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Cisco
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.
1,095 Questions
What are the function of an application layer?
Application layer is the topmost layer. Application layer is used to access the underling network services using defined procedures. Application layer interacts with software applications that implements a communicating component.
Functions:-
Identifying communication partners.
. Determining resource availability.
Synchronizing communication
What are some features of a Cisco 2610?
One feature of the Cisco 2610 router is that it has either single- or dual-fixed LAN interfaces. Other features of the Cisco 2610 router are that it can browse the internet safely with firewall protection and the routing comes standard with bandwidth management.
Roll over cable colour code for rj45 connector?
To know colour coding of cross cable we need to know some basic facts like where it is use and from where we can generate it.The answeres are crossover or we say cross cable is used for connecting similar devices like pc-pc or hub-hub etc,and we can generate it from the basic colour coding of 568a standard.But the question is how?as 568a standard is a standard for twisted pair but itscomes under the subcategory ofunshield twisted pair cable.so,lets come to the main ans,so here we go--
568a colour coding is
green=gr,white=w,orange=or,blue=bl and brown=br(short form)
1.gr/w
2.gr
3.or/w
4.bl
5.bl/w
6.or
7.br/w
8.br
As we can see above the colour coding of 568a cables{straight(use to connect dissimilar devices like pc-hub)}the basicof colour coding.we can generate the colour coding for cross cable from it-
straight cross
1.gr/w3-1 1-3 1.or/w
2.gr6-22-6 2.or
3.or/w 3.gr/w
4.bl4.bl
5.bl/w5.bl/w
6.or 6.gr
7.br/w 7.br/w
8.br 8.br
As we switch 3-1 that is put no.3 of straight in no.1 of cross(from left side)and cancel no.1 that is gr/w,so we get the combination of or/w in no.1 in cross.As we do the others that is
1-3,6-2 and 2-6(from left side)we get the combination for cross.If somebody wants to remember directly he can,but its the alternate method and from the basics.
How does a router know of path to destination network?
How does a router know of paths to destination networks? (Choose two.)
• inspection of the destination IP address in data packets
ARP requests from connected routers
manual configuration of routes
• updates from other routers
DHCP information broadcasts
updates from the SMTP management information base
When do you need to configure a clock rate on a router interface?
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.
What is the meaning of remote host in computer?
a computer that resides in some distant location from which data can be retrieved .It typially refers to a server in a private network or public network.
Which is the private IP address that cant be routed across the internet?
The ranges and the amount of usable IP's are as follows:
10.0.0.0 - 10.255.255.255
Addresses: 16,777,216
172.16.0.0 - 172.31.255.255
Addresses: 1,048,576
192.168.0.0 - 192.168.255.255
Addresses: 65,536
Where can I find free CCNA online exam dumps?
You can Google for this information, but I don't recommend using a braindump site; the answers are very often incorrect, since it is based on the memory recollection of someone who took the exam, and the answers have not been checked for accuracy.
Furthermore, the use of such material goes against the user agreement that you sign when you sit for an exam.
What kind of network uses SC connectors?
Fiber Optic connectors are normally either SC or ST SC is the accepted standard.
(Network+ Guide to Networking answer)
A fiber-optic connection between a server and router
**Switch-6J#
What are two common causes of signal degradation when using UTP cabling?
UTP or unshielded twisted pair cabling is used in local area networks. Two causes of signal degradation are losing light over long distances and low quality cable shielding.
Which OSI layer combines messages or segments into packets?
The transport layer. Page 123 from Jeffrey S Beasley's "Networking"
What is the command used to get into global configuration mode on a cisco router?
On user exec mode type enable.
When inside the privilege mode type configure terminal. You will then be sitting into global config after this.
Please see below example:
Router>enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
How does Cisco IP telephony support voice and video communication?
There are three different ways. The first one is by voice over ip. The second way is by using a voice over ip service and the third way is by using landline telephones with a analog telephone adapter connected to your network.
What are the advantages of networking your computer together?
By networking multiple pcs, or macs you can share files easily, Edit other files on other computers without the need to put it on an external drive or USB flash drive. You also don't need to have multiple copies of item/s on each computer, photos, songs, movies can be stored on the one and shared throughout. You can also share a dial-up and broadband internet connection.
well, a firewall could do it, but an Intrusion Prevention System is the more obvious answer.
How can you configure a router Cisco?
Well what sort of application is the 2600 router going to be used in? Here is a short thing about setting the clock http://www.learnios.com/viewtopic.php?f=4&t=36 Here a little more on setting up interfaces http://www.learnios.com/viewtopic.php?f=72&t=34 Here is password recovery steps http://www.learnios.com/viewtopic.php?f=4&t=28 Setting up cisco routers can be done many ways if you are looking for and more direct answer I suggest asking a more direct question like "how do I setup DCHP on my 2600" or how do I ip interfaces
The idea is to send a message to several recipients at once. On the backbone of the network, a message might be sent only once; later, when the paths to the recipients separate, several copies are made. This can help save bandwidth of the Internet backbone (or other, smaller, networks), in certain circumstances. Multicasting is especially useful if the same information is to be sent to all recipients at the same time. A typical case might be a live radio or television broadcast over the Internet.
The idea is to send a message to several recipients at once. On the backbone of the network, a message might be sent only once; later, when the paths to the recipients separate, several copies are made. This can help save bandwidth of the Internet backbone (or other, smaller, networks), in certain circumstances. Multicasting is especially useful if the same information is to be sent to all recipients at the same time. A typical case might be a live radio or television broadcast over the Internet.
The idea is to send a message to several recipients at once. On the backbone of the network, a message might be sent only once; later, when the paths to the recipients separate, several copies are made. This can help save bandwidth of the Internet backbone (or other, smaller, networks), in certain circumstances. Multicasting is especially useful if the same information is to be sent to all recipients at the same time. A typical case might be a live radio or television broadcast over the Internet.
The idea is to send a message to several recipients at once. On the backbone of the network, a message might be sent only once; later, when the paths to the recipients separate, several copies are made. This can help save bandwidth of the Internet backbone (or other, smaller, networks), in certain circumstances. Multicasting is especially useful if the same information is to be sent to all recipients at the same time. A typical case might be a live radio or television broadcast over the Internet.
If there is a congestion in one direction, the FECN (forward explicit congestion notification) bit is set to inform routers in the forward direction (from the point of view of the traffic) about the congestion. Also, eventually some frames will travel back to the origin; in that case, the BECN (backword explicit congestion notification) bit is also set to inform the origin about the congestion.
What types of cable products are provided by Cisco?
This document summarizes the cabling requirements for console and auxiliary (AUX) ports. Cisco routers either have RJ-45-based or DB-25 DCE/DTE console and AUX ports. You can connect either a terminal (DTE) or a modem (DCE) to these ports. In either instance, you need both an RJ-45 cable and an RJ-45-to-DB-25 or RJ-45-to-DB-9 connector.
What three routing protocols are distance vector routing protocols?
Routing Information Protocol (RIP) and Interior Gateway Routing Protocol (IGRP) are two very popular Distance Vector routing protocols
