Test your basic knowledge |

CCENT

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. RIP Timers: What is an invalid Timer?
Bellman-Ford
(7)Application -(6)Presentation -(5)Session -(4)Transport - (3)Network - (2)Data Link - (1)Physical
This timer stabilizes routing information and helps prevent routing loops during periods when the topology is converging on new information. Once a route is marked as unreachable - it must stay in holddown long enough for all routers in the topology
F an update has not been received to refresh an existing route after 180 seconds (the default) - the route is marked as invalid by setting the metric to 16. The route is retained in the routing table until the flush timer expires.

2. Rip: Command to prevent rip updates on an interface
Router(config)# router rip - Router(config-router)# passive-interface fa0/0
256 - the interesting (non-255/0) number. IE: 255.240.0.0 the interesting number is 240
Router(config)#ip route {network address} {subnet-mask}
Shortest path first - (SPF)

3. Rip: how do hold down timers work?
2 - the bridge separates the collision domain
Router(config)# router rip - Router(config-router)# passive-interface fa0/0
Frames
1. Router receives update from neighbor indicating a route down - Router makes route as down and starts holddown timer - If router gets an update indicating route is back holddown is removed - If an update is received indicating route is down again i

4. Subnetting: where do the networks break with a /29

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

5. What is Layer 6 in the OSI Model?
The metric is called cost - and refers to the speed of the port - IE 56kps = 1785 where Fast Ethernet = 1
Presentation
This timer stabilizes routing information and helps prevent routing loops during periods when the topology is converging on new information. Once a route is marked as unreachable - it must stay in holddown long enough for all routers in the topology
Hop Count

6. Subnetting: where do the networks break with a /25

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

7. EIGRP: What is the name of the algorithm used for EIGRP?
DUAL: Difusing Update Algorithm
Network
F an update has not been received to refresh an existing route after 180 seconds (the default) - the route is marked as invalid by setting the metric to 16. The route is retained in the routing table until the flush timer expires.
2 - the bridge separates the collision domain

8. OSPF: What does OSPF use for its metric?
D
IEEE 802.3
180 seconds
The metric is called cost - and refers to the speed of the port - IE 56kps = 1785 where Fast Ethernet = 1

9. What is the boot sequence for Cisco Routers?
1. NVRAM - 2. Flash (sequential) - 3. TFTP server (network boot) - 4. ROM (partial IOS)
1. Discovery packets - LSP built containing the state of each link - Flood LSP to neighbors - Build Link-state database
Transport
255.255.255.252

10. What is Layer 7 in the OSI Model?
Application
Router(config)# router rip - Router(config-router)# passive-interface fa0/0
Hop Count
IEEE 802.3

11. Subnetting: How many hosts per network if the subnet mask is 255.255.255.224
30 per network
Every 128 ip's
R1(config)# router OSPF 1 - R1(config-router)#network 10.1.1.0 0.0.0.15 area 0
1. Discovery packets - LSP built containing the state of each link - Flood LSP to neighbors - Build Link-state database

12. EIGRP: What packet is used to propagate routing information?
Can be multicast or unicast depending on number of routers - Update packets. Responds with an ACK packet
60
1. Discovery packets - LSP built containing the state of each link - Flood LSP to neighbors - Build Link-state database
30 per network

13. What is the layer 3 PDU called?
Packets
110
/28
/24

14. Rip Timers: How long is the default for Holddown timer.
F an update has not been received to refresh an existing route after 180 seconds (the default) - the route is marked as invalid by setting the metric to 16. The route is retained in the routing table until the flush timer expires.
R1(config)#router eigrp 7 - R1(config-router)#network 192.168.1.0 0.0.0.3
180
62 per network

15. What are the commands to setup SSH?
Layer 2
/22
Router(config)#hostname R1 - R1(config)#line VTY 0 4 - R1(config-line)#login local - R1(config-line)#transport input telnet ssh - R1(config-line)#exit - R1(config)#username {user} password {pass} - R1(config)#ip domain-name {domainname} - R1(config)#
Data-Link

16. Subnetting: where do the networks break with a /26

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

17. What is the metric for EIGRP
Multicast packet used for discovery of neighbors sent every 5 seconds - on WAN links sent every 60 seconds
126 per network
180 seconds
Bandwidth - Delay - reliability and Load

