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 type of algorithm does OSPF & IS-IS use?
DROTHER
For line vty 0 4
TRUE
Link-State

2. What is the default for equal cost paths for load balancing with OSPF?
...
Susceptible to routing loops
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
4

3. How often are periodic updates sent out via RIP
Every 30 Seconds
No
90
Adjacency

4. Spanning-Tree coast of 4
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
1Gb/s
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Six equal cost paths

5. How do you configure OSPF
MD5 and you have to enable it if you want to use it.
Plaintext and MD5
To select the best path to the destination
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

6. Break down the word Link-State

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7. What is ::1
Designated Router (DR) and a Back-up designated Router (BDR)
Loopback
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

8. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Distance Vector
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

9. Benefits of OSPF?
Associating the network address with a local DLCI.
...
Individual or group IP's
Scalable and fast convergence

10. A router running EIGRP will store what?
The lower MAC address
All backup routes for destinations.
Null
Routes First/ Tests second

11. What are the three LMI standards
Cisco - ANSI - Q.933A
Automatically
IETF
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

12. How often does a router send link-state advertisements?
Every 30 minutes by default
Each router builds a map of the network and determines the shortest path to every network.
Multicast
224.0.0.5

13. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Every 30 Seconds
Reduce the link-state database and routing table
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

14. Describe features of RIPv1
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Distance Vector
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

15. Admin distance of a Static Route?
Packets are processed before they are routed to an outbound interface.
...
1
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

16. Describe features of RIPv2
110
Advertised Distance & Feasible distance
Reduce the link-state database and routing table
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

17. What is the Wildcard mask
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.
Ever 2 seconds
Aka Subnet mask
The inverse of a subnet mask.

18. For an adjacency to occur what do the routers have to agree on?
Match on all routers or it will not work
...
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A link is an interface on a router

19. What is a VLAN
120
For line vty 0 4
IP
A group of end stations with a common set of requirements - independent of their physical location

20. How does an outbound ACL work?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Each router builds a map of the network and determines the shortest path to every network.
Routes First/ Tests second
Data Link Connection Identifier

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

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22. For a VLAN to span across multiple switches What is required?
A combination of Link-state and distance vector
IP
A trunk
...

23. How do you configure a sub interface?
A link is an interface on a router
4 times the hello interval
MAC based
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

24. An autonomous system could also be referred to as what?
Domain
One ACL per protocol - One ACL per direction - Once ACL per interface
Adjacency
Make sure you are in interface mode - then use this command ip access-group 1 out/in

25. What three types of IPv6 address types are there?
Port based
It is never useful to send information about a route back in the direction from which the original info came.
Unicast - Multicast - Anycast
Autonomous System

26. Example of a Routed Protocol?
Inter-VLAN routing
IP
Connects the different areas
It is never useful to send information about a route back in the direction from which the original info came.

27. The advantages of VLSM
MAC based
To reduce OSPF traffic
Automatically
Maximizing address efficiency - organization - summarization

28. What is an ABR
It combines the advantages of Link-State and Distance vector routing protocols.
Area Border Router
16
The Root bridge is the bridge with the lowest bridge ID

29. Summarization of network information usually occurs where?
Routes First/ Tests second
Between areas?
The inverse of a subnet mask.
A combination of Link-state and distance vector

30. What is an Autonomous System?
0
...
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
The update only includes info about the route change

31. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Unspecified
Layers 1 & 2
TRUE
Supports both unequal metric load balancing and equal metric balancing.

32. How does a Standard ACL work?
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.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Checks the source address and then permits or denies the entire protocol suite
Supports both unequal metric load balancing and equal metric balancing.

33. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Inter-VLAN routing
Data Link Connection Identifier

34. What is prefix length?
Scalable and fast convergence
Between areas?
30-50 seconds
Aka Subnet mask

35. How often does EIGRP send hellow packets?
10Mb/s
2^n-2
Every 5 seconds
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

36. What are non designated routers called?
Multiple virtual interfaces that are associated with one physical interface
Data Link Connection Identifier
DROTHER
Advertised Distance & Feasible distance

37. What address is FE80:/10
Test Firsts/ Routes Second
Unicast - Multicast - Anycast
Private: link local
Between areas?

38. How often are LMI's sent out?
Every 10 Seconds
Test Firsts/ Routes Second
The Root bridge is the bridge with the lowest bridge ID
Match on all routers or it will not work

39. Admin distance of OSPF?
Associating the network address with a local DLCI.
1
Domain
110

40. Problem with RIP
Advance Distance Vector
Susceptible to routing loops
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Carry's traffic for multiple VLANS

41. When do you use Access-Class
Determines the cost which is the bandwidth
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
For line vty 0 4
All backup routes for destinations.

42. What is passing VLAN traffic to another called?
Inter-VLAN routing
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Every 10 seconds

43. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Maximizing address efficiency - organization - summarization
The update only includes info about the route change

44. How often are BPDU's sent?
Ever 2 seconds
IP
A protocol on how to communicate with other routers
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

45. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Inter-VLAN routing
32768
0
The lower MAC address

46. By default OSPF uses what type of authentication?
Bandwidth & Delay
Each router builds a map of the network and determines the shortest path to every network.
Null
Not scalable - hard to maintain as the network grows

47. How does inbound ACL work?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Advertised Distance & Feasible distance
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Test Firsts/ Routes Second

48. How do you apply the ACL to an interface
Supports both unequal metric load balancing and equal metric balancing.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
...
32768

49. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
It combines the advantages of Link-State and Distance vector routing protocols.
Reduce the link-state database and routing table

50. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Six equal cost paths
4
View
Between areas?