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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. Can a Router exchange routing information if they are using different Routing Protocols?
Test Firsts/ Routes Second
0
Every 10 Seconds
No

2. What is one to many?
Ever 2 seconds
Multicast
0
Scalable and fast convergence

3. What do area's do?
Area Border Router
IETF
The Diffusing Update Algorithm (DUAL)
Reduce the link-state database and routing table

4. Routers are used for what?
Data Link Connection Identifier
TRUE
Advertised Distance & Feasible distance
To select the best path to the destination

5. Routing protocol is what?
To select the best path to the destination
110
A protocol on how to communicate with other routers
A permit statement

6. Spanning-Tree cost of 19
10Mb/s
100Mb/s
...
Every 10 Seconds

7. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
TRUE
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Loopback

8. Formula for determining Subnets
2^n
Autonomous System
Domain
Only topology within their respective area.

9. Describe features of RIPv1
Multiple virtual interfaces that are associated with one physical interface
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Advance Distance Vector
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

10. What is an Autonomous System?
Select the routing protocol - then specify the network.
120
...
Forces protocols to behave as if they were classless

11. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
The Diffusing Update Algorithm (DUAL)
0
Bandwidth & Delay

12. With ACL's where does the router extract information
Test Firsts/ Routes Second
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.
Packet Header
Adjacency

13. Spanning-Tree coast of 4
Packet Header
Associating the network address with a local DLCI.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
1Gb/s

14. Example of a Routing Protocol?
Multiple virtual interfaces that are associated with one physical interface
Every 10 Seconds
EIGRP - OSPF - RIP
Inter-VLAN routing

15. Advance Distance Vector or Hybrid uses what?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Routes First/ Tests second
A combination of Link-state and distance vector
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

16. What is one to nearest
15.....16 hops and the interface is down
Anycast
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Reduce the link-state database and routing table

17. Max_age time for BPDU's

18. What does EIGRP use to calculate it's metric?
224.0.0.10
Bandwidth & Delay
Determines the cost which is the bandwidth
0

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

20. Why is it important to have a loopback address when using OSPF?
30-50 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Match on all routers or it will not work
Port based

21. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
Dijkstra's Algorithm
EIGRP - OSPF - RIP
Convergence

22. How often are OSPF hello packets sent out?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Loopback
Every 10 seconds
Scalable and fast convergence

23. For a VLAN to span across multiple switches What is required?
A trunk
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Area Border Router

24. What two parameters does EIGRP use to determine the best route?
Domain
Packets are processed before they are routed to an outbound interface.
By DLCI's
Advertised Distance & Feasible distance

25. What is the spilt horizon rule?
Area Border Router
It is never useful to send information about a route back in the direction from which the original info came.
Data Link Connection Identifier
Carry's traffic for multiple VLANS

26. What are non designated routers called?
Unicast - Multicast - Anycast
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
The lower MAC address
DROTHER

27. VTP Transparent Mode does what?

28. What does a trunk do?

29. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
4
Test Firsts/ Routes Second
The lower MAC address
A permit statement

30. How long is the dead interval
Not scalable - hard to maintain as the network grows
Unspecified
4 times the hello interval
Link-State

31. Example of a Routed Protocol?
Autonomous System
IP
Determines the cost which is the bandwidth
2^n-2

32. What do you need to do if there are discontigous networks with EIGRP?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Scalable and fast convergence
Loopback
Disable auto summarization

33. Admin distance of a connected Network?
Aka Subnet mask
DROTHER
To reduce OSPF traffic
0

34. Rip is capable of load balancing over as many as?
Six equal cost paths
Propagation of partial updates that are sent only to those routers that the changes affect.
4
Private: link local

35. A router running EIGRP will store what?
Scalable and fast convergence
All backup routes for destinations.
Individual or group IP's
0

36. How often are LMI's sent out?
IETF
Every 10 Seconds
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Scalable and fast convergence

37. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
Every 30 minutes by default
A group of end stations with a common set of requirements - independent of their physical location
20 seconds: 10 missed BPDU's

38. Normal time for STP convergence
30-50 seconds
Scalable and fast convergence
Supports both unequal metric load balancing and equal metric balancing.
MAC based

39. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
By DLCI's
No
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

40. Explain OSPF

41. Wildcard masks filter

42. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Routes First/ Tests second
Supports both unequal metric load balancing and equal metric balancing.

43. OSPF routes packets within a single?
Reduce the link-state database and routing table
IETF
Autonomous System
MAC based

44. What two classless protocols act classful by default?
RIPv2 & EIGRP
Cisco - ANSI - Q.933A
Carry's traffic for multiple VLANS
Updates all DROTHER Routers when a change occurs

45. What does partial refer to?
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.
The update only includes info about the route change
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Distance Vector

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

47. Benefits of OSPF?
A combination of Link-state and distance vector
One ACL per protocol - One ACL per direction - Once ACL per interface
Six equal cost paths
Scalable and fast convergence

48. Problem with RIP
Susceptible to routing loops
TRUE
4
90

49. Dynamic ACL's are dependent on what?
Advance Distance Vector
Automatically
Multiple virtual interfaces that are associated with one physical interface
Telnet connectivity - authentication and extended ACLs

50. What is the Wildcard mask
Every 10 Seconds
The inverse of a subnet mask.
Every 30 minutes by default
Maximizing address efficiency - organization - summarization