Answer / jitendera sinha

what is loop it is difficult to explain without any diagram.
but i am trying my best to explain it without any diagram
ok
firstly understand that what is loop
loop is a cycle.
it is difficult to understand from that explanation.

now let there 3ree switch a , b ,c.which are connected with
each other.now for back up for that connection we provide
alternate path that is called redundancy(suppose that you
know)ok
as if a user want to communicate with another user in to the
network then multiple packet is generated.and these packet
travel through each path within the network.due to this a
loop is formed
diagarm
a---------b--------c
<----------------->
lower one is alternate path between a to c.now if a want to
communicate with c then packet travel through both path and
crated loop

now in some cases stp is enabled but loop also formed it is
due to

An STP loop is created when an STP blocking port in a
redundant topology erroneously transitions to the forwarding
state. This usually happens because one of the ports of a
physically redundant topology (not necessarily the STP
blocking port) no longer receives STP BPDUs. In its
operation, STP relies on continuous reception or
transmission of BPDUs based on the port role. The designated
port transmits BPDUs, and the non-designated port receives
BPDUs.

thanks i think this article may help you
with best regards
jitendera sinha

what is 5-4-3 rule?

2 Answers  

---

In how many ways you can access the router?

0 Answers  

---

How do you configure a cisco router for routing ipx?

0 Answers  

---

Which command will display adjacent routers found by the Cisco Discovery Protocol? A.) show all B.) show cdp entry C.) show ip neighbors D.) show cdp neighbor detail E.) show cdp neighbor F.) show neighbor

2 Answers  

---

Identify the default encapsulation on serial interfaces? A.) ISDN B.) HDLC C.) SDLC D.) Frame Relay E.) PPP

2 Answers  

---

---

Given the IPX address 4a.0002.1111.a999, what is the network ID and what is the node ID? A.) net 4a host 0002.1111.a999 B.) net a999 node 0002.1111 C.) net 0002.1111.a999 node 4a D.) net 0002.1111 node a999

1 Answers  

---

What command would show the version of the IOS that you are running? A.) show nvram B.) show version C.) show startup-config D.) show ios E.) ver -a F.) show ram

1 Answers  

---

Can you explain the basic of encryption in VPN?

0 Answers   CCIE,

---

Identify 3 characteristics of the Network layer (OSI layer 3)? A.) Connnection oriented B.) Path determination C.) Supports multiplexing D.) Manages sessions E.) Packet forwarding

1 Answers  

---

Which of the following provide correct information about a protocol at the transport layer of the OSI model? A.) UDP - Provides Connectionless datagrams service B.) TCP - Provides Connection Oriented Services C.) SMTP - Provides Mail Exchange D.) IP - Route determination E.) TCP - Provides Flow Control and Error Checking F.) FTP - Transfers of Files

2 Answers  

---

What purpose does aging serve in a link state protocol?

0 Answers  

---

How do you get help on a command after you have received the % incomplete command response from a switch CLI? A. type "history" to review the prompt before the error B. enter a question mark to display all the console commands C. type help followed by the command to see command parameters D. reenter the command followed by a question mark to view keywords

1 Answers  

---