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 is OSPF multicast address?
Supports both unequal metric load balancing and equal metric balancing.
224.0.0.5
RIPv2 & EIGRP
A combination of Link-state and distance vector

2. How is the root bridge determined?
A protocol on how to communicate with other routers
A link is an interface on a router
To select the best path to the destination
The Root bridge is the bridge with the lowest bridge ID

3. 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.
10Mb/s
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

4. How often are LMI's sent out?
A group of end stations with a common set of requirements - independent of their physical location
By DLCI's
Every 10 Seconds
Unicast - Multicast - Anycast

5. What distant vector protocols exhibit classless behavior?
Every 10 seconds
A group of end stations with a common set of requirements - independent of their physical location
MD5 and you have to enable it if you want to use it.
RIPv2 and EIGRP

6. What does bounded refer to?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
2^n-2
Propagation of partial updates that are sent only to those routers that the changes affect.
A group of end stations with a common set of requirements - independent of their physical location

7. How often does a router send link-state advertisements?
The Diffusing Update Algorithm (DUAL)
Area Border Router
Disable auto summarization
Every 30 minutes by default

8. What is a VLAN
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Adjacency
EIGRP - OSPF - RIP
A group of end stations with a common set of requirements - independent of their physical location

9. What two classless protocols act classful by default?
Individual or group IP's
RIPv2 & EIGRP
Only topology within their respective area.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

10. What are the major components of OSPF troubleshooting?
Multiple virtual interfaces that are associated with one physical interface
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

11. Admin distance of EIGRP?
Carry's traffic for multiple VLANS
100Mb/s
IP
90

12. In frame relay What is Inverse Arp
4
A link is an interface on a router
Associating the network address with a local DLCI.
To select the best path to the destination

13. Describe features of RIPv2
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Unspecified

14. The advantages of VLSM
One ACL per protocol - One ACL per direction - Once ACL per interface
Select the routing protocol - then specify the network.
...
Maximizing address efficiency - organization - summarization

15. Spanning-Tree cost of 100
2^n
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.
Reduce the link-state database and routing table
10Mb/s

16. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
Advertised Distance & Feasible distance
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
TRUE

17. What is an Autonomous System?
Plaintext and MD5
A combination of Link-state and distance vector
The inverse of a subnet mask.
...

18. What are the two ways routers can learn about the destination information?
0
2^n-2
To select the best path to the destination
1.) Enter the Routing Manually 2.) Use Dymamic Routing

19. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Updates all DROTHER Routers when a change occurs
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Advertised Distance & Feasible distance
TRUE

20. Why is EIGRP considered a Hybrid routing protocol?
Aka Subnet mask
It combines the advantages of Link-State and Distance vector routing protocols.
1Gb/s
90

21. An OSPF neighbor relationship can also be called what?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Checks the source and destination address then permits or denies specific protocols
A protocol on how to communicate with other routers
Adjacency

22. What are two statements that are true of IPv6 address representation?
120
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Port based
Unspecified

23. Describe a Inbound ACL
Ever 2 seconds
MAC based
A layer 3 switch or router
Packets are processed before they are routed to an outbound interface.

24. Formula for determining Subnets
2^n
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
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.
Six equal cost paths

25. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
Bandwidth & Delay
A backbone area...Also known as Area 0
Private: link local

26. The time delay for a router to match a network change?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Convergence
Propagation of partial updates that are sent only to those routers that the changes affect.
One ACL per protocol - One ACL per direction - Once ACL per interface

27. Dynamic ACL's are dependent on what?
Advance Distance Vector
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
TRUE
Telnet connectivity - authentication and extended ACLs

28. For an adjacency to occur what do the routers have to agree on?
Disable auto summarization
It is never useful to send information about a route back in the direction from which the original info came.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Private: link local

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

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30. Admin distance of a Static Route?
Routes First/ Tests second
1
TRUE
Scalable and fast convergence

31. What are the three LMI standards
2^n
Cisco - ANSI - Q.933A
Only with Cisco IOS software release 12.3 (2) T
Multicast

32. What is ::1
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Not scalable - hard to maintain as the network grows
Loopback
MD5 and you have to enable it if you want to use it.

33. How often does EIGRP send hellow packets?
Determines the cost which is the bandwidth
Every 5 seconds
TRUE
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

34. Purpose of a Routing Protocol?
Plaintext and MD5
Dijkstra's Algorithm
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

35. How often are BPDU's sent?
Ever 2 seconds
Unicast - Multicast - Anycast
Private: link local
Multiple virtual interfaces that are associated with one physical interface

36. VTP Client Mode does what?

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37. With OSPF - what must be defined?
Carry's traffic for multiple VLANS
Unicast - Multicast - Anycast
0
A backbone area...Also known as Area 0

38. OSPF routes packets within a single?
Autonomous System
1Gb/s
The inverse of a subnet mask.
Supports both unequal metric load balancing and equal metric balancing.

39. What two things need to be done to enable dynamic routing?
Autonomous System
Layers 1 & 2
It is the signaling standard that maintains connection and statues between the DCE and DTE
Select the routing protocol - then specify the network.

40. What type of algorithm does EIGRP use?
Advance Distance Vector
One ACL per protocol - One ACL per direction - Once ACL per interface
The update only includes info about the route change
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.

41. What algorithm does EIGRP use?
DROTHER
Designated Router (DR) and a Back-up designated Router (BDR)
The Diffusing Update Algorithm (DUAL)
Only with Cisco IOS software release 12.3 (2) T

42. Admin distance of a connected Network?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Propagation of partial updates that are sent only to those routers that the changes affect.
A link is an interface on a router
0

43. Break down the word Link-State

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44. What is the purpose of LMI
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
It is the signaling standard that maintains connection and statues between the DCE and DTE
By DLCI's
Scalable and fast convergence

45. The AS number must what?
Match on all routers or it will not work
Automatically
It is the signaling standard that maintains connection and statues between the DCE and DTE
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

46. Formula for determining hosts
90
The update only includes info about the route change
Unspecified
2^n-2

47. What is the multicast address for EIGRP?
MAC based
Forces protocols to behave as if they were classless
224.0.0.10
TRUE

48. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Port based
Data Link Connection Identifier

49. Max_age time for BPDU's

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50. What Layer does Frame Relay operate at?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
The lower MAC address
Layers 1 & 2
4