18. Subnetting: What is a /30 in Decimal
255.255.255.252
D
Every 32 ip's
Bellman-Ford

19. Command for a static route with 'Next Hop' Address
Every 64 ip's
1:O/W - 2:Orange - 3:G/W - 4:Blue - 5:B/W - 6:Green - 7:Brown/W - 8:Brown
Router(config)#ip route {network address} {subnet-mask}
Hop Count

20. How many Collision domains are there on a with 1 hub and 2 computers?
1 - everything hooked to the hub is in the same collision domain
Switch forwards the frame as soon as it can
110
255.255.255.252

21. Subnetting: What is a 255.255.255.240 in prefix notation
126 per network
Frames
Session
/28

22. IEEE Standards: Fast Ethernet
255.255.255.128
IEEE 802.3u
/28
R1(config)#router eigrp 7 - R1(config-router)#network 192.168.1.0 0.0.0.3

23. Subnetting: What is a /27 in Decimal
255.255.255.128
255.255.255.224
Shortest path first - (SPF)
Every 64 ip's

24. Rip and EIGRP use what to keep other routers aware of their status?
255.255.255.128
Periodic Updates of their routing table
110
F an update has not been received to refresh an existing route after 180 seconds (the default) - the route is marked as invalid by setting the metric to 16. The route is retained in the routing table until the flush timer expires.

25. EIGRP: What packet is used to search for networks?
126 per network
Query and other router responds with a REPLY packet.
R1(config)#router eigrp 7 - R1(config-router)#network 192.168.1.0 0.0.0.3
It adds the cost of each jump - R1 to R2 over a t1 is a cost of 64 - R2 to computer is a cost of 1. Total cost of route is 65

26. Name the TCP/IP Layers
180 seconds
(5)Application - (4)Transport - (3)Internet - (2)Data-Link - (1)Physical
2 - each port is it's own collision domain
100

27. EIGRP: How do you view if there are any successor routes?
D
180
Show ip eigrp topology
This timer stabilizes routing information and helps prevent routing loops during periods when the topology is converging on new information. Once a route is marked as unreachable - it must stay in holddown long enough for all routers in the topology

28. IEEE Standards: Gibabit Ethernet (Copper)
Transport
/24
Can be multicast or unicast depending on number of routers - Update packets. Responds with an ACK packet
IEEE 802.3ab

29. Rip: What does v2 have that v1 does not?
120
Includes sub-net mask in updates making it classless - has authentication - supports variable length subnet mask - uses multicast instead of broadcast - supports manual summarization
Physical
IEEE 802.3ab

30. What is the Data-Link PDU called?
Router(config)#ip route {network address} {subnet-mask}
Closest multiple of the magic number that is not over the interesting octets number.
Frames
Pins 1+2 swap places with pins 3+6

31. OSPF: What is the default administrative distance?
2 - the bridge separates the collision domain
110
Can be multicast or unicast depending on number of routers - Update packets. Responds with an ACK packet
Presentation

32. OSPF: What is the process used by OSPF to build a routing table (step by step)
255.255.255.252
R1(config)#int s0/0 - R1(config-inf)clock rate 64000 <-- on the DCE
Packets
1. Discovery packets - LSP built containing the state of each link - Flood LSP to neighbors - Build Link-state database

33. Subnetting: How many hosts per network if the subnet mask is 255.255.255.128
126 per network
Layer 2
Interface changes state (up/down) - A route has entered or exited the unreachable state - a route was installed in the routing table.
Switch forwards frame once it completely receives it

34. OSPF: What Algorithm is used?
1. Router receives update from neighbor indicating a route down - Router makes route as down and starts holddown timer - If router gets an update indicating route is back holddown is removed - If an update is received indicating route is down again i
Show ip eigrp topology
Shortest path first - (SPF)
Switch forwards frame once it completely receives it

35. Subnetting: where do the networks break with a /28

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

36. Rip: What is the command to enable Ripv2?
Can be multicast or unicast depending on number of routers - Update packets. Responds with an ACK packet
Every 4 ip's
R1(config)#router rip - R1(config-router)#version 2
Bellman-Ford

