CCNA

Instructions:

• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. How often are LMI's sent out?
Every 10 Seconds
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Every 30 Seconds
Determines the cost which is the bandwidth


2. What is the default Bridge priority?
Unspecified
Disable auto summarization
32768
A group of end stations with a common set of requirements - independent of their physical location


3. Wildcard masks filter

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4. Explain OSPF

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5. The advantages of VLSM
Maximizing address efficiency - organization - summarization
Advertised Distance & Feasible distance
By DLCI's
Area Border Router


6. What algorithm does EIGRP use?
The Diffusing Update Algorithm (DUAL)
Layers 1 & 2
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Autonomous System


7. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
2^n
Associating the network address with a local DLCI.
Inter-VLAN routing


8. Admin distance of OSPF?
4
110
15.....16 hops and the interface is down
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


9. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Checks the source and destination address then permits or denies specific protocols
DROTHER
Layers 1 & 2


10. How often are BPDU's sent?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Ever 2 seconds
Every 30 Seconds
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


11. Example of a Routed Protocol?
A link is an interface on a router
IP
Domain
To reduce OSPF traffic


12. In Link state terminology - What is a link?

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13. Spanning-Tree coast of 4
A protocol on how to communicate with other routers
Match on all routers or it will not work
2^n
1Gb/s


14. What is one to many?
Designated Router (DR) and a Back-up designated Router (BDR)
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Multicast


15. What is needed to pass traffic from one VLAN to another?
IETF
Dijkstra's Algorithm
View
A layer 3 switch or router


16. What are the major components of OSPF troubleshooting?
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Not scalable - hard to maintain as the network grows
Ever 2 seconds


17. With OSPF - there must always be a area......
Scalable and fast convergence
0
It combines the advantages of Link-State and Distance vector routing protocols.
By DLCI's


18. What two classless protocols act classful by default?
RIPv2 & EIGRP
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A protocol on how to communicate with other routers
Advertised Distance & Feasible distance


19. What is the Wildcard mask
The inverse of a subnet mask.
DROTHER
Layers 1 & 2
Only with Cisco IOS software release 12.3 (2) T


20. VTP Transparent Mode does what?

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21. How are Frame Relay Circuits identified?

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22. Dynamic VLAN is what?
MAC based
Multiple virtual interfaces that are associated with one physical interface
Test Firsts/ Routes Second
120


23. For a VLAN to span across multiple switches What is required?
Susceptible to routing loops
A permit statement
A trunk
Designated Router (DR) and a Back-up designated Router (BDR)


24. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
16
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface
120


25. What is ::
Only with Cisco IOS software release 12.3 (2) T
View
DROTHER
Unspecified


26. Routers are used for what?
EIGRP - OSPF - RIP
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
To select the best path to the destination
Advertised Distance & Feasible distance


27. What is Frame Relay?
Match on all routers or it will not work
A link is an interface on a router
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Advertised Distance & Feasible distance


28. How do you configure OSPF
IETF
0
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Null


29. Describe features of RIPv2
10Mb/s
Plaintext and MD5
R= Rip protocol; You can reach network 192.168.1.0 in two hops. The 120 is the admin distance and the 2 is the metric (hop). and it can be reached via the 10.1.1.2 network.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication


30. What does DLCI stand for?
1
15.....16 hops and the interface is down
A backbone area...Also known as Area 0
Data Link Connection Identifier


31. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
To select the best path to the destination
Autonomous System
The lower MAC address
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.


32. VTP Client Mode does what?

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33. In regards to ACL's What are the three protocols?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Distance Vector
One ACL per protocol - One ACL per direction - Once ACL per interface
Port based


34. Why is it important to have a loopback address when using OSPF?
Match on all routers or it will not work
RIPv2 & EIGRP
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Every 30 Seconds


35. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Because a loopback interface is always active and cannot be in a down state like a real interface can.
MD5 and you have to enable it if you want to use it.
R= Rip protocol; You can reach network 192.168.1.0 in two hops. The 120 is the admin distance and the 2 is the metric (hop). and it can be reached via the 10.1.1.2 network.
Cisco - ANSI - Q.933A


36. Who designed OSPF?
A protocol on how to communicate with other routers
IETF
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 30 Seconds


37. What does EIGRP use to calculate it's metric?
IP
Bandwidth & Delay
Match on all routers or it will not work
100Mb/s


38. OSPF will elect a what?
120
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Designated Router (DR) and a Back-up designated Router (BDR)
Every 5 seconds


39. Example of a Routing Protocol?
Each router builds a map of the network and determines the shortest path to every network.
Port based
One ACL per protocol - One ACL per direction - Once ACL per interface
EIGRP - OSPF - RIP


40. Every ACL will need what?
Unspecified
Associating the network address with a local DLCI.
A permit statement
Only topology within their respective area.


41. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
...
A group of end stations with a common set of requirements - independent of their physical location
RIPv2 & EIGRP


42. What is OSPF multicast address?
224.0.0.5
Bandwidth & Delay
To select the best path to the destination
Packets are processed before they are routed to an outbound interface.


43. How often does a router send link-state advertisements?
Private: link local
Only topology within their respective area.
Every 30 minutes by default
Loopback


44. What is an Autonomous System?
Inter-VLAN routing
...
Autonomous System
Associating the network address with a local DLCI.


45. How often are OSPF hello packets sent out?
Every 10 seconds
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
20 seconds: 10 missed BPDU's
Only topology within their respective area.


46. The time delay for a router to match a network change?
...
Convergence
10Mb/s
120


47. How often are periodic updates sent out via RIP
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Unicast - Multicast - Anycast
Ever 2 seconds
Every 30 Seconds


48. What do area's do?
A combination of Link-state and distance vector
The inverse of a subnet mask.
Reduce the link-state database and routing table
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface


49. How does EIGRP work with regards to Load Balancing
TRUE
Supports both unequal metric load balancing and equal metric balancing.
Packet Header
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


50. Spanning-Tree cost of 19
A group of end stations with a common set of requirements - independent of their physical location
Different Autonomous Systems
100Mb/s
Advance Distance Vector