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Cisco

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Cisco Systems, Inc. is a major IT company, which produces networking equipment and network management solutions for both personal and commercial use. Questions about this company and its products belong here.
A router running a classless routing protocol (Such as OSPF) will send the subnet mask in its route updates to its neighboring routers.
The purpose of Layer 4 port assignment is to identify the processes or services that are communicating within the end devices.
Ping stands for: P acket In ternet G rope
Hubs support broadcasting and operate in a single collision domain. Also they send the package to all connected interfaces even if it wasn't addressed to that interface. Switches break collision domains, and by default block broadcasting (but can be set otherwise). Also the package addressed to a...
It depends on model. Some models can save some data without reloading, some can't. Thus you can have partially configured router or not configured at all. But reloading is not going to damage your router.
You can get them from anywhere from 50-1000$ depending on where youget it.
well, a firewall could do it, but an Intrusion Prevention System is the more obvious answer.
This is caused by port security being enabled and having the violation setting set to shutdown. This is triggered when you have two many MAC addresses listed for the port of if a BPDU is sent to that port, depending on how port security is configured.
Om (or AUM) is the sacred syllable of Hinduism and represents God or Brahman - the source of all existence representing the three qualities inherent in the Cosmic Vibration. A - represents ( Brahma ) creation U - represents ( Vishnu ) Preservation M - represents ( Siva ) Transmutation
ACL stands for Anterior Cruciate Ligament
If you Google "Cisco Lab Kits" you'll find a lot, and the grey market.
Ports on Cisco routers can be enabled or disabled by the router OS. "Administratively Up" simply means that the port has been enabled by the router's OS. If a port is enabled (Administratively Up) and the protocol is down, then there is a problem with communications over that port. Problems could...
bobo The packet is sent to discover neighbors within the EIGRP network. The packet is sent to search for network devices within an EIGRP network. The packet is used to propagate routing information within the EIGRP network. The packet is used to send an unreachable reply to another router...
Cisco is the world's leading IT Devices manufacturer considered tobe the biggest stakeholder in the IT Industry when it comes to ITDevices and hardware that includes Routers, Switches, Transceivers,Modules, Servers and much more. Currently Cisco provides a multitude of product extensions underthe...
A full explanation would be too long for a quick question and answer; if you do the complete download, you will find a lot of tutorials that can help you. The tutorials are videos that show you step by step how to do different actions.\n\n. Packet Tracer allows you to do a fairly complete simulation...
If a client send a query requesting for a particular web page to the DNS server and if the DNS server resolves the page from the other DNS servers & it will be store the same page in the DNS cache and it will give the response to the client with the requested page. If again the same web page is...
Try "cisco" I'm not 100% certain though.
Static addressing is when you manually assign an IP address to computers accessing your network. Pros - Managing your networks devices manually can be good for small networks - If devices come into the network and need to be monitored specifically - If you have devices moving in and out of your...
Unless there are static ARP mappings, the cache will be cleared when powered off.
computer information system company
When it needs to provide clocking for the serial line. This occurs when you are using a null-modem cable in a lab. You would apply the clock rate to the router that is connected as the DCE device.
255.255.252.0 22 Network Bits = 2 full octets (255.255) + 6 bits (252)
Assuming the subnet mask is 255.255.255.0 the first usable host address is 192.168.1.1
Parent company . A corporation is owned by its shareholders. A number of people (shareholders) can invest their money into a corporation and own shares in that company.. In a parent company, a company such as the one above starts up another corporation (subsidiary corporation), and the original ...
Spanning Tree Protocol (STP) does not set up trunk links, it is used to remove logical (Layer 2: Data Link) loops in a network in case there is layer 1 (Physical) redundancy
The whole idea of a routing protocol, such as RIP, is that routers learn about other networks (those that are not directly connected) automatically. This reduces the amount of configuration needed, and allows the routers to adapt to changing conditions. For example, if a certain route is not...
Any of them might be connected to a router, but if it connects to a piece of equipment provided by an ISP, usually the ISP's equipment will have the DCE connection, and the router will have the DTE connection. The DCE connection is the "master" part - the part that controls the transmission speed.\n...
The "enable" command will bring the privilege level from user exec to privileged exec. Example: R1> R1>enable R1#
The service password-encryption global configuration command will encrypt all non-encrypted passwords (enable password, line console, line vty, ect) with a basic encryption algorithm.
There is a problem with the interface at the data-link layer that prevents it from functioning properly
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
Assuming both devices are the same type of device (both computers, both routers, both switches, etc), a crossover cable is needed for this. A crossover cable will move the transmit pins of one device to the receive pins of the second device, and visa-versa.
Bridge Priority and MAC address is used to break a tie.