37. What is Layer 4 in the OSI Model?
/9
Packets
(5)Application - (4)Transport - (3)Internet - (2)Data-Link - (1)Physical
Transport

38. Subnetting: What is a /18 in Decimal
1 - everything hooked to the hub is in the same collision domain
100
255.255.255.252
255.255.192.0

39. EIGRP: What is the hello packet used for?
Multicast packet used for discovery of neighbors sent every 5 seconds - on WAN links sent every 60 seconds
(5)Application - (4)Transport - (3)Internet - (2)Data-Link - (1)Physical
1:G/W - 2:Green - 3:O/W - 4:Blue - 5:B/W - 6:Orange - 7:Brown/W - 8:Brown
Can be multicast or unicast depending on number of routers - Update packets. Responds with an ACK packet

40. What is Layer 3 in the OSI Model?
Network
256 - the interesting (non-255/0) number. IE: 255.240.0.0 the interesting number is 240
Every 4 ip's
Switch forwards frame once it completely receives it

41. IEEE Standards: Ethernet
It adds the cost of each jump - R1 to R2 over a t1 is a cost of 64 - R2 to computer is a cost of 1. Total cost of route is 65
IEEE 802.3
Every 128 ip's
Interface changes state (up/down) - A route has entered or exited the unreachable state - a route was installed in the routing table.

42. What gets the clock rate - DCE or DTE?
Router(config)#hostname R1 - R1(config)#line VTY 0 4 - R1(config-line)#login local - R1(config-line)#transport input telnet ssh - R1(config-line)#exit - R1(config)#username {user} password {pass} - R1(config)#ip domain-name {domainname} - R1(config)#
DCE
30 per network
1-65535

43. What is Layer 1 in the OSI Model?
Physical
R1(config)# router OSPF 1 - R1(config-router)#network 10.1.1.0 0.0.0.15 area 0
Router(config)# router rip - Router(config-router)# passive-interface fa0/0
Every 128 ip's

44. EIGRP: What is the range of Autonomous System numbers?
1-65535
Router(config)#ip route {exit-interface}
1. Discovery packets - LSP built containing the state of each link - Flood LSP to neighbors - Build Link-state database
1 - everything hooked to the hub is in the same collision domain

45. What is the Network PDU called?
Packets
255.255.255.252
Presentation
The metric is called cost - and refers to the speed of the port - IE 56kps = 1785 where Fast Ethernet = 1

46. IEEE Standards: Gibabit Ethernet (Fibre)
IEEE 802.3z
IEEE 802.3ab
R1(config)#router eigrp 7 - R1(config-router)#network 192.168.1.0 0.0.0.3
It adds the cost of each jump - R1 to R2 over a t1 is a cost of 64 - R2 to computer is a cost of 1. Total cost of route is 65

47. What is the Transport PDU called?
Segments
Closest multiple of the magic number that is not over the interesting octets number.
R1(config)#router eigrp 7 - R1(config-router)#network 192.168.1.0 0.0.0.3
R1(config)# router OSPF 1 - R1(config-router)#network 10.1.1.0 0.0.0.15 area 0

48. OSPF: How does OSPF calulate the cost of each route - to figure out which way to go?
It adds the cost of each jump - R1 to R2 over a t1 is a cost of 64 - R2 to computer is a cost of 1. Total cost of route is 65
(5)Application - (4)Transport - (3)Internet - (2)Data-Link - (1)Physical
IEEE 802.3
R1(config)# router OSPF 1 - R1(config-router)#network 10.1.1.0 0.0.0.15 area 0

49. Subnetting: What is a /25 in Decimal
It adds the cost of each jump - R1 to R2 over a t1 is a cost of 64 - R2 to computer is a cost of 1. Total cost of route is 65
R1(config)#router rip - R1(config-router)#version 2
255.255.255.128
Router(config)#ip route {network address} {subnet-mask}

50. Subnetting: What is a 255.255.255.0 in prefix notation
/24
256 - the interesting (non-255/0) number. IE: 255.240.0.0 the interesting number is 240
Router(config)# router rip - Router(config-router)# passive-interface fa0/0
Switch forwards frame once it completely receives it

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

CCENT

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests