Test your basic knowledge |

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?
Advertised Distance & Feasible distance
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
RIPv2 and EIGRP
...

2. The time delay for a router to match a network change?
Convergence
It combines the advantages of Link-State and Distance vector routing protocols.
Multicast
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

3. Describe features of RIPv1
Anycast
Loopback
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

4. What is the spilt horizon rule?
No
A combination of Link-state and distance vector
It is never useful to send information about a route back in the direction from which the original info came.
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

5. 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
224.0.0.10
Match on all routers or it will not work
A protocol on how to communicate with other routers

6. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
By DLCI's
The Diffusing Update Algorithm (DUAL)
Automatically
TRUE

7. Describe a Inbound ACL
Packets are processed before they are routed to an outbound interface.
Aka Subnet mask
RIPv2 & EIGRP
Disable auto summarization

8. What type of algorithm does EIGRP use?
DROTHER
To select the best path to the destination
Advance Distance Vector
20 seconds: 10 missed BPDU's

9. Rip is capable of load balancing over as many as?
Plaintext and MD5
Six equal cost paths
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
224.0.0.10

10. What Layer does Frame Relay operate at?
Connects the different areas
To reduce OSPF traffic
Checks the source address and then permits or denies the entire protocol suite
Layers 1 & 2

11. What is prefix length?
Propagation of partial updates that are sent only to those routers that the changes affect.
Susceptible to routing loops
Every 30 minutes by default
Aka Subnet mask

12. VTP Server Mode does what?

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

13. Dynamic VLAN is what?
MAC based
Aka Subnet mask
Unspecified
The update only includes info about the route change

14. How do you configure OSPF
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Anycast
Determines the cost which is the bandwidth
Forces protocols to behave as if they were classless

15. Classful Protocols summarize
Propagation of partial updates that are sent only to those routers that the changes affect.
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
120
Automatically

16. The no auto-summary command does what?
224.0.0.10
Forces protocols to behave as if they were classless
TRUE
Not scalable - hard to maintain as the network grows

17. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
It combines the advantages of Link-State and Distance vector routing protocols.
The lower MAC address
It is never useful to send information about a route back in the direction from which the original info came.

18. What are non designated routers called?
Null
DROTHER
Ever 2 seconds
1.) Enter the Routing Manually 2.) Use Dymamic Routing

19. Static VLAN is what?
TRUE
Dijkstra's Algorithm
Port based
IP

20. With OSPF - there must always be a area......
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Every 30 minutes by default
0
110

21. How often does a router send link-state advertisements?
Data Link Connection Identifier
Updates all DROTHER Routers when a change occurs
Every 30 minutes by default
Determines the cost which is the bandwidth

22. How does inbound ACL work?
20 seconds: 10 missed BPDU's
The lower MAC address
Test Firsts/ Routes Second
Cisco - ANSI - Q.933A

23. VTP Client Mode does what?

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

24. Advance Distance Vector or Hybrid uses what?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
A combination of Link-state and distance vector
IP
A group of end stations with a common set of requirements - independent of their physical location

25. Summarization of network information usually occurs where?
Plaintext and MD5
Ever 2 seconds
Every 30 Seconds
Between areas?

26. What does a trunk do?

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

27. What two parameters does EIGRP use to determine the best route?
The update only includes info about the route change
By DLCI's
All backup routes for destinations.
Advertised Distance & Feasible distance

28. Can a Router exchange routing information if they are using different Routing Protocols?
No
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Advertised Distance & Feasible distance
Telnet connectivity - authentication and extended ACLs

29. What is the dead interval
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
RIPv2 & EIGRP
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Between areas?

30. Spanning-Tree cost of 100
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
10Mb/s
Multicast

31. Why is it important to have a loopback address when using OSPF?
Data Link Connection Identifier
110
Because a loopback interface is always active and cannot be in a down state like a real interface can.
To select the best path to the destination

32. A router running EIGRP will store what?
Loopback
2^n-2
Disable auto summarization
All backup routes for destinations.

33. What is the multicast address for EIGRP?
224.0.0.10
Cisco - ANSI - Q.933A
Convergence
Maximizing address efficiency - organization - summarization

34. Admin distance of a connected Network?
20 seconds: 10 missed BPDU's
Area Border Router
0
One ACL per protocol - One ACL per direction - Once ACL per interface

35. What does partial refer to?
Packet Header
For line vty 0 4
The update only includes info about the route change
TRUE

36. What is the default load balancing for RIP
Loopback
Autonomous System
4
Distance Vector

37. Formula for determining Subnets
...
Private: link local
2^n
Ever 2 seconds

38. Describe an Outbound ACL
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Plaintext and MD5
The inverse of a subnet mask.
Convergence

39. For a VLAN to span across multiple switches What is required?
Cisco - ANSI - Q.933A
A trunk
One ACL per protocol - One ACL per direction - Once ACL per interface
Associating the network address with a local DLCI.

40. What two classless protocols act classful by default?
The inverse of a subnet mask.
RIPv2 & EIGRP
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Multicast

41. How do you configure a sub interface?
Not scalable - hard to maintain as the network grows
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
Cisco - ANSI - Q.933A
Connects the different areas

42. How is the root bridge determined?
Loopback
2^n-2
Determines the cost which is the bandwidth
The Root bridge is the bridge with the lowest bridge ID

43. 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
20 seconds: 10 missed BPDU's
Link-State
Updates all DROTHER Routers when a change occurs

44. What are subinterfaces?
Match on all routers or it will not work
Multiple virtual interfaces that are associated with one physical interface
The Diffusing Update Algorithm (DUAL)
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

45. What are two OSPF authentication methods?
Plaintext and MD5
Every 10 Seconds
To select the best path to the destination
Packets are processed before they are routed to an outbound interface.

46. With ACL's where does the router extract information
Packet Header
A layer 3 switch or router
RIPv2 & EIGRP
10Mb/s

47. Admin distance of OSPF?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
All backup routes for destinations.
110
Only with Cisco IOS software release 12.3 (2) T

48. How does the SPF determine the shortest path?
Determines the cost which is the bandwidth
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.
Carry's traffic for multiple VLANS

49. How are Frame Relay Circuits identified?

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

50. What type of authentication does EIGRP use?
Bandwidth & Delay
MD5 and you have to enable it if you want to use it.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Connects the different areas