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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
Features added in the current version of Kerberos Version5 are designed to allow inter-network authentication (in Kerberos terminology, referred to as "cross-realm" authentication). Recent proposals have included using public-key cryptography for both initial authentication of clients (TGT) and for cross-realm authentication. Such changes will make it more feasible for Kerberos to scale to larger sets of networks, but the question is far from resolved.
- Version 5 added support for forwardable, renewable, and postdatable tickets. These accommodate long running processes and processes which need to run automatically in the future, in addition to allowing users to use their credentials on a machine other than the one they logged in on.
- Kerberos tickets can now contain multiple IP addresses and addresses for different types of networking protocols. This allows the use of multi-homed machines
- Replay caches keep track of recently issued tickets and do not allow the same ticket to be used twice in a row. This cuts down on the ability of attackers to hijack cached tickets before they expire.
- There is now support for transitive cross-realm authentication which removes the requirement that each pair of realms that wish to allow authentication must share a secret. In large networks consisting of many realms, the number of secrets can become quite large and is not scalable. Instead, transitive cross-realm authentication allows a path between secret-sharing realms to be specified so that credentials from the desired realm can be earned by following this path
What is the correct order in which the DHCP message types are successully initial in a IP address?
Dhcpdiscover, dhcpoffer, dhcprequest, dhcppack
What is the minimum number of fiber strands in a fiber-optic circuit used for networking?
Assuming this question is not about patch cable, six strands may be smallest these days. Also, some patch cable type fiber might come for two strands.
Options availables in files and folder sharing with in network computers?
i dont know..please give me the answer
Example of public and private ip Address?
A public ip address can be anything that is not in these three ranges. 10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, or 192.168.0.0 - 192.168.255.255.
How does the IP address indicate the network?
The first octet determines what class of network you are located on. From that, you can determine how many of the octets represent the network address, and which part represents the client or host portion.
IP addresses in version 4 (iPv4) are divided into two segments: the network id and the host id. Knowing the range of network class addresses will help:
Class A is 0 - 126 and uses only the first octet for the network portion
Class B is 128 - 191 and uses the first two octets for the network id
Class C is 192 - 223 and uses the first three octets for the network id
An example would be:
192.168.1.5 is a class C address, so we use the first three octets for the network id.
This gives a network id of 192.168.1.0 and a host id of 5 in that network.
If you have multiple email servers how can you specify which of those is the primary email server?
By defining priorities in the MX record.
Does a cisco router has a cmos battery?
Not so much a CMOS battery, but the data in NVRAM (startup-config) is in some models powered by a battery, which is pretty much the equivalent. In other models (among them the 2600 series) NVRAM is implemented with an EEPROM which does not use a battery.
It sends queries to adjacent neighbors until a new successor route is found.
What is peer to peer copyright infringement?
That would probably be copyright infringement by copying files over a peer-to-peer network. It is very easy to share files over such a peer-to-peer network (such as LimeWire, Kazaa, eMule, etc.), so you can easily share, or upload, both legal and illegal files, i.e. files which you are, and which you are not, allowed to copy according to copyright laws.
Which standard is also known as structured cabling?
TIA/EIA's joint 568 Commercial Building Wiring Standard
OR TIA/EIA 568A Standard
Can 2 wireless routers be connected to a router i have a netgear and d-link router and a ubee modem?
Yes, you can do that. But it can be done only in series type connection not in parallel. Meaning that you should connect one of your router directly to the modem and another router connect to the first one.
How many gigabit is an tetrabit?
no such thing as tetrabit. its terabit. >_> 1000 gigbit = 1 terabit.
If you divide a net into several subnets, subnet-zero is the first subnet. Some older technologies don't allow the use of this first subnet.
If you divide a net into several subnets, subnet-zero is the first subnet. Some older technologies don't allow the use of this first subnet.
If you divide a net into several subnets, subnet-zero is the first subnet. Some older technologies don't allow the use of this first subnet.
If you divide a net into several subnets, subnet-zero is the first subnet. Some older technologies don't allow the use of this first subnet.
How many connections are required by a fully-connected network with five stations?
A fully connected network follows the formula c=n*(n-1)/2, where n is the number of nodes and c is the number of connections. So, for a network of 5 nodes (stations) there would be 5*4/2=10 connections.
It is a multicast address.
If we convert first (it is highest) octet to binary form, we'll see it like this:
00-00-01-11
Because the least bit (last bit from left to right in this line) of the highest octet is set to 1, this address is considered as multicast and is flooded to all points of ethernet network.
How does one get into a Netgear router?
That depends on the router model in question. The most common username/password combination is admin/password but there are some models that have no username (meaning that you leave that field blank) with a password of password or 1234 and yet others that have the username of admin but that, instead of using the password of password, they use 1234 of leave the password field blank.
For the most recent information, go to https://www.lifewire.com/netgear-default-password-list-2619154It is organized by model number of the device in question.
I hope this helps. If you have any other questions, feel free to drop me a line. If you are in the northeast Kansas area and wish professional help, let me know and I will be glad to set an appointment with you through my company.
How does a file transfer protocol work?
A File Transfer Protocol works on a client-server architecture and uses separate control and data connections between the server and the client. FTPs are used in businesses and government agencies world-wide.
Are self-contained hardware devices with firewall functionality that you can add a network?
Routers usually, if not always, include a firewall. This is the only device I know of.
