CCNP Interview Questions & Answers

Question 1. In A Router, What Is Default Route Used For?

Answer :

It is used when there is no specific entry in the routing IP table.

Question 2. What Will The Bgp First Check To See If A Prefix Is Accessible?

Answer :

BGP will check next hop attribute to determine next hop is accessible

Question 3. What Are The Two Methods For Reducing The Number Of Ibgp Connection In A Network?

Answer :

These are confederation and route reflector

Question 4. In A Network Of Routers And Switches, What Is The Difference Between Routing And Switching?

Answer :

Switching make the final ultimate delivery while routing select the best available path in a network.

Question 5. What Is The Difference Between Rip And Ospf?

Answer :

RIP broadcast its routing table after each 30 seconds while OSPF only update those entries which are missing the neighbor routing table

Question 6. What Is The Difference Between Classless And Classfull Routing?

Answer :

Classfull routing don not advertise subnet mask information along with the network prefix while classless routing do.

Question 7. What Is The Main Purpose Of Areas In Ospfv2?

Answer :

Routers networks are divided in to areas which are they connected to backbone area0. The areas help you to give performance and easy to handle big network

Question 8. What Types Of Routers Are Allowed In Totally Stubby Areas?

Answer :

In totally stubby area, inter area and intra area route and default route are allowed.

Question 9. What Are The Router Types In Ospf?

Answer :

There are Internal Router, ASBR and ABR

Question 10. What Will Be The Broadcast Ip Of The 202.4.81.96/27?

Answer :

202.4.81.127

Question 11. In Ospfv2, What Is The Purpose Virtual Link?

Answer :

The main purpose of virtual link is to connect nonzero area with backbone area.

Question 12. What Is A Load Balancer?

Answer :

It is a network device which is used to balance the load in on available nodes.

Question 13. What Is Voice Circuit?

Answer :

It is specially used for voip only because it have ports enable on it which allow voip traffic.

Question 14. What Qos Parameters Are Required To Transfers Credential File From One Source To A Destination?

Answer :

The main QoS parameters required is Bandwidth and Data loss.

Question 15. What Does Dns Do In A Network?

Answer :

DNS is domain name server. It is used to translate IP into domain name and vice versa

Question 16. What Is The Purpose Or Http Protocol?

Answer :

It is used to transfer data or files over internet.

Question 17. At Which Layer Hub Work?

Answer :

Hub works at physical layer.

Question 18. Home Many Types Of Rip Messages?

Answer :

There are two type of RIP messages, these are request and respond.

Question 19. At Which Layer Of Internet Protocol Suite, Icmp Work?

Answer :

It works at internet layer

Question 20. Which Protocol Does Rip Use To Transport Data?

Answer :

RIP use UDP

Question 21. At Which Layer Sip Protocol Work?

Answer :

SIP work at Application layer of OSI.

Question 22. Is Rip V2 Is Link State Protocol?

Answer :

No, it is distance vector protocol

Question 23. At Which Layer Of Osi Does Tcp/ip Work?

Answer :

TCP/IP is two protocols. IP work at layer 3 and TCP at layer 4

Question 24. At Which Layer Of Osi Does Tcp Work?

Answer :

It works at transport layer

Question 25. Sw_a Revision Number 22. You Have Made 2 Vlans One By One And 3 Vlans In One Command, What Will Be The Final Revision Number?

Answer :

The final revision number is 25.

Question 26. What Is Private Vlan Used For?

Answer :

Private vlan is a concept in vlan you can have vlans in a single vlan. It is used in where hundreds of vlans are configured. You only need to make one vlan and all other vlans in this vlan.

Question 27. When You Are Configuring Virtual Link, Which Router Will Be Configured?

Answer :

The configuration is between ABRs router

Question 28. What Is A Core Network?

Answer :

A core network is where the entire main network lives. Without core network, the whole network cannot be run. All routers and switches are connected to their core network.

Question 29. What Is Access Layer In Switching Network?

Answer :

The access layer is said to be the layer in which host are connected with the  switch it is a end layer connected host with the switch. Layer 2 switches are mostly used in access layer.

Question 30. What Is The Difference Between Stp And Rstp?

Answer :

STP is used to prevent switching loop in the switching network, while RSTP is almost same as STP just only one thing which is timing of port forwarding has been reduce to 0.

Question 31. What Is The Total Range Of Multicast Addresses In Ipv4?

Answer :

224-239

Question 32. How Can You Get A Continuous With This Ip On Router 176.9.41.131?

Answer :

Just add –t at the end of the IP… like 176.9.41.131 –t

Question 33. Does Ripv1 Support Classless Routing?

Answer :

RIPv1 does not support classless routing. RIPv2 support classfull and classless routing both.

Question 34. What Is Redistribution?

Answer :

It is a concept by which two different routing protocol can communicate and exchange information with each other

Question 35. Why Would You Use Areas In Bgp Protocols?

Answer :

There is no area concept in BGP protocol.

Question 36. What Will Be The Administrative Distance Of Static Route To The Next Hop?

Answer :

The static route distance will be 1 even with the next hop.

Question 37. What Is The Administrative Distance Of Egp?

Answer :

The administrative distance for EGP is 140.

Question 38. What Will Be The Administrative Distance Of Directly Connected Two Interfaces With Router?

Answer :

It will be zero

Question 39. What Will Be The Net Mask For The 176.9.59.4/16?

Answer :

255.255.0.0

Question 40. What Will Be The Wildcard Address For 176.9.120.142/24?

Answer :

0.0.0.225

Question 41. Which Tcp Port Does Bgp Used To Establish Connection Between Routers?

Answer :

BGP use 179 port o TCP.

Question 42. How Many Flavor Of Bgp Are?

Answer :

There are two flavors of BGP, EGP and IGP

Question 43. What Is Synchronization?

Answer :

It is said to be the property of IBGP.

Question 44. In Bgp, What Is The Purpose Of As_path Attribute?

Answer :

If a route has more than one route to the same IP prefix, the best path is the one with the shortest AS_PATH

Question 45. What Is The Purpose Of Weight Attribute On Ospf?

Answer :

There is no attribute such as WEIGHT in OSPF