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 three types of IPv6 address types are there?
Every 30 Seconds
By DLCI's
Carry's traffic for multiple VLANS
Unicast - Multicast - Anycast

2. How often does a router send link-state advertisements?
Anycast
32768
The update only includes info about the route change
Every 30 minutes by default

3. OSPF will elect a what?
1
The lower MAC address
Designated Router (DR) and a Back-up designated Router (BDR)
A group of end stations with a common set of requirements - independent of their physical location

4. Who designed OSPF?
Checks the source and destination address then permits or denies specific protocols
4
Null
IETF

5. What are two OSPF authentication methods?
Plaintext and MD5
MD5 and you have to enable it if you want to use it.
Disable auto summarization
Every 10 seconds

6. Spanning-Tree cost of 19
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Forces protocols to behave as if they were classless
100Mb/s

7. Admin distance of RIPv2
120
100Mb/s
Supports both unequal metric load balancing and equal metric balancing.
10Mb/s

8. What are subinterfaces?
A permit statement
It combines the advantages of Link-State and Distance vector routing protocols.
Multiple virtual interfaces that are associated with one physical interface
Connects the different areas

9. What is OSPF multicast address?
224.0.0.5
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A permit statement
Not scalable - hard to maintain as the network grows

10. Admin distance of a connected Network?
A permit statement
0
Maximizing address efficiency - organization - summarization
To select the best path to the destination

11. What type of algorithm does EIGRP use?
110
224.0.0.5
Advance Distance Vector
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.

12. How does a Standard ACL work?
90
Every 30 Seconds
20 seconds: 10 missed BPDU's
Checks the source address and then permits or denies the entire protocol suite

13. Describe an Outbound ACL
Match on all routers or it will not work
DROTHER
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
One ACL per protocol - One ACL per direction - Once ACL per interface

14. Admin distance of OSPF?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
110
Scalable and fast convergence
Packet Header

15. With OSPF - there must always be a area......
16
DROTHER
Not scalable - hard to maintain as the network grows
0

16. What do area's do?
Reduce the link-state database and routing table
Supports both unequal metric load balancing and equal metric balancing.
EIGRP - OSPF - RIP
A permit statement

17. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Plaintext and MD5
0
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
TRUE

18. An autonomous system could also be referred to as what?
10Mb/s
Domain
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

19. What is the Shortest Path First algorithm also called?

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20. Formula for determining Subnets
It is the signaling standard that maintains connection and statues between the DCE and DTE
2^n
MD5 and you have to enable it if you want to use it.
30-50 seconds

21. How long is the dead interval
Every 10 seconds
4 times the hello interval
IETF
A protocol on how to communicate with other routers

22. What Layer does Frame Relay operate at?
Layers 1 & 2
Different Autonomous Systems
The lower MAC address
...

23. What does partial refer to?
Test Firsts/ Routes Second
The update only includes info about the route change
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.

24. Static VLAN is what?
TRUE
Port based
Checks the source address and then permits or denies the entire protocol suite
The Root bridge is the bridge with the lowest bridge ID

25. Example of a Routed Protocol?
Connects the different areas
Routes First/ Tests second
IP
Inter-VLAN routing

26. What are the major components of OSPF troubleshooting?
Checks the source address and then permits or denies the entire protocol suite
...
Test Firsts/ Routes Second
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

27. How does the SPF determine the shortest path?
Automatically
Area Border Router
Determines the cost which is the bandwidth
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

28. Spanning-Tree cost of 100
Individual or group IP's
10Mb/s
16
RIPv2 and EIGRP

29. How does inbound ACL work?
2^n-2
0
The Root bridge is the bridge with the lowest bridge ID
Test Firsts/ Routes Second

30. What is the spilt horizon rule?
It is never useful to send information about a route back in the direction from which the original info came.
The Root bridge is the bridge with the lowest bridge ID
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
120

31. How often are periodic updates sent out via RIP
Every 30 Seconds
It is the signaling standard that maintains connection and statues between the DCE and DTE
Determines the cost which is the bandwidth
30-50 seconds

32. What two classless protocols act classful by default?
RIPv2 & EIGRP
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Distance Vector
Six equal cost paths

33. Nonbackbone - internal routers are aware of what topology
...
224.0.0.10
4
Only topology within their respective area.

34. How often does EIGRP send hellow packets?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Every 5 seconds
Between areas?

35. Rip is capable of load balancing over as many as?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Updates all DROTHER Routers when a change occurs
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.
Six equal cost paths

36. Classful Protocols summarize
Only with Cisco IOS software release 12.3 (2) T
Automatically
Individual or group IP's
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

37. A router running EIGRP will store what?
A permit statement
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
224.0.0.5
All backup routes for destinations.

38. Problem with RIP
Susceptible to routing loops
Autonomous System
One ACL per protocol - One ACL per direction - Once ACL per interface
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

39. VTP Server Mode does what?

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40. Explain how routing loops occur with RIP?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
...
Loopback
A group of end stations with a common set of requirements - independent of their physical location

41. Routers are used for what?
To select the best path to the destination
15.....16 hops and the interface is down
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

42. How often are OSPF hello packets sent out?
It combines the advantages of Link-State and Distance vector routing protocols.
Every 10 seconds
Advance Distance Vector
Susceptible to routing loops

43. What are the two ways routers can learn about the destination information?
Autonomous System
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Updates all DROTHER Routers when a change occurs
Individual or group IP's

44. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
Individual or group IP's
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

45. What is prefix length?
Ever 2 seconds
Every 10 seconds
It combines the advantages of Link-State and Distance vector routing protocols.
Aka Subnet mask

46. VTP Client Mode does what?

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47. Purpose of a Routing Protocol?
Propagation of partial updates that are sent only to those routers that the changes affect.
Adjacency
Susceptible to routing loops
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

48. What is one to nearest
The lower MAC address
0
Connects the different areas
Anycast

49. What distant vector protocols exhibit classless behavior?
Cisco - ANSI - Q.933A
Data Link Connection Identifier
RIPv2 and EIGRP
The Root bridge is the bridge with the lowest bridge ID

50. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
TRUE
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.
120
The inverse of a subnet mask.