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?
Unicast - Multicast - Anycast
Distance Vector
Port based
15.....16 hops and the interface is down


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

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3. What does the DR do?
Autonomous System
A group of end stations with a common set of requirements - independent of their physical location
Checks the source and destination address then permits or denies specific protocols
Updates all DROTHER Routers when a change occurs


4. Formula for determining hosts
Multicast
2^n-2
Only topology within their respective area.
110


5. What is the dead interval
TRUE
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
1.) Enter the Routing Manually 2.) Use Dymamic Routing
It combines the advantages of Link-State and Distance vector routing protocols.


6. With OSPF - what must be defined?
A backbone area...Also known as Area 0
Null
Test Firsts/ Routes Second
A protocol on how to communicate with other routers


7. Describe features of RIPv2
Checks the source address and then permits or denies the entire protocol suite
224.0.0.10
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.


8. What are non designated routers called?
Link-State
Test Firsts/ Routes Second
Scalable and fast convergence
DROTHER


9. What is the default for equal cost paths for load balancing with OSPF?
0
4
Only with Cisco IOS software release 12.3 (2) T
Routes First/ Tests second


10. What is one to many?
Multicast
Six equal cost paths
MAC based
By DLCI's


11. OSPF will elect a what?
DROTHER
15.....16 hops and the interface is down
Designated Router (DR) and a Back-up designated Router (BDR)
Advertised Distance & Feasible distance


12. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Every 10 Seconds
TRUE
90
Anycast


13. How often are LMI's sent out?
30-50 seconds
Unicast - Multicast - Anycast
Every 10 Seconds
4 times the hello interval


14. How does the SPF determine the shortest path?
Susceptible to routing loops
Carry's traffic for multiple VLANS
Determines the cost which is the bandwidth
Reduce the link-state database and routing table


15. Nonbackbone - internal routers are aware of what topology
224.0.0.10
Only topology within their respective area.
Carry's traffic for multiple VLANS
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


16. Every ACL will need what?
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.
A permit statement
Six equal cost paths


17. What is passing VLAN traffic to another called?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
RIPv2 and EIGRP
Inter-VLAN routing
EIGRP - OSPF - RIP


18. For an adjacency to occur what do the routers have to agree on?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
90
It combines the advantages of Link-State and Distance vector routing protocols.


19. What type of algorithm does RIP use?
Distance Vector
Plaintext and MD5
Packets are processed before they are routed to an outbound interface.
A layer 3 switch or router


20. How do you apply the ACL to an interface
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Make sure you are in interface mode - then use this command ip access-group 1 out/in
90


21. Admin distance of EIGRP?
One ACL per protocol - One ACL per direction - Once ACL per interface
A link is an interface on a router
90
IETF


22. Spanning-Tree cost of 19
110
100Mb/s
4
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers


23. Admin distance of a Static Route?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
1
Every 10 seconds
...


24. What is a VLAN
90
16
A group of end stations with a common set of requirements - independent of their physical location
To reduce OSPF traffic


25. What is an ABR
Advance Distance Vector
It combines the advantages of Link-State and Distance vector routing protocols.
Area Border Router
Designated Router (DR) and a Back-up designated Router (BDR)


26. The AS number must what?
Forces protocols to behave as if they were classless
Match on all routers or it will not work
Adjacency
Select the routing protocol - then specify the network.


27. What two parameters does EIGRP use to determine the best route?
Private: link local
4 times the hello interval
...
Advertised Distance & Feasible distance


28. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Every 10 Seconds
The inverse of a subnet mask.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
The Root bridge is the bridge with the lowest bridge ID


29. What is ::1
Loopback
To reduce OSPF traffic
Dijkstra's Algorithm
TRUE


30. What type of algorithm does OSPF & IS-IS use?
EIGRP - OSPF - RIP
Link-State
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Test Firsts/ Routes Second


31. VTP Client Mode does what?

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32. What does EIGRP use to calculate it's metric?
120
Bandwidth & Delay
110
30-50 seconds


33. What is the purpose of LMI
It is the signaling standard that maintains connection and statues between the DCE and DTE
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
The lower MAC address
The inverse of a subnet mask.


34. Admin distance of OSPF?
Supports both unequal metric load balancing and equal metric balancing.
110
Plaintext and MD5
Unspecified


35. What is the spilt horizon rule?
0
Every 10 Seconds
It is never useful to send information about a route back in the direction from which the original info came.
Because a loopback interface is always active and cannot be in a down state like a real interface can.


36. How does EIGRP work with regards to Load Balancing
Different Autonomous Systems
15.....16 hops and the interface is down
Supports both unequal metric load balancing and equal metric balancing.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL


37. Explain OSPF

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38. Dynamic VLAN is what?
MAC based
4
Link-State
Between areas?


39. What do you need to do if there are discontigous networks with EIGRP?
Carry's traffic for multiple VLANS
Disable auto summarization
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.
1


40. What is the default Bridge priority?
Checks the source address and then permits or denies the entire protocol suite
32768
EIGRP - OSPF - RIP
120


41. Max_age time for BPDU's

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42. Describe an Outbound ACL
Aka Subnet mask
Carry's traffic for multiple VLANS
TRUE
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL


43. What are two statements that are true of IPv6 address representation?
Port based
120
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Every 30 minutes by default


44. With ACL's where does the router extract information
Dijkstra's Algorithm
Packet Header
Checks the source and destination address then permits or denies specific protocols
0


45. VTP Transparent Mode does what?

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46. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Convergence
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
16
Reduce the link-state database and routing table


47. What two classless protocols act classful by default?
A group of end stations with a common set of requirements - independent of their physical location
RIPv2 & EIGRP
90
Test Firsts/ Routes Second


48. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
The lower MAC address
Reduce the link-state database and routing table
Distance Vector


49. Explain how routing loops occur with RIP?
...
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Loopback
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


50. What is the multicast address for EIGRP?
224.0.0.10
A backbone area...Also known as Area 0
TRUE
Maximizing address efficiency - organization - summarization