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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
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.
Write the steps to switch on a computer?
The steps to switch on a computer begin with making sure that the computer and its peripherals are plugged into an electrical outlet. Turn the power switch on the electrical outlet and press the power button on the computer tower. Turn on the computer monitor and wait for the computer system to start up.
After setting up one or more scope sof contiguous address ranges and activating each scope to configure your DHCP server, you must then authorize your server as a security precausion.
How does a client application identify a server application on another computer on the network?
By the port number or the port address
You might never want to use subnetting if?
There is no need to use subnetting if you have no wish to further divide up your network into smaller, logical networks.
What wires are not used in cat 5e cable?
Pins 4 - 5 and 7 - 8 are not used for carrying network signals. They may be used for other purposes.
A: SYN flood attack
A web browser is best associated with which layer of the OSI model?
A web browser is best associated with the application layer of the OSI Model.
Could you get abstract on security protocol for sensor network?
Yes - almost all vendors of IDS or IPS sensors have a whitepaper on what protocols they support.
Where data packets are transmitted through different layers of the OSI model?
The OSI Model was created based on recommendations from the International Organization for Standardization (ISO) in 1980, which started expanding on the DoD model in the late 1970s. The current standard was published in 1996. The official title for the model is the ISO OSI (Open Systems Interconnection) Reference Model since it describes or relates to connecting systems that are open for communication with other systems. In the model, the functions of the communication system are standardized by categorizing them into abstract layers. The functions which are similar are grouped into the same layer and provide services to the layers above their
What Does the OSI Model Do?The OSI model depicts how data communications should take place. It splits the functions or processes into seven groups that are described as layers. When protocols or other standards are developed by other organizations such as the American National Standards Institute (ANSI), Institute of Electrical and Electronic Engineers (IEEE), and the International Telecommunications Union (ITU) formerly known as the CCITT (Comite Consultatif Internationale de Telegraphique et Telephone), they are placed into a layer of the model to help with communication protocol integration and conceptual understanding. The majority of major network and computer vendors, large commercial entities, and governments support the use of the OSI model. Each of the layers of the OSI model is intended to function with those above and below it respectfully within the model definition.The OSI model defines standards for:
- The way in which devices communicate between each other.
- The means used to inform devices when to send data and when not to transmit data.
- The methods which ensure that devices have a correct data flow rate
- The means used to ensure that data is passed to, and received by the intended recipient.
- The manner in which physical transmission media is arranged and connected.
The seven layers of the OSI model are:
- Application Layer - layer 7
- Presentation Layer - layer 6
- Session Layer - layer 5
- Transport Layer - layer 4
- Network Layer - layer 3
- Data-Link Layer - layer 2
- Physical Layer - layer 1
A common mnemonic used to remember the OSI model layers starting with the seventh layer (Application) is: "All People Seem to Need Data Processing." The lower two layers of the model are normally implemented through software and hardware solutions, while the upper five layers are typically implemented through the use of software only.
Each layer of the OSI model has its own unique functions. The process of sending data is typically started at the Application layer, is sent through the stack to the Physical layer, and then over the network to the recipient. Data is received at the Physical layer, and the data packet is then passed up the stack to the Application layer.
Different protocols operate at the different layers of the OSI model. Each layer of the OSI model has its own protocols. TCP and IP are collectively called the protocol stack or the network/transport protocols. This is due to the protocols operating at the Network and Transport layers to make it possible for computers to communicate. A protocol stack, r stack, is a group of protocols which are arranged in layers to enable communication. In the protocol stack, each layer provides services to the layer above it; and each layer also receives services from the layer beneath it. For two computers to partake in communications, each computer has to be running the same protocol stack. They can however have different operating systems.
The published "advantages" of the OSI Model are: enhanced learning/teaching, reduced intricacy, modular engineering, interoperable technology, accelerated advancement, and standard interface definitions. Unfortunately; however, the OSI Model has not been found to map well to real world networking implementations or issues as the technical world has evolved. It is the most recognized model; however, and is still often used to describe networking protocols, gear, prob
It is the IP address you use to connect to the internet. Every computer connected to the internet has an IP address no matter if it is a Windows or Mac computer. To find your IP or iMac address open System Preferences and click on the Network icon. Look on the left and find your Internet connection. Click that and your IP address will appear.
What three protocols operate at the application layer of the OSI model?
There are many more than three protocols which can operate at the application layer. Some of these are;
Telnet
FTP
TFTP
SMTP
IMAP
POP
DNS
RARP
BOOTP
SNMP
CMOT
A network uses a subnet mask of 255.255.255.0?
That could be a default subnet mask for a class C network.
A mask used to determine what subnet an IP address belongs to. An IP address has two components, the network address and the host address. For example, consider the IP address 150.215.017.009. Assuming this is part of a Class B network, the first two numbers (150.215) represent the Class B network address, and the second two numbers (017.009) identify a particular host on this network.
Subnetting enables the network administrator to further divide the host part of the address into two or more subnets. In this case, a part of the host address is reserved to identify the particular subnet.
What types of computer crime do firewalls protect against?
can anyone tell me? What types of computer crime do firewalls protect against
No it would not, it could actually slow the speed down of the second computer. It could depend on the speed coming in to the house, and the quality of the router you are using, but it will most likely slow down by a few MbPS.
AnswerI disagree with the first answer. I think that sending the second computer to the cable modem via a router and ethernet cable should improve its speed. Now if that improved performance and convenience mean that both computers are online at the same time more frequently, then that might affect the performance of both. But when used one at a time, I would expect to see no difference for the first, and an improvement for the second.Which network transmits data without wiring or cabling?
A network that can transmit data wirelessly is called WiFi. WiFi uses radio waves to transmit data between computers and across networks. There are various different WiFi types, namely A, G, and N.
How do you minimize electrical interference on your computer cables?
Keep the cables away from any substance that might generate EMI interference. Also, you can use a shielded cable instead of an unshielded one to reduce interference.
If 4 hosts are connected to a hub how many IP addresses are required for these 5 devices?
4 IP addresses. The hub does not require an IP address but the 4 devices connected to the hub do.
