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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. What do area's do?
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
Designated Router (DR) and a Back-up designated Router (BDR)
Reduce the link-state database and routing table
Unspecified

2. Describe features of RIPv2
Packets are processed before they are routed to an outbound interface.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
4
Loopback

3. In regards to troubleshooting OSPF what should you check?
DROTHER
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Ever 2 seconds
Link-State

4. Routers are used for what?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
By DLCI's
To select the best path to the destination
Inter-VLAN routing

5. How do you configure OSPF
Updates all DROTHER Routers when a change occurs
The Diffusing Update Algorithm (DUAL)
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Different Autonomous Systems

6. When do you use Access-Class
For line vty 0 4
Checks the source address and then permits or denies the entire protocol suite
1Gb/s
The lower MAC address

7. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
Domain
Scalable and fast convergence
A combination of Link-state and distance vector

8. How does EIGRP work with regards to Load Balancing
Scalable and fast convergence
Null
Supports both unequal metric load balancing and equal metric balancing.
Every 10 seconds

9. Describe a Inbound ACL
Not scalable - hard to maintain as the network grows
Packets are processed before they are routed to an outbound interface.
2^n-2
Dijkstra's Algorithm

10. What is the default load balancing for RIP
4
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
224.0.0.5
It is the signaling standard that maintains connection and statues between the DCE and DTE

11. Classful Protocols summarize
The update only includes info about the route change
Automatically
32768
TRUE

12. 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.
View
The Root bridge is the bridge with the lowest bridge ID
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

13. What two classless protocols act classful by default?
Distance Vector
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
RIPv2 & EIGRP
Domain

14. Routing protocol is what?
Multicast
Aka Subnet mask
For line vty 0 4
A protocol on how to communicate with other routers

15. In Link state terminology - What is a link?
A link is an interface on a router
Unicast - Multicast - Anycast
1
Determines the cost which is the bandwidth

16. How often are LMI's sent out?
Convergence
Every 10 Seconds
1.) Enter the Routing Manually 2.) Use Dymamic Routing
15.....16 hops and the interface is down

17. What is the purpose of LMI
No
Ever 2 seconds
The update only includes info about the route change
It is the signaling standard that maintains connection and statues between the DCE and DTE

18. What are the major components of OSPF troubleshooting?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Maximizing address efficiency - organization - summarization
To select the best path to the destination

19. Problem with RIP
10Mb/s
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Susceptible to routing loops

20. An OSPF neighbor relationship can also be called what?
Propagation of partial updates that are sent only to those routers that the changes affect.
Dijkstra's Algorithm
Adjacency
Maximizing address efficiency - organization - summarization

21. What does EIGRP use to calculate it's metric?
Bandwidth & Delay
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
1Gb/s
Unspecified

22. What is the Wildcard mask
The inverse of a subnet mask.
Checks the source address and then permits or denies the entire protocol suite
Dijkstra's Algorithm
To select the best path to the destination

23. Can you delete individual entries in a specific ACL?
Carry's traffic for multiple VLANS
90
By DLCI's
Only with Cisco IOS software release 12.3 (2) T

24. Break down the word Link-State

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25. 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
Only with Cisco IOS software release 12.3 (2) T
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
2^n

26. For a VLAN to span across multiple switches What is required?
Supports both unequal metric load balancing and equal metric balancing.
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
To select the best path to the destination
A trunk

27. Every ACL will need what?
Area Border Router
A permit statement
Forces protocols to behave as if they were classless
Updates all DROTHER Routers when a change occurs

28. What three types of IPv6 address types are there?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
No
Unicast - Multicast - Anycast

29. VTP Client Mode does what?

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30. The no auto-summary command does what?
...
A layer 3 switch or router
Forces protocols to behave as if they were classless
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.

31. How does an Extended ACL work?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Checks the source and destination address then permits or denies specific protocols
It is the signaling standard that maintains connection and statues between the DCE and DTE
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.

32. What are two OSPF authentication methods?
15.....16 hops and the interface is down
Link-State
90
Plaintext and MD5

33. Admin distance of a Static Route?
Packet Header
...
1
Ever 2 seconds

34. Why is EIGRP considered a Hybrid routing protocol?
The update only includes info about the route change
A layer 3 switch or router
By DLCI's
It combines the advantages of Link-State and Distance vector routing protocols.

35. Dynamic VLAN is what?
4
Null
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
MAC based

36. Explain OSPF

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37. How does an outbound ACL work?
Routes First/ Tests second
0
DROTHER
Every 10 Seconds

38. What is the dead interval
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
A permit statement
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Updates all DROTHER Routers when a change occurs

39. Spanning-Tree cost of 19
A permit statement
Plaintext and MD5
View
100Mb/s

40. Formula for determining Subnets
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Ever 2 seconds
2^n
To select the best path to the destination

41. What is an ABR
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Area Border Router
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Plaintext and MD5

42. Can a Router exchange routing information if they are using different Routing Protocols?
Propagation of partial updates that are sent only to those routers that the changes affect.
A trunk
No
16

43. How does a Standard ACL work?
A link is an interface on a router
Checks the source address and then permits or denies the entire protocol suite
Automatically
224.0.0.10

44. What are non designated routers called?
Test Firsts/ Routes Second
DROTHER
The lower MAC address
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

45. For an adjacency to occur what do the routers have to agree on?
100Mb/s
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A group of end stations with a common set of requirements - independent of their physical location
Unicast - Multicast - Anycast

46. What is needed to pass traffic from one VLAN to another?
Inter-VLAN routing
Updates all DROTHER Routers when a change occurs
A layer 3 switch or router
It is never useful to send information about a route back in the direction from which the original info came.

47. Admin distance of EIGRP?
Private: link local
IETF
15.....16 hops and the interface is down
90

48. How does the SPF determine the shortest path?
A link is an interface on a router
Different Autonomous Systems
Determines the cost which is the bandwidth
The Diffusing Update Algorithm (DUAL)

49. The advantages of VLSM
Maximizing address efficiency - organization - summarization
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Inter-VLAN routing
The inverse of a subnet mask.

50. What is ::
120
20 seconds: 10 missed BPDU's
Unspecified
Bandwidth & Delay