answersLogoWhite

0

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 defines an IPv4 logical network?

Hosts with the same network portion of their IPv4 address.

What is the function of a switch?

The function of a switch is to break and connect the flow of electricity.

What Usage of no ip source-route?

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 something entirely different. It is a feature where the originator of an IP packet specifies, in that packet, which routers the packet must go through to reach its destination. The path is tagged onto the options field of the IP packet. The feature is very dangerous, and most NetAdmins disable it.

I think the confusion comes about because of the words "source" and "route".

What is attenuation network?

Attenuation is a measure of how much loss a signal experiences when it travels down a communication medium( loss as heat, absorbed by communication medium).It is mesured in decibels Attenuation is a term that refers to any reduction in the strength of a signal, when transmitting over a long dinstance. Attenuation occurs with any type of signal, whether digital or analog. It is also called loss of signals, The extent of attenuation is usually expressed in units called decibels (dBs).

What is the process of encapsulation of one packet within another called?

Tunneling, but you should really read your textbook before asking routing questions online... ;)

How do you fix Cisco auto negotiation problems?

Go to the related link:

Here is a snippet from that information:

"Autonegotiation issues can result from nonconforming implementation, hardware incapabilities, or software defects. When NICs or vendor switches do not conform exactly to the IEEE specification 802.3u, problems can result. Hardware incompatibility and other issues can also exist as a result of vendor-specific advanced features, such as autopolarity or cable integrity, which are not described in IEEE 802.3u for 10/100 Mbps autonegotiation. Generally, if both the NIC and the switch adhere to IEEE 802.3u autonegotiation specifications and all additional features are disabled, autonegotiation must properly negotiate speed and duplex, and no operational issues exist. "

What is the effect of configuring the ip bandwidth-percent eigrp command?

EIGRP will use up to 50 percent of the bandwidth of a link, as defined by the bandwidth interface configuration command. This command may be used if some other fraction of the bandwidth is desired. Note that values greater than 100 percent may be configured. The configuration option may be useful if the bandwidth is set artificially low for other reasons.

Examples

The following example allows EIGRP to use up to 75 percent (42 kbps) of a 56-kbps serial link in autonomous system 209:

interface serial 0

bandwidth 56

ip bandwidth-percent eigrp 209 75

Where can one find more information about the Cisco Networking Academy?

The best place to find more information about the Cisco Networking Academy is going to be their own website. It has a lot of useful information such as what they teach and the type of classes available.

1 Collisions occur when two hosts transmit frames simultaneously is true or false?

This is only true when both hosts are on the same collision domain and are operating at half duplex.

Which services are offered by Cisco in the UK?

The services provided by Cisco are Application Management, Carrier Ethernet, Customer Collaboration, Network Management and Automaton, and Storage Networking.

Why should you hired you?

When asked why you should be hired in an interview, you should list your strengths or qualities. Tell the interviewer that you are hardworking and always complete your assignments with integrity.

Why is header checksum required in TCP?

Its used to detect an error if the packet may be mis-routed. I'm not 100% sure.

What are serial interfaces on a router typically used to connect?

a serial interface on a router is basically used for WAN communications. we generally connect to other routers through internet using serial interface. In a lab scenario we generally emulate WAN connections by connecting the serial interfaces of the routers using a cable called DCE/DTE cable.

What is transparent firewall?

Since the fundamental task of a firewall is to filter packets, the weak point in its traditional behavior is the fact that it also must route packets after a decision is made. Can the model be simplified? Of course it can, and the answer comes by stepping down a layer in the OSI model. Instead of the device handling packets at layer 3 (network), what if it merely inspected frames and moved them to the proper interface? Sound familiar? This type of device would continue to filter packets, but operate at layer 2 (data link), like a bridge. Such a device has come to be known by several names: a transparent, in-line, shadow, stealth or bridging firewall.

ranajoy karmakar@gmail.com

ccna,network engineer

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