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. With OSPF - what must be defined?
1Gb/s
Only with Cisco IOS software release 12.3 (2) T
Advance Distance Vector
A backbone area...Also known as Area 0


2. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
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
15.....16 hops and the interface is down
Only with Cisco IOS software release 12.3 (2) T
View


3. Every ACL will need what?
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.
20 seconds: 10 missed BPDU's
A permit statement
224.0.0.10


4. What is needed to pass traffic from one VLAN to another?
Autonomous System
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Every 5 seconds
A layer 3 switch or router


5. How does inbound ACL work?
It is never useful to send information about a route back in the direction from which the original info came.
Unspecified
Telnet connectivity - authentication and extended ACLs
Test Firsts/ Routes Second


6. What are the three LMI standards
No
Convergence
Cisco - ANSI - Q.933A
Maximizing address efficiency - organization - summarization


7. In regards to ACL's What are the three protocols?
Domain
One ACL per protocol - One ACL per direction - Once ACL per interface
It is the signaling standard that maintains connection and statues between the DCE and DTE
90


8. An autonomous system could also be referred to as what?
One ACL per protocol - One ACL per direction - Once ACL per interface
Unspecified
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Domain


9. The no auto-summary command does what?
Area Border Router
Checks the source and destination address then permits or denies specific protocols
Forces protocols to behave as if they were classless
Every 30 minutes by default


10. Describe a Inbound ACL
224.0.0.10
Layers 1 & 2
4
Packets are processed before they are routed to an outbound interface.


11. Why is this done?
View
Unicast - Multicast - Anycast
To reduce OSPF traffic
Loopback


12. Wildcard masks filter


13. What are the major components of OSPF troubleshooting?
Adjacency
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
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.


14. What does EIGRP use to calculate it's metric?
Bandwidth & Delay
Unspecified
Aka Subnet mask
View


15. Classful Protocols summarize
Automatically
The inverse of a subnet mask.
Convergence
TRUE


16. How often does a router send link-state advertisements?
Link-State
10Mb/s
Every 30 minutes by default
Convergence


17. Dynamic VLAN is what?
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
Between areas?
The inverse of a subnet mask.
MAC based


18. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Advance Distance Vector
Loopback
Telnet connectivity - authentication and extended ACLs
The lower MAC address


19. Describe features of RIPv1
For line vty 0 4
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Packets are processed before they are routed to an outbound interface.
Unicast - Multicast - Anycast


20. In regards to troubleshooting OSPF what should you check?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Every 30 Seconds
110
The Diffusing Update Algorithm (DUAL)


21. What are two OSPF authentication methods?
10Mb/s
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Checks the source and destination address then permits or denies specific protocols
Plaintext and MD5


22. How is the root bridge determined?
The Root bridge is the bridge with the lowest bridge ID
90
A layer 3 switch or router
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.


23. What is one to many?
Multicast
Each router builds a map of the network and determines the shortest path to every network.
IETF
Advance Distance Vector


24. By default OSPF uses what type of authentication?
View
Checks the source address and then permits or denies the entire protocol suite
Null
Not scalable - hard to maintain as the network grows


25. In Link state terminology - What is a link?
A link is an interface on a router
Propagation of partial updates that are sent only to those routers that the changes affect.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Distance Vector


26. Dynamic ACL's are dependent on what?
Autonomous System
Telnet connectivity - authentication and extended ACLs
Loopback
Domain


27. Spanning-Tree cost of 19
Different Autonomous Systems
100Mb/s
Every 30 Seconds
Loopback


28. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Data Link Connection Identifier
Updates all DROTHER Routers when a change occurs
Connects the different areas


29. What three types of IPv6 address types are there?
Dijkstra's Algorithm
Bandwidth & Delay
Supports both unequal metric load balancing and equal metric balancing.
Unicast - Multicast - Anycast


30. Purpose of a Routing Protocol?
Link-State
Inter-VLAN routing
Private: link local
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


31. What does DLCI stand for?
Domain
Data Link Connection Identifier
DROTHER
1Gb/s


32. How do you configure a sub interface?
Anycast
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
Because a loopback interface is always active and cannot be in a down state like a real interface can.
View


33. With ACL's where does the router extract information
Forces protocols to behave as if they were classless
Packet Header
It is never useful to send information about a route back in the direction from which the original info came.
0


34. How does an outbound ACL work?
Supports both unequal metric load balancing and equal metric balancing.
Routes First/ Tests second
2^n
Select the routing protocol - then specify the network.


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


36. Nonbackbone - internal routers are aware of what topology
Null
Select the routing protocol - then specify the network.
A backbone area...Also known as Area 0
Only topology within their respective area.


37. VTP Transparent Mode does what?


38. When do you use Access-Class
For line vty 0 4
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Area Border Router
The Diffusing Update Algorithm (DUAL)


39. How do you configure OSPF
The Root bridge is the bridge with the lowest bridge ID
Disable auto summarization
Unicast - Multicast - Anycast
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0


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


41. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Private: link local
Not scalable - hard to maintain as the network grows
TRUE
Domain


42. What is prefix length?
Domain
To reduce OSPF traffic
Aka Subnet mask
Not scalable - hard to maintain as the network grows


43. Formula for determining hosts
Automatically
For line vty 0 4
Between areas?
2^n-2


44. OSPF routes packets within a single?
Packets are processed before they are routed to an outbound interface.
Bandwidth & Delay
Autonomous System
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


45. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
To reduce OSPF traffic
Determines the cost which is the bandwidth
Multiple virtual interfaces that are associated with one physical interface


46. What type of algorithm does EIGRP use?
20 seconds: 10 missed BPDU's
Advance Distance Vector
Domain
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication


47. What is a VLAN
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
A group of end stations with a common set of requirements - independent of their physical location
Advance Distance Vector
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs


48. What is the multicast address for EIGRP?
224.0.0.10
4 times the hello interval
Unicast - Multicast - Anycast
The lower MAC address


49. Why is EIGRP considered a Hybrid routing protocol?
Select the routing protocol - then specify the network.
The Root bridge is the bridge with the lowest bridge ID
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
It combines the advantages of Link-State and Distance vector routing protocols.


50. What type of algorithm does OSPF & IS-IS use?
Link-State
Null
The Diffusing Update Algorithm (DUAL)
Connects the different areas