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. How many hops are allowed with RIP?
4 times the hello interval
0
Individual or group IP's
15.....16 hops and the interface is down


2. Classful Protocols summarize
A protocol on how to communicate with other routers
Automatically
RIPv2 and EIGRP
2^n-2


3. What is the default load balancing for RIP
It is never useful to send information about a route back in the direction from which the original info came.
Cisco - ANSI - Q.933A
4
Checks the source and destination address then permits or denies specific protocols


4. Describe a Inbound ACL
TRUE
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Packets are processed before they are routed to an outbound interface.
Plaintext and MD5


5. Routers are used for what?
110
The lower MAC address
4
To select the best path to the destination


6. What type of algorithm does RIP use?
Bandwidth & Delay
Advertised Distance & Feasible distance
TRUE
Distance Vector


7. What does DLCI stand for?
Data Link Connection Identifier
Checks the source and destination address then permits or denies specific protocols
No
Packets are processed before they are routed to an outbound interface.


8. How does the SPF determine the shortest path?
Not scalable - hard to maintain as the network grows
Port based
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Determines the cost which is the bandwidth


9. Summarization of network information usually occurs where?
Test Firsts/ Routes Second
View
Routes First/ Tests second
Between areas?


10. What is needed to pass traffic from one VLAN to another?
Unspecified
A layer 3 switch or router
Anycast
To select the best path to the destination


11. What distant vector protocols exhibit classless behavior?
Advertised Distance & Feasible distance
Forces protocols to behave as if they were classless
The inverse of a subnet mask.
RIPv2 and EIGRP


12. In Link state terminology - What is a link?
Susceptible to routing loops
Multiple virtual interfaces that are associated with one physical interface
Reduce the link-state database and routing table
A link is an interface on a router


13. Why is it important to have a loopback address when using OSPF?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


14. How often are periodic updates sent out via RIP
Connects the different areas
MD5 and you have to enable it if you want to use it.
Every 30 Seconds
Associating the network address with a local DLCI.


15. Max_age time for BPDU's

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16. What two parameters does EIGRP use to determine the best route?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Private: link local
Determines the cost which is the bandwidth
Advertised Distance & Feasible distance


17. Can a Router exchange routing information if they are using different Routing Protocols?
Checks the source address and then permits or denies the entire protocol suite
Connects the different areas
Every 5 seconds
No


18. What is the default for equal cost paths for load balancing with OSPF?
Only topology within their respective area.
4
Checks the source and destination address then permits or denies specific protocols
Port based


19. What type of algorithm does OSPF & IS-IS use?
Data Link Connection Identifier
The lower MAC address
Link-State
Every 30 Seconds


20. OSPF will elect a what?
Aka Subnet mask
224.0.0.5
Designated Router (DR) and a Back-up designated Router (BDR)
IP


21. VTP Server Mode does what?

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22. Describe an Outbound ACL
TRUE
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Forces protocols to behave as if they were classless
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.


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

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

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25. An OSPF neighbor relationship can also be called what?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Different Autonomous Systems
Packets are processed before they are routed to an outbound interface.
Adjacency


26. Describe features of RIPv1
Null
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.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Test Firsts/ Routes Second


27. Benefits of OSPF?
A layer 3 switch or router
120
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.
Scalable and fast convergence


28. Spanning-Tree cost of 19
All backup routes for destinations.
Anycast
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
100Mb/s


29. Formula for determining Subnets
Between areas?
2^n
1
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


30. Problem with static routes
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Link-State
Not scalable - hard to maintain as the network grows
To select the best path to the destination


31. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
20 seconds: 10 missed BPDU's
TRUE
120


32. What are the major components of OSPF troubleshooting?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Loopback
Only with Cisco IOS software release 12.3 (2) T
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication


33. How long is the dead interval
110
To reduce OSPF traffic
4 times the hello interval
MAC based


34. What algorithm does EIGRP use?
Advertised Distance & Feasible distance
The Diffusing Update Algorithm (DUAL)
TRUE
Link-State


35. Dynamic VLAN is what?
Carry's traffic for multiple VLANS
Every 10 seconds
MAC based
Inter-VLAN routing


36. What is ::1
Supports both unequal metric load balancing and equal metric balancing.
Only topology within their respective area.
Loopback
Match on all routers or it will not work


37. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
A trunk
For line vty 0 4


38. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
For line vty 0 4
2^n


39. How does a Standard ACL work?
16
Checks the source address and then permits or denies the entire protocol suite
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
A permit statement


40. Every ACL will need what?
TRUE
A permit statement
IETF
Only with Cisco IOS software release 12.3 (2) T


41. What is the default Bridge priority?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Adjacency
32768
A protocol on how to communicate with other routers


42. When do you use Access-Class
Checks the source and destination address then permits or denies specific protocols
Data Link Connection Identifier
For line vty 0 4
No


43. Admin distance of a connected Network?
Plaintext and MD5
0
Connects the different areas
Private: link local


44. The no auto-summary command does what?
All backup routes for destinations.
Packet Header
Forces protocols to behave as if they were classless
Unspecified


45. What does partial refer to?
The update only includes info about the route change
0
Inter-VLAN routing
Automatically


46. Normal time for STP convergence
A link is an interface on a router
30-50 seconds
Carry's traffic for multiple VLANS
It combines the advantages of Link-State and Distance vector routing protocols.


47. By default OSPF uses what type of authentication?
All backup routes for destinations.
Null
224.0.0.10
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.


48. What is the dead interval
Multicast
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A combination of Link-state and distance vector


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

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50. An autonomous system could also be referred to as what?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Domain
224.0.0.5
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs