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CCNA
Start Test
Study First
Subjects
:
cisco
,
it-skills
,
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 are the three LMI standards
Cisco - ANSI - Q.933A
...
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
The lower MAC address
2. Normal time for STP convergence
30-50 seconds
It combines the advantages of Link-State and Distance vector routing protocols.
Distance Vector
Supports both unequal metric load balancing and equal metric balancing.
3. What type of authentication does EIGRP use?
Select the routing protocol - then specify the network.
MD5 and you have to enable it if you want to use it.
10Mb/s
Null
4. What are subinterfaces?
Packet Header
Multiple virtual interfaces that are associated with one physical interface
Select the routing protocol - then specify the network.
It combines the advantages of Link-State and Distance vector routing protocols.
5. With ACL's where does the router extract information
Connects the different areas
Packet Header
For line vty 0 4
Private: link local
6. Admin distance of RIPv2
120
RIPv2 and EIGRP
Forces protocols to behave as if they were classless
224.0.0.10
7. Break down the word Link-State
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8. What does DLCI stand for?
Data Link Connection Identifier
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
Advertised Distance & Feasible distance
9. What are two statements that are true of IPv6 address representation?
MD5 and you have to enable it if you want to use it.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
1
Scalable and fast convergence
10. What two classless protocols act classful by default?
IP
RIPv2 & EIGRP
Every 10 Seconds
Advertised Distance & Feasible distance
11. What does a trunk do?
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12. Summarization of network information usually occurs where?
Between areas?
A combination of Link-state and distance vector
Supports both unequal metric load balancing and equal metric balancing.
Maximizing address efficiency - organization - summarization
13. What is the Wildcard mask
The inverse of a subnet mask.
...
Advance Distance Vector
Port based
14. Admin distance of a Static Route?
TRUE
Disable auto summarization
1
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.
15. What is the spilt horizon rule?
TRUE
It is never useful to send information about a route back in the direction from which the original info came.
Advance 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.
16. What are the major components of OSPF troubleshooting?
TRUE
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Maximizing address efficiency - organization - summarization
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
17. How often are LMI's sent out?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
4 times the hello interval
Every 30 Seconds
Every 10 Seconds
18. Describe features of RIPv2
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
16
The lower MAC address
4 times the hello interval
19. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
DROTHER
110
32768
20. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
Match on all routers or it will not work
20 seconds: 10 missed BPDU's
Distance Vector
21. How do you configure OSPF
Advance Distance Vector
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Data Link Connection Identifier
DROTHER
22. What address is FE80:/10
Dijkstra's Algorithm
Private: link local
Between areas?
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
23. Spanning-Tree cost of 19
100Mb/s
90
Private: link local
Between areas?
24. What type of algorithm does EIGRP use?
A protocol on how to communicate with other routers
Checks the source and destination address then permits or denies specific protocols
Advance Distance Vector
Different Autonomous Systems
25. How often are BPDU's sent?
A permit statement
...
Ever 2 seconds
To reduce OSPF traffic
26. Formula for determining Subnets
Updates all DROTHER Routers when a change occurs
Different Autonomous Systems
2^n
By DLCI's
27. How many hops are allowed with RIP?
15.....16 hops and the interface is down
Reduce the link-state database and routing table
2^n
Private: link local
28. What are the two ways routers can learn about the destination information?
Different Autonomous Systems
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.
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Supports both unequal metric load balancing and equal metric balancing.
29. 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
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Ever 2 seconds
MAC based
30. How does an outbound ACL work?
Different Autonomous Systems
Checks the source and destination address then permits or denies specific protocols
A link is an interface on a router
Routes First/ Tests second
31. What two things need to be done to enable dynamic routing?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Select the routing protocol - then specify the network.
Every 30 Seconds
Make sure you are in interface mode - then use this command ip access-group 1 out/in
32. How does an Extended ACL work?
By DLCI's
The lower MAC address
It is the signaling standard that maintains connection and statues between the DCE and DTE
Checks the source and destination address then permits or denies specific protocols
33. Purpose of a Routing Protocol?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
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.
IP
34. What does EIGRP use to calculate it's metric?
90
Plaintext and MD5
Bandwidth & Delay
Maximizing address efficiency - organization - summarization
35. VTP Server Mode does what?
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36. Explain how routing loops occur with RIP?
To select the best path to the destination
Checks the source and destination address then permits or denies specific protocols
Match on all routers or it will not work
...
37. What is an Autonomous System?
...
15.....16 hops and the interface is down
4
1
38. Benefits of OSPF?
Scalable and fast convergence
DROTHER
Between areas?
One ACL per protocol - One ACL per direction - Once ACL per interface
39. VTP Transparent Mode does what?
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40. The time delay for a router to match a network change?
Packet Header
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.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Convergence
41. Problem with static routes
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Not scalable - hard to maintain as the network grows
Connects the different areas
4
42. What is OSPF multicast address?
Packets are processed before they are routed to an outbound interface.
Only topology within their respective area.
224.0.0.5
Each router builds a map of the network and determines the shortest path to every network.
43. What Layer does Frame Relay operate at?
10Mb/s
Unspecified
Layers 1 & 2
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
44. How is the root bridge determined?
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
Routes First/ Tests second
Ever 2 seconds
45. The no auto-summary command does what?
1
Forces protocols to behave as if they were classless
Telnet connectivity - authentication and extended ACLs
Port based
46. How often are periodic updates sent out via RIP
Plaintext and MD5
Packets are processed before they are routed to an outbound interface.
Every 30 Seconds
Distance Vector
47. What does partial refer to?
Six equal cost paths
The update only includes info about the route change
4
Designated Router (DR) and a Back-up designated Router (BDR)
48. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Adjacency
Aka Subnet mask
View
Updates all DROTHER Routers when a change occurs
49. What algorithm does EIGRP use?
Propagation of partial updates that are sent only to those routers that the changes affect.
Scalable and fast convergence
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
The Diffusing Update Algorithm (DUAL)
50. What is Frame Relay?
Six equal cost paths
Plaintext and MD5
Forces protocols to behave as if they were classless
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
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