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 an Autonomous System?
TRUE
Six equal cost paths
...
Bandwidth & Delay


2. By default OSPF uses what type of authentication?
Null
DROTHER
Associating the network address with a local DLCI.
2^n-2


3. When do you use Access-Class
A combination of Link-state and distance vector
Unicast - Multicast - Anycast
...
For line vty 0 4


4. How is the root bridge determined?
The Root bridge is the bridge with the lowest bridge ID
Every 10 Seconds
A link is an interface on a router
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers


5. What is a VLAN
The lower MAC address
A group of end stations with a common set of requirements - independent of their physical location
A combination of Link-state and distance vector
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


6. What algorithm does EIGRP use?
Match on all routers or it will not work
The Diffusing Update Algorithm (DUAL)
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
Telnet connectivity - authentication and extended ACLs


7. How do you configure a sub interface?
Reduce the link-state database and routing table
20 seconds: 10 missed BPDU's
Convergence
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


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


9. Summarization of network information usually occurs where?
A layer 3 switch or router
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
DROTHER
Between areas?


10. What does a trunk do?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


11. How long is the dead interval
4 times the hello interval
Supports both unequal metric load balancing and equal metric balancing.
Unicast - Multicast - Anycast
32768


12. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Updates all DROTHER Routers when a change occurs
10Mb/s
TRUE
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.


13. What two classless protocols act classful by default?
Data Link Connection Identifier
RIPv2 & EIGRP
Only topology within their respective area.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers


14. What is needed to pass traffic from one VLAN to another?
It combines the advantages of Link-State and Distance vector routing protocols.
Every 30 minutes by default
4
A layer 3 switch or router


15. Example of a Routing Protocol?
Between areas?
EIGRP - OSPF - RIP
IP
Only topology within their respective area.


16. OSPF will elect a what?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
It combines the advantages of Link-State and Distance vector routing protocols.
Designated Router (DR) and a Back-up designated Router (BDR)
Packet Header


17. What are non designated routers called?
To select the best path to the destination
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
One ACL per protocol - One ACL per direction - Once ACL per interface
DROTHER


18. Break down the word Link-State

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


19. With ACL's where does the router extract information
Autonomous System
Packet Header
Between areas?
90


20. Spanning-Tree cost of 100
10Mb/s
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
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.
224.0.0.5


21. Rip is capable of load balancing over as many as?
4 times the hello interval
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.
Advance Distance Vector
Six equal cost paths


22. VTP Client Mode does what?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


23. What two things need to be done to enable dynamic routing?
1Gb/s
Select the routing protocol - then specify the network.
The Root bridge is the bridge with the lowest bridge ID
Propagation of partial updates that are sent only to those routers that the changes affect.


24. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
0
For line vty 0 4
View


25. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
View
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Scalable and fast convergence
16


26. What is prefix length?
2^n
The update only includes info about the route change
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Aka Subnet mask


27. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
...
DROTHER
Only with Cisco IOS software release 12.3 (2) T
The lower MAC address


28. What are the three LMI standards
The Diffusing Update Algorithm (DUAL)
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Susceptible to routing loops
Cisco - ANSI - Q.933A


29. Who designed OSPF?
IETF
Not scalable - hard to maintain as the network grows
Private: link local
...


30. Problem with RIP
Individual or group IP's
...
4
Susceptible to routing loops


31. What does the DR do?
Updates all DROTHER Routers when a change occurs
Autonomous System
Advance Distance Vector
RIPv2 and EIGRP


32. Can you delete individual entries in a specific ACL?
Link-State
Only with Cisco IOS software release 12.3 (2) T
Routes First/ Tests second
View


33. Admin distance of EIGRP?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
90
Every 10 Seconds
Multiple virtual interfaces that are associated with one physical interface


34. Admin distance of OSPF?
Maximizing address efficiency - organization - summarization
110
20 seconds: 10 missed BPDU's
A group of end stations with a common set of requirements - independent of their physical location


35. How often are BPDU's sent?
Ever 2 seconds
Port based
It is never useful to send information about a route back in the direction from which the original info came.
Automatically


36. Wildcard masks filter

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


37. For a VLAN to span across multiple switches What is required?
2^n-2
A trunk
Only topology within their respective area.
Every 30 Seconds


38. Problem with static routes
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Not scalable - hard to maintain as the network grows
Between areas?


39. How does a Standard ACL work?
No
Updates all DROTHER Routers when a change occurs
Checks the source address and then permits or denies the entire protocol suite
Reduce the link-state database and routing table


40. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
Packet Header
The inverse of a subnet mask.
Packets are processed before they are routed to an outbound interface.


41. How many hops are allowed with RIP?
15.....16 hops and the interface is down
A backbone area...Also known as Area 0
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Propagation of partial updates that are sent only to those routers that the changes affect.


42. Admin distance of a Static Route?
4
1
32768
Different Autonomous Systems


43. How does an outbound ACL work?
...
Routes First/ Tests second
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
For line vty 0 4


44. How does Link-State work?
0
No
Each router builds a map of the network and determines the shortest path to every network.
1.) Enter the Routing Manually 2.) Use Dymamic Routing


45. Benefits of OSPF?
By DLCI's
Scalable and fast convergence
Designated Router (DR) and a Back-up designated Router (BDR)
Different Autonomous Systems


46. What is the Wildcard mask
Area Border Router
Loopback
The inverse of a subnet mask.
2^n-2


47. What is one to nearest
IETF
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
View
Anycast


48. In regards to troubleshooting OSPF what should you check?
Dijkstra's Algorithm
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
90
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.


49. How do you apply the ACL to an interface
Make sure you are in interface mode - then use this command ip access-group 1 out/in
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.
Multicast
IETF


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183