DO YOU TURN ON A LINKSYS WRT54G WIRELESS ROUTER
AnswerThose devices already have built-in switches. The 4 ports that are not labeled "WAN" provide a switching domain between them. You can simply ignore the routing functionality and use it as a switch. If you really need to go the extra mile, you can disable DHCP and assign the WAN interface a bogus IP address, or simply put the LAN interface IP address on a different subnet than your computers will actually be using.
If that above does not answer your question, describing more about what you are trying to do will help. Such as, do you already have a router and you only want another router to serve as hub or switch.
What is the difference between a hub and a switch?
A hub is a multiport repeater of broadcast information (it receives on any port) to all ports hence is called non-intelligent or dumb. A hub repeats a message to all the nodes connected to its ports.
Hubs translate any signal from one PC to all others in the same network. Switches translate from one PC only to a certain PC, not to all of them as is the case with hubs.
HUB works on Physical layer whereas SWITCH works on data link layer, HUB based networks are on one collision domain, whereas in Switch-based networks, a switch divides networks into multiple collision domains. Switch also maintains MAC address tables.
A Simple Simile
Hub - Think of a postman with a letter to deliver in a row of houses, none of the houses have numbers so he has to visit each house and ask the owner if the letter is for them.
Switch - All the houses are numbered, so the postman knows where to go, and doesn't have to bother any other homeowners.
That is the reason a HUB is called a Dumb Device (or Dumb Postman).
Advantages for using switches on a network?
Switches are networking devices that are a bit intelligent in their work. Switches are broadly classified into two categories:
- Non-manageable switches
- Manageable switches
The reason why switches are more preferred in a network are:
- they are really fast than your hub
- you can even manage the switch in your network
- to improve the network traffic (data transfer rate) a switch is much prefered
1, Increased available network bandwidth. 2, Reduced workload on individual computers. 3, Increased network performance. 4, Decreased packet collisions.
How many ip addresses will a network normally expose to the internet?
Organizations are all different; they have the choice of using multiple IP addresses for each client (1 address for each client, unique), or using the same IP address for all clients (via NAT proxy).
Usually the number of IP addresses is related to the number of public services that the organization will offer, such as DNS, e-mail, Web Services, FTP servers, and so on. If the organization is big enough it might use several IP addresses for each service instead of just 1 per service.
What are the advantages of client-server networking over peer-peer networking?
Client-server networking is centralized - Resources and data security are controlled through the server. Scalability - Any or all elements can be replaced individually as needs increase. Flexibility - New technology can be easily integrated into system. Interoperability - All components (client/network/server) work together. Accessibility - Server can be accessed remotely and across multiple platforms. Speed - network will run far better as data and resources are handled by a dedicated machine. Also currently the user of the machine experiences poor performance when everyone accesses it's resources. Backup - as all data is stored centrally it is easy to backup. Support and management - as the server controls the majority of settings on the network etc the job of support is far easier as the main element of support is provided to the server and not individual machines. Global changes are easy to make from one location.
Client/server allows the installation of anti-virus on a dedicated server, this means that all stations that are connected to that server are protected against viruses. In peer to peer, each station has to be installed with the anti-virus. Because peer to peer allows the sharing of files it is possible that some files are infected and because anti-virus is not as effective on peer to peer, the virus would get in and disrupt the network.
Why did you change from 10BaseT to 100BaseT?
100BaseT: Max. Speed is 1000 Mbps. and has 4 pairs of of Category 5e or higher. 10BaseT: Max. Speed is 10 Mbps.
What is max no of hops in hypercube network to go from one node to another?
This depends on if you are using hubs or switches.
Difference between core switch and normal swtich?
hi this is kittu 23 18 26
What are core and edge switches and why should you care? A core switch is a backbone device, a switch that is central to your network's successful operation. You use it to connect to servers, your Internet service provider (ISP) via a router, and to aggregate all switches that your company uses to connect crucial pieces of equipment that your company can't afford to lose to downtime. As a result, your core switch should always be a fast, full-featured managed switch.
edge switches, on the other hand, connect client devices, such as laptops, desktops, security cameras, and wireless access points, to your network. For this reason, edge switches generally are considered less crucial than core switches to a network's smooth operation. If there are areas of the office such as a conference room where you don't need the features of a fully managed switch, your company can save some money by installing smart switches, such as the Cisco 200 Series, or even unmanaged switches for use at the edges of your network.
Which statement accurately describes a switch with all access ports assigned to the same VLAN?
Performance is increased by keeping all users in the same Layer 2 network
rip is short for routing information protcol
it is a routing protocol that shared routing tables from 1 router to another to a maximum of 16 hops of 16 routers
Distance vector routing in c program?
#include<stdio.h>
int main()
{
int n,i,j,k,a[10][10];
printf("\nEnter the number of nodes: ");
scanf("%d",&n);
for(i=0; i<n; i++)
{
for(j=0; j<n; j++)
{
printf("\nEnter the distance between the host %d%d:", i+1,j+1);
scanf("%d",&a[i][j]);
}
}
for(i=0; i<n; i++)
{
for(j=0; j<n; j++)
printf("%d\t",a[i][j]);
printf("\n");
}
for(k=0; k<n; k++)
{
for(i=0; i<n; i++)
{
for(j=0; j<n; j++)
{
if(a[i][j]>a[i][k]+a[k][j])
a[i][j]=a[i][k]+a[k][j];
}
}
}
for(i=0; i<n; i++)
{
for(j=0; j<n; j++)
{
b[i][j]=a[i][j];
if(i==j)
b[i][j]=0;
}
}
printf("\nThe output matrix is:\n");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
printf("%d\t",b[i][j]);
printf("\n");
}
return 0;
}
Will including a router improve computer security?
A router can improve network security if it includes the use of NAT (network address translation) and/or a firewall.
