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 does the DR do?
Updates all DROTHER Routers when a change occurs
For line vty 0 4
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Only with Cisco IOS software release 12.3 (2) T

2. Problem with static routes
Not scalable - hard to maintain as the network grows
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
20 seconds: 10 missed BPDU's

3. How often does a router send link-state advertisements?
Forces protocols to behave as if they were classless
Six equal cost paths
Every 30 minutes by default
Susceptible to routing loops

4. The no auto-summary command does what?
It is never useful to send information about a route back in the direction from which the original info came.
Unspecified
Forces protocols to behave as if they were classless
TRUE

5. Wildcard masks filter

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6. When do you use Access-Class
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
For line vty 0 4
The inverse of a subnet mask.

7. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
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.
Null
Different Autonomous Systems

8. Normal time for STP convergence
IP
A trunk
Bandwidth & Delay
30-50 seconds

9. How do you configure a sub interface?
Supports both unequal metric load balancing and equal metric balancing.
Every 10 seconds
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
Multiple virtual interfaces that are associated with one physical interface

10. What does bounded refer to?
...
4
Propagation of partial updates that are sent only to those routers that the changes affect.
MD5 and you have to enable it if you want to use it.

11. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Checks the source and destination address then permits or denies specific protocols
4
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.
Unicast - Multicast - Anycast

12. VTP Server Mode does what?

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13. What are two statements that are true of IPv6 address representation?
Data Link Connection Identifier
Advertised Distance & Feasible distance
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Cisco - ANSI - Q.933A

14. What is the purpose of LMI
Null
Private: link local
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
It is the signaling standard that maintains connection and statues between the DCE and DTE

15. What is ::
0
Unspecified
MAC based
90

16. What do you need to do if there are discontigous networks with EIGRP?
A layer 3 switch or router
Disable auto summarization
32768
TRUE

17. What does partial refer to?
To reduce OSPF traffic
1
The update only includes info about the route change
Propagation of partial updates that are sent only to those routers that the changes affect.

18. Admin distance of a Static Route?
Unicast - Multicast - Anycast
1
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
TRUE

19. Rip is capable of load balancing over as many as?
View
Six equal cost paths
Every 30 minutes by default
Packet Header

20. For an adjacency to occur what do the routers have to agree on?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A protocol on how to communicate with other routers
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

21. Formula for determining Subnets
2^n
All backup routes for destinations.
Area Border Router
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.

22. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
One ACL per protocol - One ACL per direction - Once ACL per interface
The lower MAC address
2^n

23. How often are OSPF hello packets sent out?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
It is never useful to send information about a route back in the direction from which the original info came.
Every 10 seconds
Checks the source and destination address then permits or denies specific protocols

24. Every ACL will need what?
4
Susceptible to routing loops
The inverse of a subnet mask.
A permit statement

25. By default OSPF uses what type of authentication?
Individual or group IP's
Null
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A backbone area...Also known as Area 0

26. Summarization of network information usually occurs where?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Inter-VLAN routing
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Between areas?

27. What are two OSPF authentication methods?
Associating the network address with a local DLCI.
It combines the advantages of Link-State and Distance vector routing protocols.
Plaintext and MD5
Propagation of partial updates that are sent only to those routers that the changes affect.

28. Formula for determining hosts
Routes First/ Tests second
Distance Vector
2^n-2
Aka Subnet mask

29. Can you delete individual entries in a specific ACL?
Supports both unequal metric load balancing and equal metric balancing.
Only with Cisco IOS software release 12.3 (2) T
10Mb/s
Bandwidth & Delay

30. A router running EIGRP will store what?
All backup routes for destinations.
Every 30 minutes by default
View
Telnet connectivity - authentication and extended ACLs

31. What do area's do?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Advertised Distance & Feasible distance
Cisco - ANSI - Q.933A
Reduce the link-state database and routing table

32. What is the default load balancing for RIP
A group of end stations with a common set of requirements - independent of their physical location
4
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Connects the different areas

33. What is a VLAN
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A group of end stations with a common set of requirements - independent of their physical location
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Routes First/ Tests second

34. What distant vector protocols exhibit classless behavior?
30-50 seconds
RIPv2 and EIGRP
2^n
Because a loopback interface is always active and cannot be in a down state like a real interface can.

35. What two parameters does EIGRP use to determine the best route?
Plaintext and MD5
Different Autonomous Systems
The update only includes info about the route change
Advertised Distance & Feasible distance

36. With OSPF - what must be defined?
Updates all DROTHER Routers when a change occurs
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
A backbone area...Also known as Area 0
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

37. What is the default for equal cost paths for load balancing with OSPF?
4
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
...
Associating the network address with a local DLCI.

38. How often are LMI's sent out?
Every 10 Seconds
Reduce the link-state database and routing table
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
For line vty 0 4

39. What is the dead interval
Test Firsts/ Routes Second
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
IETF
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

40. What are non designated routers called?
TRUE
EIGRP - OSPF - RIP
DROTHER
Updates all DROTHER Routers when a change occurs

41. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Connects the different areas
16
4 times the hello interval

42. What are the two ways routers can learn about the destination information?
Checks the source and destination address then permits or denies specific protocols
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
10Mb/s
1.) Enter the Routing Manually 2.) Use Dymamic Routing

43. With OSPF - there must always be a area......
0
Maximizing address efficiency - organization - summarization
30-50 seconds
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

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

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45. What three types of IPv6 address types are there?
To reduce OSPF traffic
Every 5 seconds
Match on all routers or it will not work
Unicast - Multicast - Anycast

46. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
32768
Every 5 seconds
Make sure you are in interface mode - then use this command ip access-group 1 out/in

47. Purpose of a Routing Protocol?
RIPv2 & EIGRP
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Routes First/ Tests second

48. How is an EUI-64 format interface ID created from a 48-Bit MAC address
A group of end stations with a common set of requirements - independent of their physical location
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
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
MD5 and you have to enable it if you want to use it.

49. How does a Standard ACL work?
15.....16 hops and the interface is down
Every 30 minutes by default
The Root bridge is the bridge with the lowest bridge ID
Checks the source address and then permits or denies the entire protocol suite

50. Why is this done?
120
4 times the hello interval
To reduce OSPF traffic
Different Autonomous Systems