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 are two OSPF authentication methods?
Plaintext and MD5
TRUE
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Updates all DROTHER Routers when a change occurs


2. With OSPF - there must always be a area......
2^n
0
1.) Enter the Routing Manually 2.) Use Dymamic Routing
For line vty 0 4


3. How often are periodic updates sent out via RIP
Designated Router (DR) and a Back-up designated Router (BDR)
Six equal cost paths
4
Every 30 Seconds


4. The AS number must what?
15.....16 hops and the interface is down
4
Match on all routers or it will not work
Select the routing protocol - then specify the network.


5. Spanning-Tree cost of 100
224.0.0.10
Inter-VLAN routing
10Mb/s
Every 30 minutes by default


6. What address is FE80:/10
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Private: link local
2^n-2
IP


7. Break down the word Link-State

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8. Dynamic ACL's are dependent on what?
Determines the cost which is the bandwidth
IP
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Telnet connectivity - authentication and extended ACLs


9. In regards to ACL's What are the three protocols?
1Gb/s
One ACL per protocol - One ACL per direction - Once ACL per interface
Match on all routers or it will not work
The inverse of a subnet mask.


10. What is the dead interval
The inverse of a subnet mask.
1Gb/s
30-50 seconds
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.


11. How does a Standard ACL work?
A link is an interface on a router
Checks the source address and then permits or denies the entire protocol suite
Aka Subnet mask
4


12. How often are LMI's sent out?
Every 10 Seconds
Not scalable - hard to maintain as the network grows
Select the routing protocol - then specify the network.
Port based


13. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
Scalable and fast convergence
Every 30 Seconds
A protocol on how to communicate with other routers


14. What is the multicast address for EIGRP?
30-50 seconds
Checks the source and destination address then permits or denies specific protocols
It is never useful to send information about a route back in the direction from which the original info came.
224.0.0.10


15. What type of algorithm does EIGRP use?
Every 5 seconds
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Select the routing protocol - then specify the network.
Advance Distance Vector


16. Explain OSPF

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17. An OSPF neighbor relationship can also be called what?
10Mb/s
DROTHER
Adjacency
Area Border Router


18. Admin distance of a Static Route?
4 times the hello interval
Convergence
Private: link local
1


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

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20. What is needed to pass traffic from one VLAN to another?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
A layer 3 switch or router
The inverse of a subnet mask.
Plaintext and MD5


21. In Link state terminology - What is a link?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
A link is an interface on a router
It is never useful to send information about a route back in the direction from which the original info came.
2^n-2


22. OSPF routes packets within a single?
Autonomous System
A group of end stations with a common set of requirements - independent of their physical location
A combination of Link-state and distance vector
Aka Subnet mask


23. VTP Transparent Mode does what?

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24. What is one to nearest
Anycast
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Automatically
Aka Subnet mask


25. With OSPF - what must be defined?
The information regarding that link. This can include the router's IP address - the type of network - the cost of the link - and if there are any neighboring routers on that link.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
A backbone area...Also known as Area 0
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.


26. A router running EIGRP will store what?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
0
All backup routes for destinations.
Advance Distance Vector


27. What are non designated routers called?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
The Diffusing Update Algorithm (DUAL)
Connects the different areas
DROTHER


28. What is an Autonomous System?
A trunk
The information regarding that link. This can include the router's IP address - the type of network - the cost of the link - and if there are any neighboring routers on that link.
Match on all routers or it will not work
...


29. How does an Extended ACL work?
View
Checks the source and destination address then permits or denies specific protocols
To select the best path to the destination
Dijkstra's Algorithm


30. Admin distance of RIPv2
Disable auto summarization
2^n
120
All backup routes for destinations.


31. When do you use Access-Class
For line vty 0 4
Cisco - ANSI - Q.933A
Distance Vector
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.


32. Admin distance of a connected Network?
Match on all routers or it will not work
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
0
View


33. What type of algorithm does RIP use?
Every 30 minutes by default
Checks the source and destination address then permits or denies specific protocols
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Distance Vector


34. Rip is capable of load balancing over as many as?
Six equal cost paths
Autonomous System
4
Bandwidth & Delay


35. How does EIGRP work with regards to Load Balancing
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Data Link Connection Identifier
Area Border Router
Supports both unequal metric load balancing and equal metric balancing.


36. How often are OSPF hello packets sent out?
MAC based
Every 10 seconds
Multiple virtual interfaces that are associated with one physical interface
Checks the source address and then permits or denies the entire protocol suite


37. What do you need to do if there are discontigous networks with EIGRP?
Link-State
Disable auto summarization
The Diffusing Update Algorithm (DUAL)
It is never useful to send information about a route back in the direction from which the original info came.


38. What are the major components of OSPF troubleshooting?
Link-State
4 times the hello interval
Updates all DROTHER Routers when a change occurs
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication


39. Why is this done?
To reduce OSPF traffic
View
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
10Mb/s


40. When placing ACL's in the Network...Do what?

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41. How long is the dead interval
224.0.0.10
Forces protocols to behave as if they were classless
Plaintext and MD5
4 times the hello interval


42. How often does EIGRP send hellow packets?
Every 5 seconds
224.0.0.10
Determines the cost which is the bandwidth
Supports both unequal metric load balancing and equal metric balancing.


43. How do you configure a sub interface?
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
DROTHER
Packet Header
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.


44. Explain how routing loops occur with RIP?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Null
...
Propagation of partial updates that are sent only to those routers that the changes affect.


45. Routing protocol is what?
30-50 seconds
A protocol on how to communicate with other routers
The inverse of a subnet mask.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers


46. What is Frame Relay?
224.0.0.5
All backup routes for destinations.
Advance Distance Vector
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.


47. Nonbackbone - internal routers are aware of what topology
The inverse of a subnet mask.
Plaintext and MD5
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Only topology within their respective area.


48. How often does a router send link-state advertisements?
20 seconds: 10 missed BPDU's
Every 10 Seconds
Every 30 minutes by default
Plaintext and MD5


49. What is the default Bridge priority?
15.....16 hops and the interface is down
32768
A trunk
Packet Header


50. The no auto-summary command does what?
Forces protocols to behave as if they were classless
The information regarding that link. This can include the router's IP address - the type of network - the cost of the link - and if there are any neighboring routers on that link.
Test Firsts/ Routes Second
4