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. What does bounded refer to?
Data Link Connection Identifier
Propagation of partial updates that are sent only to those routers that the changes affect.
Telnet connectivity - authentication and extended ACLs
A trunk


2. What are the two ways routers can learn about the destination information?
...
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Determines the cost which is the bandwidth
Every 30 Seconds


3. How long is the dead interval
Designated Router (DR) and a Back-up designated Router (BDR)
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
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.
4 times the hello interval


4. VTP Transparent Mode does what?

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5. What type of algorithm does RIP use?
Multiple virtual interfaces that are associated with one physical interface
224.0.0.10
Distance Vector
A permit statement


6. For a VLAN to span across multiple switches What is required?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Plaintext and MD5
A trunk
Individual or group IP's


7. What is the multicast address for EIGRP?
224.0.0.10
Disable auto summarization
The Diffusing Update Algorithm (DUAL)
Test Firsts/ Routes Second


8. What is passing VLAN traffic to another called?
Inter-VLAN routing
Associating the network address with a local DLCI.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication


9. What does the DR do?
Every 5 seconds
A trunk
224.0.0.10
Updates all DROTHER Routers when a change occurs


10. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
TRUE
32768
Maximizing address efficiency - organization - summarization


11. How do you apply the ACL to an interface
Unspecified
Cisco - ANSI - Q.933A
120
Make sure you are in interface mode - then use this command ip access-group 1 out/in


12. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
Link-State
1Gb/s
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


13. What is the Wildcard mask
The inverse of a subnet mask.
A protocol on how to communicate with other routers
224.0.0.5
Every 30 minutes by default


14. What are subinterfaces?
Advance Distance Vector
Multiple virtual interfaces that are associated with one physical interface
A layer 3 switch or router
Between areas?


15. With OSPF - there must always be a area......
0
Reduce the link-state database and routing table
Scalable and fast convergence
Only topology within their respective area.


16. Explain OSPF

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17. How do you configure OSPF
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
2^n
All backup routes for destinations.


18. Spanning-Tree cost of 19
A permit statement
Area Border Router
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
100Mb/s


19. Break down the word Link-State

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20. What is Frame Relay?
Cisco - ANSI - Q.933A
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Packet Header
Determines the cost which is the bandwidth


21. Every ACL will need what?
Connects the different areas
Cisco - ANSI - Q.933A
Match on all routers or it will not work
A permit statement


22. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
The lower MAC address
Individual or group IP's
Determines the cost which is the bandwidth
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0


23. What does EIGRP use to calculate it's metric?
It combines the advantages of Link-State and Distance vector routing protocols.
30-50 seconds
MD5 and you have to enable it if you want to use it.
Bandwidth & Delay


24. What three types of IPv6 address types are there?
A permit statement
Unicast - Multicast - Anycast
TRUE
110


25. How does the SPF determine the shortest path?
Determines the cost which is the bandwidth
...
It is the signaling standard that maintains connection and statues between the DCE and DTE
Routes First/ Tests second


26. What is the default Bridge priority?
Carry's traffic for multiple VLANS
Loopback
A layer 3 switch or router
32768


27. How does EIGRP work with regards to Load Balancing
Convergence
2^n
Supports both unequal metric load balancing and equal metric balancing.
Dijkstra's Algorithm


28. Normal time for STP convergence
Autonomous System
Null
30-50 seconds
To select the best path to the destination


29. By default OSPF uses what type of authentication?
A group of end stations with a common set of requirements - independent of their physical location
The update only includes info about the route change
Null
Inter-VLAN routing


30. Spanning-Tree cost of 100
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A combination of Link-state and distance vector
Different Autonomous Systems
10Mb/s


31. VTP Client Mode does what?

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32. Describe a Inbound ACL
Null
A combination of Link-state and distance vector
Packets are processed before they are routed to an outbound interface.
Designated Router (DR) and a Back-up designated Router (BDR)


33. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
Six equal cost paths
Each router builds a map of the network and determines the shortest path to every network.
Area Border Router


34. The advantages of VLSM
Maximizing address efficiency - organization - summarization
It is never useful to send information about a route back in the direction from which the original info came.
To select the best path to the destination
Checks the source and destination address then permits or denies specific protocols


35. What is the Shortest Path First algorithm also called?

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36. OSPF routes packets within a single?
Advertised Distance & Feasible distance
Autonomous System
Checks the source address and then permits or denies the entire protocol suite
...


37. Admin distance of OSPF?
15.....16 hops and the interface is down
110
224.0.0.5
Because a loopback interface is always active and cannot be in a down state like a real interface can.


38. Why is it important to have a loopback address when using OSPF?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Because a loopback interface is always active and cannot be in a down state like a real interface can.
A trunk
Only with Cisco IOS software release 12.3 (2) T


39. Purpose of a Routing Protocol?
Only topology within their respective area.
4
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.


40. What is ::
4
Unspecified
Bandwidth & Delay
10Mb/s


41. Can a Router exchange routing information if they are using different Routing Protocols?
Every 30 minutes by default
No
Only with Cisco IOS software release 12.3 (2) T
Dijkstra's Algorithm


42. Benefits of OSPF?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Advance Distance Vector
Propagation of partial updates that are sent only to those routers that the changes affect.
Scalable and fast convergence


43. What is one to many?
A layer 3 switch or router
A protocol on how to communicate with other routers
Multicast
The Diffusing Update Algorithm (DUAL)


44. What algorithm does EIGRP use?
The Diffusing Update Algorithm (DUAL)
...
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.


45. Classful Protocols summarize
Routes First/ Tests second
Every 10 seconds
Automatically
Maximizing address efficiency - organization - summarization


46. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
Anycast
Data Link Connection Identifier
A group of end stations with a common set of requirements - independent of their physical location


47. In Link state terminology - What is a link?
Loopback
A link is an interface on a router
Not scalable - hard to maintain as the network grows
DROTHER


48. What are the major components of OSPF troubleshooting?
Bandwidth & Delay
Only topology within their respective area.
By DLCI's
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication


49. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
MAC based
It combines the advantages of Link-State and Distance vector routing protocols.
Scalable and fast convergence


50. Admin distance of a Static Route?
0
1
Advertised Distance & Feasible distance
Domain