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. With OSPF - there must always be a area......
Telnet connectivity - authentication and extended ACLs
0
Reduce the link-state database and routing table
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

2. Why is this done?
Checks the source and destination address then permits or denies specific protocols
To select the best path to the destination
No
To reduce OSPF traffic

3. What is ::
Checks the source and destination address then permits or denies specific protocols
Unspecified
2^n
Aka Subnet mask

4. What type of algorithm does RIP use?
Distance Vector
Individual or group IP's
One ACL per protocol - One ACL per direction - Once ACL per interface
Supports both unequal metric load balancing and equal metric balancing.

5. How does an outbound ACL work?
0
Routes First/ Tests second
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Connects the different areas

6. Routers are used for what?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Automatically
To select the best path to the destination
Match on all routers or it will not work

7. VTP Transparent Mode does what?

8. Dynamic VLAN is what?
By DLCI's
...
Multiple virtual interfaces that are associated with one physical interface
MAC based

9. How does Link-State work?
Every 10 Seconds
Reduce the link-state database and routing table
Each router builds a map of the network and determines the shortest path to every network.
Scalable and fast convergence

10. Summarization of network information usually occurs where?
Between areas?
Telnet connectivity - authentication and extended ACLs
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A group of end stations with a common set of requirements - independent of their physical location

11. Admin distance of a connected Network?
Unspecified
0
The update only includes info about the route change
Designated Router (DR) and a Back-up designated Router (BDR)

12. With OSPF - what must be defined?
A backbone area...Also known as Area 0
Only topology within their respective area.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Different Autonomous Systems

13. Describe an Outbound ACL
By DLCI's
Telnet connectivity - authentication and extended ACLs
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
TRUE

14. How often does EIGRP send hellow packets?
Every 5 seconds
By DLCI's
224.0.0.5
Six equal cost paths

15. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
Loopback
The lower MAC address
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

16. Can a Router exchange routing information if they are using different Routing Protocols?
No
Every 30 Seconds
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.
All backup routes for destinations.

17. What do area's do?
Reduce the link-state database and routing table
IP
By DLCI's
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

18. What is an Autonomous System?
Carry's traffic for multiple VLANS
...
Each router builds a map of the network and determines the shortest path to every network.
Forces protocols to behave as if they were classless

19. What is needed to pass traffic from one VLAN to another?
Reduce the link-state database and routing table
A layer 3 switch or router
Multicast
Every 5 seconds

20. Example of a Routed Protocol?
2^n-2
One ACL per protocol - One ACL per direction - Once ACL per interface
Maximizing address efficiency - organization - summarization
IP

21. How often are LMI's sent out?
IETF
Packet Header
Every 10 Seconds
Supports both unequal metric load balancing and equal metric balancing.

22. Spanning-Tree cost of 19
2^n-2
100Mb/s
Packet Header
Supports both unequal metric load balancing and equal metric balancing.

23. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
DROTHER
Scalable and fast convergence
Dijkstra's Algorithm

24. What are two OSPF authentication methods?
Plaintext and MD5
Distance Vector
A permit statement
The Root bridge is the bridge with the lowest bridge ID

25. How long is the dead interval
4 times the hello interval
Data Link Connection Identifier
Multicast
The lower MAC address

26. Spanning-Tree cost of 100
10Mb/s
A link is an interface on a router
Only with Cisco IOS software release 12.3 (2) T
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

27. How is the root bridge determined?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
1
Connects the different areas
The Root bridge is the bridge with the lowest bridge ID

28. Rip is capable of load balancing over as many as?
Six equal cost paths
It is never useful to send information about a route back in the direction from which the original info came.
Convergence
Dijkstra's Algorithm

29. How does a Standard ACL work?
0
100Mb/s
Checks the source address and then permits or denies the entire protocol suite
For line vty 0 4

30. Describe features of RIPv1
Advertised Distance & Feasible distance
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Susceptible to routing loops

31. 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.
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Unicast - Multicast - Anycast
100Mb/s

32. What is the spilt horizon rule?
All backup routes for destinations.
10Mb/s
The Diffusing Update Algorithm (DUAL)
It is never useful to send information about a route back in the direction from which the original info came.

33. How does the SPF determine the shortest path?
120
4
Determines the cost which is the bandwidth
Advertised Distance & Feasible distance

34. With ACL's where does the router extract information
A permit statement
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
15.....16 hops and the interface is down
Packet Header

35. What is passing VLAN traffic to another called?
Every 30 Seconds
All backup routes for destinations.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Inter-VLAN routing

36. What do you need to do if there are discontigous networks with EIGRP?
Convergence
Disable auto summarization
A trunk
Determines the cost which is the bandwidth

37. What two things need to be done to enable dynamic routing?
The Diffusing Update Algorithm (DUAL)
Select the routing protocol - then specify the network.
The lower MAC address
2^n-2

38. OSPF will elect a what?
Multicast
Telnet connectivity - authentication and extended ACLs
Connects the different areas
Designated Router (DR) and a Back-up designated Router (BDR)

39. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Loopback
Multiple virtual interfaces that are associated with one physical interface
RIPv2 and EIGRP

40. What two classless protocols act classful by default?
1Gb/s
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
RIPv2 & EIGRP

41. How does inbound ACL work?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
MD5 and you have to enable it if you want to use it.
It combines the advantages of Link-State and Distance vector routing protocols.
Test Firsts/ Routes Second

42. What is prefix length?
Aka Subnet mask
View
Anycast
4

43. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Six equal cost paths
IP
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.

44. Exterior Gateway Protocols are designed for use between
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A protocol on how to communicate with other routers
Different Autonomous Systems
...

45. What Layer does Frame Relay operate at?
Layers 1 & 2
Determines the cost which is the bandwidth
Reduce the link-state database and routing table
Loopback

46. What are the major components of OSPF troubleshooting?
Layers 1 & 2
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Loopback
0

47. What does DLCI stand for?
Data Link Connection Identifier
Maximizing address efficiency - organization - summarization
Select the routing protocol - then specify the network.
Six equal cost paths

48. Static VLAN is what?
Every 30 Seconds
Port based
Reduce the link-state database and routing table
Packet Header

49. What three types of IPv6 address types are there?
Distance Vector
Unicast - Multicast - Anycast
Match on all routers or it will not work
Aka Subnet mask

50. Can you delete individual entries in a specific ACL?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
...
Only with Cisco IOS software release 12.3 (2) T
Area Border Router