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. Routing protocol is what?
A protocol on how to communicate with other routers
DROTHER
Adjacency
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0


2. VTP Client Mode does what?

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3. Can you delete individual entries in a specific ACL?
Each router builds a map of the network and determines the shortest path to every network.
Only with Cisco IOS software release 12.3 (2) T
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


4. The advantages of VLSM
Maximizing address efficiency - organization - summarization
For line vty 0 4
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
15.....16 hops and the interface is down


5. What does the DR do?
Updates all DROTHER Routers when a change occurs
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
MD5 and you have to enable it if you want to use it.
1


6. Admin distance of a Static Route?
A trunk
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.
TRUE
1


7. When do you use Access-Class
For line vty 0 4
Designated Router (DR) and a Back-up designated Router (BDR)
DROTHER
Connects the different areas


8. In frame relay What is Inverse Arp
Bandwidth & Delay
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
120
Associating the network address with a local DLCI.


9. What do you need to do if there are discontigous networks with EIGRP?
1Gb/s
1
One ACL per protocol - One ACL per direction - Once ACL per interface
Disable auto summarization


10. Dynamic VLAN is what?
Associating the network address with a local DLCI.
MAC based
Automatically
A permit statement


11. Rip is capable of load balancing over as many as?
Adjacency
Updates all DROTHER Routers when a change occurs
Six equal cost paths
Telnet connectivity - authentication and extended ACLs


12. Admin distance of EIGRP?
110
90
Inter-VLAN routing
Null


13. What is an ABR
The update only includes info about the route change
...
Area Border Router
4


14. Summarization of network information usually occurs where?
Domain
A group of end stations with a common set of requirements - independent of their physical location
Between areas?
Data Link Connection Identifier


15. How is an EUI-64 format interface ID created from a 48-Bit MAC address
The Root bridge is the bridge with the lowest bridge ID
...
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Updates all DROTHER Routers when a change occurs


16. What two classless protocols act classful by default?
RIPv2 & EIGRP
Disable auto summarization
One ACL per protocol - One ACL per direction - Once ACL per interface
Checks the source address and then permits or denies the entire protocol suite


17. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
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.
Inter-VLAN routing
A layer 3 switch or router
View


18. Routers are used for what?
To select the best path to the destination
Checks the source address and then permits or denies the entire protocol suite
...
Between areas?


19. What algorithm does EIGRP use?
The Diffusing Update Algorithm (DUAL)
The inverse of a subnet mask.
Area Border Router
MD5 and you have to enable it if you want to use it.


20. What does partial refer to?
TRUE
Convergence
To select the best path to the destination
The update only includes info about the route change


21. In Link state terminology - What is a link?
2^n
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A link is an interface on a router
Every 30 Seconds


22. What is ::
Unspecified
Multicast
Dijkstra's Algorithm
A combination of Link-state and distance vector


23. Formula for determining Subnets
Updates all DROTHER Routers when a change occurs
2^n
16
Disable auto summarization


24. Describe features of RIPv2
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
IETF
One ACL per protocol - One ACL per direction - Once ACL per interface
15.....16 hops and the interface is down


25. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Make sure you are in interface mode - then use this command ip access-group 1 out/in
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 protocol on how to communicate with other routers
Area Border Router


26. What is the Wildcard mask
Every 30 Seconds
The inverse of a subnet mask.
A permit statement
Determines the cost which is the bandwidth


27. How long is the dead interval
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.
4 times the hello interval
RIPv2 and EIGRP
30-50 seconds


28. VTP Server Mode does what?

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29. How many hops are allowed with RIP?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
15.....16 hops and the interface is down
Private: link local
All backup routes for destinations.


30. With ACL's where does the router extract information
Unspecified
Advertised Distance & Feasible distance
Only topology within their respective area.
Packet Header


31. What is the default Bridge priority?
Convergence
Forces protocols to behave as if they were classless
32768
MAC based


32. How does an Extended ACL work?
Checks the source and destination address then permits or denies specific protocols
All backup routes for destinations.
For line vty 0 4
2^n


33. How do you apply the ACL to an interface
A layer 3 switch or router
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A permit statement


34. What do area's do?
Routes First/ Tests second
Reduce the link-state database and routing table
Null
Between areas?


35. What is ::1
TRUE
Loopback
Every 10 Seconds
Multiple virtual interfaces that are associated with one physical interface


36. Wildcard masks filter

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37. How is the root bridge determined?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
The Root bridge is the bridge with the lowest bridge ID
10Mb/s
1


38. By default OSPF uses what type of authentication?
Null
It combines the advantages of Link-State and Distance vector routing protocols.
TRUE
A combination of Link-state and distance vector


39. OSPF routes packets within a single?
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
Autonomous System
Only with Cisco IOS software release 12.3 (2) T
Carry's traffic for multiple VLANS


40. What is the default for equal cost paths for load balancing with OSPF?
A protocol on how to communicate with other routers
Every 30 Seconds
4
Different Autonomous Systems


41. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
20 seconds: 10 missed BPDU's
Checks the source address and then permits or denies the entire protocol suite
224.0.0.10


42. Admin distance of OSPF?
110
Disable auto summarization
Select the routing protocol - then specify the network.
Every 10 seconds


43. VTP Transparent Mode does what?

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44. Explain OSPF

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45. What are the three LMI standards
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Cisco - ANSI - Q.933A
IETF
A permit statement


46. Static VLAN is what?
Propagation of partial updates that are sent only to those routers that the changes affect.
Port based
A link is an interface on a router
Every 10 Seconds


47. Every ACL will need what?
4
Ever 2 seconds
A permit statement
EIGRP - OSPF - RIP


48. How often are periodic updates sent out via RIP
Every 30 minutes by default
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Autonomous System
Every 30 Seconds


49. Admin distance of RIPv2
120
A protocol on how to communicate with other routers
Every 5 seconds
It is the signaling standard that maintains connection and statues between the DCE and DTE


50. Benefits of OSPF?
Every 10 seconds
Updates all DROTHER Routers when a change occurs
Checks the source and destination address then permits or denies specific protocols
Scalable and fast convergence