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Test your basic knowledge |
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. The AS number must what?
...
0
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Match on all routers or it will not work
2. Formula for determining Subnets
2^n
By DLCI's
EIGRP - OSPF - RIP
All backup routes for destinations.
3. Dynamic ACL's are dependent on what?
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.
Updates all DROTHER Routers when a change occurs
A combination of Link-state and distance vector
Telnet connectivity - authentication and extended ACLs
4. What does partial refer to?
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.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
The update only includes info about the route change
Every 5 seconds
5. Dynamic VLAN is what?
Scalable and fast convergence
Unspecified
MAC based
Susceptible to routing loops
6. The no auto-summary command does what?
RIPv2 & EIGRP
Forces protocols to behave as if they were classless
RIPv2 and EIGRP
The update only includes info about the route change
7. How often are BPDU's sent?
Ever 2 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Different Autonomous Systems
120
8. Describe a Inbound ACL
Packets are processed before they are routed to an outbound interface.
It is the signaling standard that maintains connection and statues between the DCE and DTE
A link is an interface on a router
Each router builds a map of the network and determines the shortest path to every network.
9. Routers are used for what?
To select the best path to the destination
30-50 seconds
Unicast - Multicast - Anycast
DROTHER
10. What type of authentication does EIGRP use?
A protocol on how to communicate with other routers
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Connects the different areas
MD5 and you have to enable it if you want to use it.
11. Exterior Gateway Protocols are designed for use between
Multicast
Different Autonomous Systems
It combines the advantages of Link-State and Distance vector routing protocols.
Loopback
12. Can you delete individual entries in a specific ACL?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
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
224.0.0.10
13. Example of a Routed Protocol?
Checks the source and destination address then permits or denies specific protocols
Every 10 Seconds
IP
Multiple virtual interfaces that are associated with one physical interface
14. What does bounded refer to?
View
Connects the different areas
Propagation of partial updates that are sent only to those routers that the changes affect.
10Mb/s
15. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Private: link local
1Gb/s
120
16. Normal time for STP convergence
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
30-50 seconds
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
17. What is the default Bridge priority?
4 times the hello interval
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
32768
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
18. How are Frame Relay Circuits identified?
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19. Break down the word Link-State
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20. Example of a Routing Protocol?
The update only includes info about the route change
Unicast - Multicast - Anycast
EIGRP - OSPF - RIP
Match on all routers or it will not work
21. How does an Extended ACL work?
Checks the source and destination address then permits or denies specific protocols
Match on all routers or it will not work
Disable auto summarization
Distance Vector
22. How often are OSPF hello packets sent out?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Every 10 seconds
4
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.
23. What three types of IPv6 address types are there?
Match on all routers or it will not work
Unicast - Multicast - Anycast
Ever 2 seconds
For line vty 0 4
24. What is one to nearest
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
Anycast
Reduce the link-state database and routing table
Autonomous System
25. What is the Shortest Path First algorithm also called?
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26. Problem with RIP
Disable auto summarization
Multicast
Susceptible to routing loops
RIPv2 and EIGRP
27. What is a VLAN
A group of end stations with a common set of requirements - independent of their physical location
A link is an interface on a router
1Gb/s
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
28. Nonbackbone - internal routers are aware of what topology
Between areas?
Only topology within their respective area.
MD5 and you have to enable it if you want to use it.
16
29. Admin distance of a Static Route?
...
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
1
30. How long is the dead interval
It is never useful to send information about a route back in the direction from which the original info came.
4 times the hello interval
2^n-2
Bandwidth & Delay
31. Admin distance of RIPv2
120
Different Autonomous Systems
MAC based
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
32. Benefits of OSPF?
224.0.0.5
Scalable and fast convergence
Area Border Router
Select the routing protocol - then specify the network.
33. OSPF routes packets within a single?
Advance Distance Vector
Connects the different areas
Checks the source and destination address then permits or denies specific protocols
Autonomous System
34. Advance Distance Vector or Hybrid uses what?
4
Determines the cost which is the bandwidth
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
A combination of Link-state and distance vector
35. What is an Autonomous System?
No
Match on all routers or it will not work
To select the best path to the destination
...
36. What is ::1
No
Every 5 seconds
Aka Subnet mask
Loopback
37. What address is FE80:/10
Private: link local
Multiple virtual interfaces that are associated with one physical interface
Multicast
The inverse of a subnet mask.
38. In Link state terminology - What is a link?
The update only includes info about the route change
All backup routes for destinations.
A link is an interface on a router
4
39. What does EIGRP use to calculate it's metric?
Scalable and fast convergence
10Mb/s
20 seconds: 10 missed BPDU's
Bandwidth & Delay
40. Describe features of RIPv1
Every 30 minutes by default
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Six equal cost paths
0
41. How does the SPF determine the shortest path?
Maximizing address efficiency - organization - summarization
A protocol on how to communicate with other routers
Determines the cost which is the bandwidth
Advance Distance Vector
42. When do you use Access-Class
For line vty 0 4
Connects the different areas
Link-State
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
43. Describe an Outbound ACL
Multiple virtual interfaces that are associated with one physical interface
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Port based
Autonomous System
44. For an adjacency to occur what do the routers have to agree on?
Packet Header
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Scalable and fast convergence
A group of end stations with a common set of requirements - independent of their physical location
45. What is an ABR
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.
Designated Router (DR) and a Back-up designated Router (BDR)
Multicast
Area Border Router
46. Why is this done?
To reduce OSPF traffic
Forces protocols to behave as if they were classless
Area Border Router
Every 5 seconds
47. How does inbound ACL work?
To select the best path to the destination
It is never useful to send information about a route back in the direction from which the original info came.
A link is an interface on a router
Test Firsts/ Routes Second
48. What distant vector protocols exhibit classless behavior?
It combines the advantages of Link-State and Distance vector routing protocols.
RIPv2 and EIGRP
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
To select the best path to the destination
49. Explain OSPF
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50. How is the root bridge determined?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
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.
The Root bridge is the bridge with the lowest bridge ID
Only topology within their respective area.
