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CCNA

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. Why is EIGRP considered a Hybrid routing protocol?
Connects the different areas
Unspecified
It combines the advantages of Link-State and Distance vector routing protocols.
Test Firsts/ Routes Second

2. What does the back bone router do?
110
Connects the different areas
A layer 3 switch or router
Advertised Distance & Feasible distance

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

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4. VTP Client Mode does what?

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5. How long is the dead interval
A link is an interface on a router
4 times the hello interval
Select the routing protocol - then specify the network.
Packet Header

6. What do you need to do if there are discontigous networks with EIGRP?
Disable auto summarization
By DLCI's
...
Autonomous System

7. What is prefix length?
Aka Subnet mask
Determines the cost which is the bandwidth
Designated Router (DR) and a Back-up designated Router (BDR)
TRUE

8. How does an Extended ACL work?
Advertised Distance & Feasible distance
Checks the source and destination address then permits or denies specific protocols
A trunk
1Gb/s

9. How often are OSPF hello packets sent out?
Every 10 seconds
2^n-2
Every 5 seconds
224.0.0.10

10. Spanning-Tree cost of 100
MAC based
Unspecified
4 times the hello interval
10Mb/s

11. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
For line vty 0 4
2^n-2
15.....16 hops and the interface is down

12. What is ::1
Loopback
A layer 3 switch or router
Associating the network address with a local DLCI.
The lower MAC address

13. What is ::
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Unspecified
110

14. What address is FE80:/10
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Private: link local
The lower MAC address
A combination of Link-state and distance vector

15. 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.
Forces protocols to behave as if they were classless
32768
DROTHER

16. Routers are used for what?
120
To select the best path to the destination
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Packets are processed before they are routed to an outbound interface.

17. How do you apply the ACL to an interface
...
Make sure you are in interface mode - then use this command ip access-group 1 out/in
View
Telnet connectivity - authentication and extended ACLs

18. Who designed OSPF?
Not scalable - hard to maintain as the network grows
IETF
16
RIPv2 & EIGRP

19. What is Frame Relay?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Autonomous System
For line vty 0 4
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

20. Summarization of network information usually occurs where?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
The Root bridge is the bridge with the lowest bridge ID
Between areas?
A trunk

21. Wildcard masks filter

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22. What type of authentication does EIGRP use?
Every 5 seconds
Routes First/ Tests second
Null
MD5 and you have to enable it if you want to use it.

23. How often are periodic updates sent out via RIP
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Port based
Carry's traffic for multiple VLANS
Every 30 Seconds

24. What does bounded refer to?
Telnet connectivity - authentication and extended ACLs
MD5 and you have to enable it if you want to use it.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Propagation of partial updates that are sent only to those routers that the changes affect.

25. How does an outbound ACL work?
Routes First/ Tests second
Test Firsts/ Routes Second
EIGRP - OSPF - RIP
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

26. How often does a router send link-state advertisements?
2^n
The Diffusing Update Algorithm (DUAL)
Every 30 minutes by default
Different Autonomous Systems

27. How does a Standard ACL work?
10Mb/s
RIPv2 & EIGRP
Distance Vector
Checks the source address and then permits or denies the entire protocol suite

28. What three types of IPv6 address types are there?
Dijkstra's Algorithm
4
Connects the different areas
Unicast - Multicast - Anycast

29. 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.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
A link is an interface on a router
Port based

30. By default OSPF uses what type of authentication?
Updates all DROTHER Routers when a change occurs
Null
Ever 2 seconds
By DLCI's

31. Formula for determining hosts
2^n-2
To select the best path to the destination
Updates all DROTHER Routers when a change occurs
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

32. Static VLAN is what?
Port based
By DLCI's
Propagation of partial updates that are sent only to those routers that the changes affect.
No

33. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
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.
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

34. Why is this done?
Telnet connectivity - authentication and extended ACLs
To reduce OSPF traffic
Domain
16

35. What do area's do?
Checks the source and destination address then permits or denies specific protocols
Aka Subnet mask
Reduce the link-state database and routing table
Adjacency

36. What is the purpose of LMI
Select the routing protocol - then specify the network.
Convergence
RIPv2 & EIGRP
It is the signaling standard that maintains connection and statues between the DCE and DTE

37. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Convergence
Aka Subnet mask
Scalable and fast convergence

38. Can a Router exchange routing information if they are using different Routing Protocols?
Aka Subnet mask
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
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.
No

39. Admin distance of OSPF?
110
Disable auto summarization
...
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

40. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
The inverse of a subnet mask.
Distance Vector
TRUE
Routes First/ Tests second

41. How often are LMI's sent out?
90
Advertised Distance & Feasible distance
Every 10 Seconds
Ever 2 seconds

42. What distant vector protocols exhibit classless behavior?
30-50 seconds
Loopback
RIPv2 and EIGRP
Ever 2 seconds

43. When do you use Access-Class
0
It is the signaling standard that maintains connection and statues between the DCE and DTE
For line vty 0 4
Multicast

44. The time delay for a router to match a network change?
Loopback
110
Ever 2 seconds
Convergence

45. In regards to ACL's What are the three protocols?
Plaintext and MD5
One ACL per protocol - One ACL per direction - Once ACL per interface
A trunk
Test Firsts/ Routes Second

46. An OSPF neighbor relationship can also be called what?
Unspecified
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.
Adjacency
RIPv2 and EIGRP

47. What is passing VLAN traffic to another called?
0
MD5 and you have to enable it if you want to use it.
Data Link Connection Identifier
Inter-VLAN routing

48. A router running EIGRP will store what?
All backup routes for destinations.
Not scalable - hard to maintain as the network grows
15.....16 hops and the interface is down
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

49. What is needed to pass traffic from one VLAN to another?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A link is an interface on a router
A layer 3 switch or router
110

50. What Layer does Frame Relay operate at?
Forces protocols to behave as if they were classless
Layers 1 & 2
Only topology within their respective area.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

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