What is osi reference model?


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GUY i Have attended one interview for the data craft and they are offering me L1 postion and i am working at l2 in cisco so there is no way to get in the datacraft i am posting here the question he asked to and i have tested the interviewer and i come to know he was not having any knowledge. His questions are-: 1) what is Vlan 2) what is stp and what is difference between stp and RSTP 3) what is HSRP and Diffrence betwwen HSRP and GLBP 4) how to configure HSRP 5) Scenario Based question ( if we have two router and both are connected and there are having redundancy means two interface of the router r1 is connected to the two interface of Router R2 (R1)-------------(R2 (R1)-------------(R2 Now he want to configure the router in such a Manner that if one link down second link should come up.My answer was HSRP and his is "F looting static routing was i wrong "i know F looting Static routing is Theoretically possible but it is not fusible in the scenario where you have multiple router connected to the same router and if you have configured sub interface i challenged him and he lost The Battle and he get angary 5) what the eigrp and how it works 6) tables in eigrp 7) the information of feasible successor where it saved now after answering these all he was very angry ( i can fill the heat) 8) then he come to ospf Area type ( he was also not aware) 9) LSA type and its working ( he was also having confusion ) 10) then is asked routing by rummer( Theroy) 11) hello and dead intervel of EIGRp (theory) 12) Selection cretaria for Eigrp slecting best path ( here we have a long discussion on MTU and he lost the battle and agree That MTU never comes in the accounts in this process) 13) what is ACL type of acl ( here he was aware of TWO type Standard and extended i have told him 5 type( he again get Angry) We have 2hr of discussion and and he told me he will call me latter but i know he never call

1 Answers   IBM,


Which protocol works at the Internet layer and is responsible for making routing decisions? A.) UDP B.) IP C.) TCP D.) ARP

3 Answers  


To which layer ICMP belongs

7 Answers   CMS,


Which of the following is an example of the Network Layer? A.) Token Ring B.) RARP C.) LLC D.) DDP E.) TCP

1 Answers  


IP extended access lists use which of the following as a basis for permitting or denying packets? A.) destination address B.) all of the above C.) protocol D.) source address E.) port

3 Answers  






On which layer does L2F, PPTP and L2TP operate?

0 Answers   CCIE,


If configuring a Cisco router to connect to a non-Cisco router across a Frame Relay network, which encapsulation type would you select? A.) Q933a B.) ISDN C.) IETF D.) CISCO E.) ANSI

1 Answers  


Which statement is true? A. While bridges are used to segment networks, they will not isolate broadcast or multicast packets. B. A bridge looks at every packet within its network segment and works like a hub re-broadcasting the packet if the destination is within its network segment. C. A bridge maintains a table of the IP addresses of the hosts within its network segment and forwards the packet directly to the destination based upon the IP address. D. A bridge resets the hop count by keeping all packets within the network segment. Only packets addressed to a specific destination host outside the network segment are allowed to pass through the bridge.

1 Answers  


Identify the 2 commands that will display the status and information about interface E0 only? A.) show interface ethernet E0 B.) show interface E0 C.) show E0 D.) show int E0 E.) show interface

1 Answers  


Which encapsulation methods are most commonly used with dialup Integrated Services Digital Network (ISDN)? A. IP and IPX B. IP and PPP C. PPP and SDLC D. PPP and HDLC

2 Answers  


what is difference between subnet-mask and wildcard mask?

6 Answers   IBM,


Identify the hardware component used to store buffers, tables, running-configuration etc? A.) NVRAM B.) ROM C.) RAM D.) Flash

4 Answers  


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