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 is the dead interval
Inter-VLAN routing
4
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Bandwidth & Delay


2. Problem with RIP
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
DROTHER
A trunk
Susceptible to routing loops


3. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
0
16
It is never useful to send information about a route back in the direction from which the original info came.
Ever 2 seconds


4. Purpose of a Routing Protocol?
The Diffusing Update Algorithm (DUAL)
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Susceptible to routing loops
Link-State


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

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6. 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
2^n-2
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Propagation of partial updates that are sent only to those routers that the changes affect.


7. Describe features of RIPv1
Convergence
Disable auto summarization
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Null


8. VTP Transparent Mode does what?

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9. What does EIGRP use to calculate it's metric?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
0
Bandwidth & Delay


10. Explain how routing loops occur with RIP?
The lower MAC address
Every 10 Seconds
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
...


11. What is one to many?
Anycast
100Mb/s
4
Multicast


12. Who designed OSPF?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
100Mb/s
IETF
0


13. The AS number must what?
Bandwidth & Delay
1.) Enter the Routing Manually 2.) Use Dymamic Routing
1
Match on all routers or it will not work


14. Admin distance of EIGRP?
Plaintext and MD5
The lower MAC address
Select the routing protocol - then specify the network.
90


15. Describe features of RIPv2
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Reduce the link-state database and routing table
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A group of end stations with a common set of requirements - independent of their physical location


16. Routing protocol is what?
A protocol on how to communicate with other routers
Susceptible to routing loops
For line vty 0 4
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


17. Admin distance of OSPF?
TRUE
110
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.


18. Why is this done?
To reduce OSPF traffic
All backup routes for destinations.
Checks the source address and then permits or denies the entire protocol suite
Port based


19. What is one to nearest
Anycast
Layers 1 & 2
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Different Autonomous Systems


20. What is passing VLAN traffic to another called?
Forces protocols to behave as if they were classless
Data Link Connection Identifier
Inter-VLAN routing
Layers 1 & 2


21. What does bounded refer to?
Propagation of partial updates that are sent only to those routers that the changes affect.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A combination of Link-state and distance vector
Every 30 minutes by default


22. What is the default Bridge priority?
32768
Unspecified
Null
Designated Router (DR) and a Back-up designated Router (BDR)


23. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Susceptible to routing loops
Distance Vector
Because a loopback interface is always active and cannot be in a down state like a real interface can.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


24. By default OSPF uses what type of authentication?
2^n-2
Only topology within their respective area.
Null
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


25. Nonbackbone - internal routers are aware of what topology
Inter-VLAN routing
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
By DLCI's
Only topology within their respective area.


26. In frame relay What is Inverse Arp
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Associating the network address with a local DLCI.
Maximizing address efficiency - organization - summarization
Disable auto summarization


27. Rip is capable of load balancing over as many as?
Area Border Router
Six equal cost paths
110
RIPv2 and EIGRP


28. OSPF routes packets within a single?
Every 10 Seconds
2^n
Autonomous System
4


29. How often are periodic updates sent out via RIP
Every 30 Seconds
4
TRUE
The inverse of a subnet mask.


30. What is prefix length?
Between areas?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Aka Subnet mask
A trunk


31. Normal time for STP convergence
90
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Convergence
30-50 seconds


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

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33. OSPF will elect a what?
The inverse of a subnet mask.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Layers 1 & 2
Designated Router (DR) and a Back-up designated Router (BDR)


34. What two parameters does EIGRP use to determine the best route?
Checks the source address and then permits or denies the entire protocol suite
RIPv2 and EIGRP
Advertised Distance & Feasible distance
For line vty 0 4


35. VTP Client Mode does what?

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36. Spanning-Tree coast of 4
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
1Gb/s
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
4


37. In regards to ACL's What are the three protocols?
One ACL per protocol - One ACL per direction - Once ACL per interface
It combines the advantages of Link-State and Distance vector routing protocols.
Checks the source and destination address then permits or denies specific protocols
Unicast - Multicast - Anycast


38. Dynamic ACL's are dependent on what?
Test Firsts/ Routes Second
DROTHER
Telnet connectivity - authentication and extended ACLs
1Gb/s


39. Static VLAN is what?
DROTHER
It combines the advantages of Link-State and Distance vector routing protocols.
Port based
TRUE


40. How often does a router send link-state advertisements?
Every 30 minutes by default
16
15.....16 hops and the interface is down
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


41. A router running EIGRP will store what?
Every 10 Seconds
All backup routes for destinations.
30-50 seconds
Carry's traffic for multiple VLANS


42. What algorithm does EIGRP use?
Plaintext and MD5
It is the signaling standard that maintains connection and statues between the DCE and DTE
TRUE
The Diffusing Update Algorithm (DUAL)


43. Explain OSPF

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44. How many hops are allowed with RIP?
By DLCI's
15.....16 hops and the interface is down
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Advance Distance Vector


45. How does an Extended ACL work?
A link is an interface on a router
Checks the source and destination address then permits or denies specific protocols
By DLCI's
RIPv2 & EIGRP


46. What are the three LMI standards
Cisco - ANSI - Q.933A
Associating the network address with a local DLCI.
4
No


47. Describe an Outbound ACL
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Every 30 Seconds
A combination of Link-state and distance vector


48. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
90
Forces protocols to behave as if they were classless
Maximizing address efficiency - organization - summarization


49. Admin distance of RIPv2
EIGRP - OSPF - RIP
The inverse of a subnet mask.
120
Propagation of partial updates that are sent only to those routers that the changes affect.


50. How does the SPF determine the shortest path?
Data Link Connection Identifier
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
One ACL per protocol - One ACL per direction - Once ACL per interface
Determines the cost which is the bandwidth