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. How does the SPF determine the shortest path?
Determines the cost which is the bandwidth
No
Advance Distance Vector
A group of end stations with a common set of requirements - independent of their physical location

2. What are non designated routers called?
...
Every 5 seconds
DROTHER
MAC based

3. How often does EIGRP send hellow packets?
Determines the cost which is the bandwidth
Every 5 seconds
RIPv2 & EIGRP
A link is an interface on a router

4. What two things need to be done to enable dynamic 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.
16
Select the routing protocol - then specify the network.
Telnet connectivity - authentication and extended ACLs

5. Max_age time for BPDU's

6. Explain OSPF

7. The AS number must what?
Match on all routers or it will not work
TRUE
EIGRP - OSPF - RIP
16

8. The advantages of VLSM
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.
Maximizing address efficiency - organization - summarization
Multiple virtual interfaces that are associated with one physical interface
Telnet connectivity - authentication and extended ACLs

9. What are the three LMI standards
Layers 1 & 2
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Cisco - ANSI - Q.933A
The Diffusing Update Algorithm (DUAL)

10. What distant vector protocols exhibit classless behavior?
DROTHER
RIPv2 and EIGRP
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.
Plaintext and MD5

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

12. What is ::1
Loopback
Scalable and fast convergence
20 seconds: 10 missed BPDU's
It is the signaling standard that maintains connection and statues between the DCE and DTE

13. How does Link-State work?
Each router builds a map of the network and determines the shortest path to every network.
Aka Subnet mask
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Telnet connectivity - authentication and extended ACLs

14. Routers are used for what?
Propagation of partial updates that are sent only to those routers that the changes affect.
It is the signaling standard that maintains connection and statues between the DCE and DTE
To select the best path to the destination
RIPv2 & EIGRP

15. What is the spilt horizon rule?
224.0.0.5
Six equal cost paths
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
It is never useful to send information about a route back in the direction from which the original info came.

16. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Carry's traffic for multiple VLANS
16
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

17. Rip is capable of load balancing over as many as?
Six equal cost paths
4 times the hello interval
Null
Automatically

18. What does the back bone router do?
The update only includes info about the route change
Checks the source and destination address then permits or denies specific protocols
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Connects the different areas

19. What is prefix length?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Aka Subnet mask
Supports both unequal metric load balancing and equal metric balancing.
Six equal cost paths

20. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
IETF
Between areas?
Domain

21. VTP Transparent Mode does what?

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

23. What two classless protocols act classful by default?
RIPv2 & EIGRP
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Scalable and fast convergence
15.....16 hops and the interface is down

24. 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
By DLCI's
Between areas?
1

25. Purpose of a Routing Protocol?
Layers 1 & 2
MAC based
Scalable and fast convergence
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

26. What algorithm does EIGRP use?
Determines the cost which is the bandwidth
The Diffusing Update Algorithm (DUAL)
10Mb/s
No

27. Who designed OSPF?
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.
IETF
It combines the advantages of Link-State and Distance vector routing protocols.
Inter-VLAN routing

28. Describe features of RIPv1
Every 30 Seconds
Autonomous System
Associating the network address with a local DLCI.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

29. How often are LMI's sent out?
Test Firsts/ Routes Second
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Every 10 Seconds
Disable auto summarization

30. Why is it important to have a loopback address when using OSPF?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
MAC based
A combination of Link-state and distance vector
224.0.0.10

31. What are the two ways routers can learn about the destination information?
A trunk
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Plaintext and MD5

32. In regards to ACL's What are the three protocols?
16
Between areas?
Determines the cost which is the bandwidth
One ACL per protocol - One ACL per direction - Once ACL per interface

33. How does an Extended ACL work?
Checks the source and destination address then permits or denies specific protocols
Bandwidth & Delay
RIPv2 & EIGRP
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

34. Break down the word Link-State

35. For an adjacency to occur what do the routers have to agree on?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Associating the network address with a local DLCI.
Unicast - Multicast - Anycast
RIPv2 and EIGRP

36. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
Port based
A layer 3 switch or router
Each router builds a map of the network and determines the shortest path to every network.

37. How does inbound ACL work?
110
EIGRP - OSPF - RIP
Test Firsts/ Routes Second
0

38. What does EIGRP use to calculate it's metric?
30-50 seconds
Checks the source address and then permits or denies the entire protocol suite
Every 30 Seconds
Bandwidth & Delay

39. Describe a Inbound ACL
A permit statement
Every 5 seconds
Packets are processed before they are routed to an outbound interface.
4 times the hello interval

40. The no auto-summary command does what?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Forces protocols to behave as if they were classless
Every 30 minutes by default
Updates all DROTHER Routers when a change occurs

41. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
MAC based
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
IETF

42. What is one to nearest
Anycast
Forces protocols to behave as if they were classless
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
0

43. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Make sure you are in interface mode - then use this command ip access-group 1 out/in
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Port based
The update only includes info about the route change

44. What is the multicast address for EIGRP?
Aka Subnet mask
It is never useful to send information about a route back in the direction from which the original info came.
224.0.0.10
DROTHER

45. What type of algorithm does EIGRP use?
Connects the different areas
Advance Distance Vector
32768
DROTHER

46. What does DLCI stand for?
MD5 and you have to enable it if you want to use it.
4
Data Link Connection Identifier
Every 30 Seconds

47. An autonomous system could also be referred to as what?
Domain
Adjacency
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Private: link local

48. What is the default load balancing for RIP
4
MAC based
Every 5 seconds
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

49. Dynamic ACL's are dependent on what?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
90
15.....16 hops and the interface is down
Telnet connectivity - authentication and extended ACLs

50. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
224.0.0.5
224.0.0.10
Only topology within their respective area.