A server is not necessary to create a LAN. You can connect all of the devices using UTP cable and a switch or router (a hub would work too, but they are slower devices).
When you send a packet across the network, it is typically destined for one host and one host only. This is called single casting. You "cast" (tell) the message to a single host. However, there comes a time when a message needs to be sent to more than one person at a time. For example, when you are...
The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing protocol to calculate this "metric".\n The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing...
OSPF uses cost as its routing metric . cost is calculated for every outgoing interface of a router through which packets transfer. it is calculated by the formula cost = 100000000/(bandwidth of output interface) most likely bandwidth of serial int is 1544kb= 1544000 bytes PS: all cost calculation...
tracert (traceroute on unix-like systems) will do this. use the command tracert /? for more information on options for this command, such as the maximum number of "hops".
I think ip source-route and policy routing very often get confused, but they are two very distinct things. Policy routing is a way of specifying routes to depend on various parameters, including perhaps the source IP address of a packet. It is a local policy applied at a router. ip source-route is...
Why concentrate on version 2? We are currently teaching with version 4. Version 2 was used like 5 years ago, and is now quite obsolete.\n Why concentrate on version 2? We are currently teaching with version 4. Version 2 was used like 5 years ago, and is now quite obsolete.\n Why concentrate on...
A Admin can set the Administrative Distance (AD) on a static route to tell the router how reliable the route is. Dynamic routing protocols use metrics to determine route reliability.
The Cisco model series for IPS Sensors is the 4200 line.
- To restrict traffic on specified trunk lines. Explanation: By default all the VLANs that exist on a switch are active on a trunk link. VTP pruning allows the switch to not forward user traffic for VLANs that are not active on a remote switch. This feature dynamically prunes unneeded traffic...
Switchport mode allows for the configuration of a port into certain settings. A few examples are Access, Trunk, and Dynamic. Each mode allows for different functions. Access mode is used for end devices, this allows for certain port security settings. Trunk mode is used for lines between switches...
At the Distribution Layer of the network, routers direct traffic and perform other functions critical to efficient network operation. .
That depends on the model of the switch, you can lookup the technical specs by doing a quick search at cisco.com.
An end device acts as the source (i.e., generates and transmits messages) or as the destination (i.e., receives and interprets messages, that is, consumes their information content) of the communication process, whereas the linked intermediary devices form a transmission system in order to...
There are more than 3 protocols at the application layer. Three well-known protocols are: HTTP - web page traffic FTP - file transfer traffic SMTP - email transfer
Crossover Cable (T568A on one end, T568B on the other)
Orw-or,grw-blu,bluw-gr,brw-br
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Should you start a Cisco router sans config (as is the case when you first purchase it), then it will not do anything but power on - yet. You must attach a cable to the console port of the router on one end, and the serial port of your computer at the other. This can also be done using a rollover...
To connect multiple routers in PacketTracer 5.2, first select the "routers" section in the bottom left hand corner. From there, you can drag two routers from the pane to the right onto the working area (the large white space on your screen). Once both routers are on the screen, click "connections" ...
1. straigth cable are more effective than the crossover cable....
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Cisco Systems, Inc., one of the leading manufacturers of routers and switches, offers quite a few different certifications that certify that you are able to work with Cisco devices, and networks in general, at a certain level. These are often requirements for technical jobs in the networking...
The quality of a Cisco service provider depends greatly on the customer service and how they respond to customer complaints, one of the best ways to find this info is through BetterBusinessBeauru, one the best Cisco service provider I know is Edge 1
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Yes, Roll Cable can connect to RJ45 Connector
- Data channels are shared among communication devices improving the use of bandwidth. - Messages can be stored temporarily at message switches, when network congestion becomes a problem. - Priorities may be used to manage network traffic. - Broadcast addressing uses bandwidth more...
A router is a networking device that have networking capabilities . A Cisco router like any other router perform the same function. But a Cisco router is a Cisco Proprietary . A router, by Cisco or any other manufacturer, provides wireless networking capabilites (Wi-Fi).
A cloud represents the telecommunications provider which we use to route our traffic over a relatively larger geographical location. Telecommunication service providers(TSPs) already have established lines(telephone, cable..etc) throughout a country. These lines are used by companies to route WAN...
It disables nonessential system processes and services.
Laptop, Server, Desktop, PDA, Xbox 360
Layered models *Have modularity which increases clarity *Give better understanding of the networking process
you can use SHOW IP PROTOCOL you will be able to see all running protocols in your router and its details...
When you will need to delete individual statements in the list.
Identifies the interface as connected to the outside
It is usually implemented on routers, firewalls, or servers It enables Internet connectivity for devices with nonregistered IP addresses