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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
How does peer editing create a better document?
you overlook what you write so your peers help with what you overlooked or misspelled and that makes it easier
STAR Topology
What is the address called on the NIC?
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What are main Cisco IOS Command Modes?
1. User exec mode
2. Privileged exec mode
3. Global configuration mode
4. ROM monitor mode
5. Set up mode
What is the pass rate for ccna?
The pass rate for the Cisco Certified Network Associate (CCNA) exam varies, but it is generally estimated to be around 70-80%. This rate can differ based on factors such as the test-taker's preparation, experience, and the specific version of the exam taken. Cisco does not publicly disclose exact pass rates, so it's important for candidates to thoroughly prepare to increase their chances of success.
Will ping command work if gateway is not connected?
No, the ping command will not work if the gateway is not connected. The ping command relies on the network path to send ICMP echo requests to a specified IP address, and if the gateway is down, packets cannot be routed outside the local network. Consequently, you will not receive any replies, indicating that the destination is unreachable.
What addresses do multicast start with?
All multicast addresses begin with "1110" as shown. The "well-known" group has zeroes for the first 20 bits of the multicast group address, with 8 bits available to define 255 special multicast addresses. Multicast addresses starting with "1110 1111" are locally-scoped; all other addresses are globally-scoped (this includes addresses starting with "1110 0000" other than the 255 "well-known" addresses.)
A switch that can be used to control the working of home appliances like flush system, hand dryer or else. The wireless switch needs no remote control for its working. You only want to move your hand between the infrared LED and photo transistor to control the device or load.
What does the semantic network theory prepose?
Semantic network theory proposes that information in LTM is organised systematically (hierarchically structured) in the form of overlapping networks (or 'grids') of concepts that are interconnected and interrelated by meaningful
links. According to this model, each concept, called a node, is linked with a number of other nodes. Thus, when we retrieve information, the activation of one node causes other related nodes to be activated also.
How many PC on internet through one modem can you use?
Without a router: 1
With a router: 253+....
With the exception that your router(Or network switch) doesn't run out of ports; In which case you just add in another network switch & daisy chain it either via uplink port or any free ethernet port. Make sure that you obtain a network SWITCH & not a network HUB as hubs devide bandwidth for every item you plug into the hub(Affects LAN speed & network latency) & switches always run at the full line speed.
Some routers have multiple LAN ports & some take it even further so that it lets you assign what ports will do what(e.g. WAN, LAN, LAN2, LAN3...) This allows for multiple sub-nets.
So lets say that your external ip is: 0.0.0.0 for visualization purposes....
Your routers main LAN or internal IP is: 192.168.0.1
You can have 253 clients or PC's on the 192.168.0.2-192.168.0.254 address range.
Your routers secondary LAN IP is: 192.168.1.1
You can have 253 clients or PC's on the 192.168.1.2-192.168.1.254 address range.
Your routers tertiary LAN IP is: 192.168.2.1
You can have 253 clients or PC's on the 192.168.2.2-192.168.2.254 address range.
You can theoretically keep going in this fashion to build your own local Intranet(Local version of Internet) But does not require registering with RIPE or any other Regional Internet Registries.
The reason you can't have 192.168.x.1 or 192.168.x.255 is because they are already assigned. 192.168.x.1 is the routers internal IP & it is also used by DHCP & other services within the router. 192.168.x.255 is the rebroadcast IP address per subnet.
In fact I believe this also applies to Internet IP address; You won't ever see 255 or 1 at the end of your external IP.
Where would you find a BNC T-connector?
A T-connector was used in a thinnet 10base2 coaxial bus network.
Discuss the consequences if a connection fails in a bus topology?
Any connection failure in a bus topology will result in the network becoming unusable due to signal bounce in the affected cable.
Nord VPN is the best, I have personally use this for over 10 years and I found them to be very reliable, fast and affordable. CAN EVEN GET A PLAN FOR LESS THAN 4 USD PER MOTHS.
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How do you deploy IPSec for a large number of computers?
Just use this program Server and Domain Isolation Using IPsec and Group Policy Basta utilizar este programa Server and Domain Isolation Using IPsec and Group Policy
Network architectures are sometimes classified into two broad categories:
· client-server architectures,
· peer-to-peer architectures.
In the client-server architectural model, a system is decomposed into client and server processors or processes. Servers provide computational resources (or services), which clients consume. Typically a server provides services to many clients. It is also common for clients to consume services from multiple services. Stated otherwise, there is generally a 1:M relationship between a server and its clients, and it is sometimes the case that there is a 1:M relationship between a client and the servers that it uses. The client-server architectural model supports the separation of functionality based on the service concept.
Client-server architectures are commonly organized into layers referred to as "tiers".
Tiered Architectures· Two-tier architectures. The system architecture consists of a data server layer and an application client layer. Data access computation is associated with the data server layer, and the user interface is associated with the client application layer. If most of the application logic is associated with the client application logic, it is sometimes referred to as a "fat client." If it is associated with the data access server, the application client layer is sometimes referred to as a "thin client."· Three-tier architecture. The system architecture consists of data server layer, an application server layer and a client application layer. The application server layer facilitates the separation of application logic from presentation, and promotes distributed processing.
· Multi-tier architecture. The system architecture is a superset of a three-tier architecture, and includes additional layers for data and/or application servers.
Peer-to-Peer ArchitecturesIn a peer-to-peer architecture model, a system is decomposed into computational nodes that have equivalent capabilities and responsibilities. This division is in contrast to a client-server architectural model, where client and server nodes are divided into server and client roles.An example of a peer-to-peer architecture is a system of intelligent agents that collaborate to collect, filter, and correlate information.
Sometimes layered ("tiered") and peer-to-peer architectures are combined, where the nodes in particular layers are in peer-to-peer relationships. For example, a multi-tiered architecture might include an enterprise management layer, consisting of peer nodes for such things as network management, event management, database management, Web sever management, and workload balancing.
