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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. What is one to many?
Multicast
Associating the network address with a local DLCI.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
RIPv2 and EIGRP

2. What is one to nearest
Anycast
16
Advertised Distance & Feasible distance
Routes First/ Tests second

3. Describe features of RIPv2
Susceptible to routing loops
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
4
Every 10 seconds

4. In regards to ACL's What are the three protocols?
Unspecified
No
One ACL per protocol - One ACL per direction - Once ACL per interface
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

5. In Link state terminology - What is a link?
A link is an interface on a router
For line vty 0 4
Test Firsts/ Routes Second
1

6. Max_age time for BPDU's

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7. Dynamic ACL's are dependent on what?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
It combines the advantages of Link-State and Distance vector routing protocols.
Every 10 seconds
Telnet connectivity - authentication and extended ACLs

8. How often are LMI's sent out?
0
Aka Subnet mask
Every 10 Seconds
4

9. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
To select the best path to the destination
1Gb/s
Telnet connectivity - authentication and extended ACLs

10. What is the default for equal cost paths for load balancing with OSPF?
4
Multicast
Carry's traffic for multiple VLANS
Match on all routers or it will not work

11. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
1.) Enter the Routing Manually 2.) Use Dymamic Routing
It is the signaling standard that maintains connection and statues between the DCE and DTE

12. What type of algorithm does OSPF & IS-IS use?
Link-State
Packet Header
30-50 seconds
Routes First/ Tests second

13. How often does EIGRP send hellow packets?
Null
To reduce OSPF traffic
Checks the source and destination address then permits or denies specific protocols
Every 5 seconds

14. How does Link-State work?
Forces protocols to behave as if they were classless
...
Each router builds a map of the network and determines the shortest path to every network.
For line vty 0 4

15. Every ACL will need what?
Bandwidth & Delay
The update only includes info about the route change
A permit statement
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.

16. How often are periodic updates sent out via RIP
Every 30 Seconds
The Root bridge is the bridge with the lowest bridge ID
Area Border Router
No

17. Describe an Outbound ACL
Match on all routers or it will not work
Only topology within their respective area.
Susceptible to routing loops
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

18. Rip is capable of load balancing over as many as?
Susceptible to routing loops
EIGRP - OSPF - RIP
Six equal cost paths
1Gb/s

19. What does DLCI stand for?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Data Link Connection Identifier
Domain
Port based

20. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
Multiple virtual interfaces that are associated with one physical interface
Different Autonomous Systems
It is the signaling standard that maintains connection and statues between the DCE and DTE

21. What is the multicast address for EIGRP?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
224.0.0.10
Different Autonomous Systems
Test Firsts/ Routes Second

22. What does the DR do?
90
Plaintext and MD5
Propagation of partial updates that are sent only to those routers that the changes affect.
Updates all DROTHER Routers when a change occurs

23. Why is EIGRP considered a Hybrid routing protocol?
Susceptible to routing loops
It combines the advantages of Link-State and Distance vector routing protocols.
Every 10 seconds
Domain

24. Admin distance of OSPF?
Supports both unequal metric load balancing and equal metric balancing.
110
TRUE
Unicast - Multicast - Anycast

25. How do you apply the ACL to an interface
TRUE
4
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Every 10 Seconds

26. How does EIGRP work with regards to Load Balancing
Advance Distance Vector
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Supports both unequal metric load balancing and equal metric balancing.
All backup routes for destinations.

27. How do you configure a sub interface?
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
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
The Root bridge is the bridge with the lowest bridge ID
Because a loopback interface is always active and cannot be in a down state like a real interface can.

28. What is an ABR
Maximizing address efficiency - organization - summarization
The Diffusing Update Algorithm (DUAL)
Area Border Router
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

29. What type of algorithm does RIP use?
120
To select the best path to the destination
Distance Vector
A permit statement

30. What are two OSPF authentication methods?
It combines the advantages of Link-State and Distance vector routing protocols.
Plaintext and MD5
Bandwidth & Delay
Checks the source and destination address then permits or denies specific protocols

31. How does an Extended ACL work?
Match on all routers or it will not work
Select the routing protocol - then specify the network.
Checks the source and destination address then permits or denies specific protocols
2^n-2

32. What is the default Bridge priority?
TRUE
32768
Aka Subnet mask
Domain

33. Spanning-Tree coast of 4
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
1Gb/s
Checks the source address and then permits or denies the entire protocol suite

34. Break down the word Link-State

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35. Formula for determining Subnets
2^n
Reduce the link-state database and routing table
Anycast
Every 30 minutes by default

36. With ACL's where does the router extract information
0
Packet Header
Select the routing protocol - then specify the network.
Multicast

37. What does a trunk do?

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38. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
A trunk
30-50 seconds
The lower MAC address
Cisco - ANSI - Q.933A

39. Example of a Routing Protocol?
EIGRP - OSPF - RIP
For line vty 0 4
Cisco - ANSI - Q.933A
2^n

40. Routers are used for what?
Associating the network address with a local DLCI.
Private: link local
To select the best path to the destination
Make sure you are in interface mode - then use this command ip access-group 1 out/in

41. Dynamic VLAN is what?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Individual or group IP's
MAC based
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

42. By default OSPF uses what type of authentication?
...
Null
RIPv2 and EIGRP
Checks the source and destination address then permits or denies specific protocols

43. Routing protocol is what?
4
RIPv2 and EIGRP
A protocol on how to communicate with other routers
TRUE

44. Spanning-Tree cost of 100
The Root bridge is the bridge with the lowest bridge ID
10Mb/s
Distance Vector
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

45. What are subinterfaces?
Plaintext and MD5
Multiple virtual interfaces that are associated with one physical interface
Convergence
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

46. How often are OSPF hello packets sent out?
Inter-VLAN routing
By DLCI's
Every 10 seconds
Automatically

47. Classful Protocols summarize
Automatically
120
The Diffusing Update Algorithm (DUAL)
Select the routing protocol - then specify the network.

48. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
20 seconds: 10 missed BPDU's
Plaintext and MD5
Only topology within their respective area.

49. What is needed to pass traffic from one VLAN to another?
Scalable and fast convergence
A layer 3 switch or router
Connects the different areas
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

50. Admin distance of a Static Route?
1
Telnet connectivity - authentication and extended ACLs
Advance Distance Vector
Not scalable - hard to maintain as the network grows

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