Test your basic knowledge |

CCNA Hard

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. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
The network layer
The system is malfunctioning.
Decrease the window size.
Show arp and Show interface

2. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Serial0/1 is down - line protocol is down
Network
Layer 4

3. CDP is running between two CK devices. What information is supplied by CDP?
Layer 4
The network layer
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
Device Identifiers - Capabilities list - Platform

4. The corporate head office of Certkiller has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence - wh
Hosts use a logical bus topology
It is the sum of the costs based on bandwidth
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Auto - On - and Desirable

5. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
A broadcast address will never be the source address of a frame
Network
Switches - Bridges - and Routers
Data link

6. What are two characteristics of 'store and forward' switching?
Fiber optic cable.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Data link

7. The CK network administrator needs to determine what LAN devices to install on the CK network. What are two advantages of using Layer 2 Ethernet switches over hubs?
Switches increase the number of collision domains in the network.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
A cross-over cable
Increased latency and Filtering of all frame errors

8. Which of the following correctly describe steps in the OSI date encapsulation process?
Switches increase the number of collision domains in the network.
Path selections and Packet switching.
802.1Q and ISL
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

9. Some of the older Certkiller switches store the entire frame before forwarding it to the destination. What are two effects on network performance of configuring a switch to do this?
An additional broadcast domain will be created.
802.3ab and 802.3z
Learning - Listening - and Forwarding
Increased latency and Filtering of all frame errors

10. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
To obtain the IP address of a connected device in order to telnet to the device - To verify Layer 2 connectivity between two devices when Layer 3 fails.
SMTP - FTP - HTTP - and HTTPS
To allow remote management of the switch.

11. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Transport
Information about a route should never be sent back in the direction from which the original update came.
Data link
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.

12. A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?
Port security
The Bridgeg ID and The bridge priority
Learning - Listening - and Forwarding
The network layer

13. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
The port is experiencing errors
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.

14. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
STP
Transport
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting

15. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Show arp and Show interface

16. You unsuccessfully try to ping the Internet from the PC host on the LAN. During the troubleshooting process - you enter the 'show ip nat translations' command but the output is blank. What is the most likely cause of the problem?
Port security
All switch and bridge ports are in either the forwarding or blocking state.
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
The interfaces must be configured for NAT.

17. In a switched LAN network - What is the Spanning-Tree algorithm used for?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
The interfaces must be configured for NAT.
It is used to prevent switching loops in networks with redundant switched routes.

18. The Certkiller network administrator wants to use a router named CK1 to segment the local network. What are some of the advantages of using CK1 to segment the network? (Choose two)
Device Identifiers - Capabilities list - Platform
HTTPS
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

19. Both the switches and hubs are being utilized within the CK network. Which of the following is true regarding the use of switches and hubs for the network connectivity in this network?
Configure the switch so that it has a lower priority than other switches in the network.
A broadcast address will never be the source address of a frame
The port is experiencing errors
Switches increase the number of collision domains in the network.

20. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Application
The network layer
Auto - On - and Desirable
100 meters

21. The Certkiller LAN is upgrading all devices to operate in full duplex. Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
The switch that will share the VLAN information must be in the VTP Server mode. -The switches must be in the same VTP domain. - The switches must be configured to use the same STP version. and The switches must be connected over VLAN trunks.
A cross-over cable
To allow remote management of the switch.

22. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
To allow remote management of the switch.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Switches increase the number of collision domains in the network.
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.

23. Why is full-duplex Ethernet superior to its single-duplex counterpart?
802.3ab and 802.3z
To prevent switching loops in networks with redundant switched paths.
It operates without collisions and It provides faster data transfer
Information about a route should never be sent back in the direction from which the original update came.

24. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
MAC Address and Bridge Priority
The Bridgeg ID and The bridge priority
802.1Q and ISL
Path selections and Packet switching.

25. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
The Bridgeg ID and The bridge priority
To obtain the IP address of a connected device in order to telnet to the device - To verify Layer 2 connectivity between two devices when Layer 3 fails.
Layer 4
An additional broadcast domain will be created.

26. An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location?
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
An electrical pulse indicates that the collision has cleared.
HTTPS - SMTP - and TFTP
TCP

27. On a half-duplex Ethernet LAN - two hosts attempt to send data simultaneously - resulting in a collision. Following this collision - what will the hosts do?
An electrical pulse indicates that the collision has cleared.
Serial0/1 is down - line protocol is down
Port security
Telnet and FTP

28. A Certkiller technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the sh
SMTP FTP and HTTP
Increased latency and Filtering of all frame errors
Data link
Decrease the window size.

29. You want to upgrade the Certkiller LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?
Layer 4
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
VTP

30. A Certkiller Ethernet switch receives a unicast frame with a destination MAC that IS listed in the switch table. What will this switch do with the frame?
The switch will forward the frame to a specific port
CertK Switch(config)# ip default-gateway 192.168.1.115
VLAN and Swtich
It provides a mechanism for the receiver to control the transmission speed - You have just installed a new web server on the Certkiller network. You are required to ensure that the web server is accessible from the Internet. The network uses private

31. A network administrator needs to force a high-performance switch that is located in the MDF to become the root bridge for a redundant path switched network. What can be done to ensure that this switch assumes the role of the Root Bridge?
Data link
Configure the switch so that it has a lower priority than other switches in the network.
In an improperly implemented redundant topology
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

32. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Increased latency and Filtering of all frame errors
Decrease the window size.
Configure the switch so that it has a lower priority than other switches in the network.
Layer 4

33. You have set up an Internet based FTP server - where people can upload and download files. In terms of the OSI model - What is the highest layer used during the FTP sessions.
VLAN and Swtich
Application
In an improperly implemented redundant topology
It will prevent segment 1's broadcasts from getting to segment 2.

34. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
The interfaces must be configured for NAT.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The switch will forward the frame to a specific port
A device listens and waits until the media is not busy before transmitting. and All devices on an Ethernet segment see data that passes on the network medium.

35. Which of the protocols below use TCP at the transport layer?
The network layer
SMTP - FTP - HTTP - and HTTPS
Switches increase the number of collision domains in the network.
Show cdp neighbor detail

36. You are the administrator of the Certkiller LAN and you have been reviewing error logs of networking devices and notice a large number of errors associated with several MAC addresses. You suspect that some of the errors are being generated by the rou
SMTP - FTP - HTTP - and HTTPS
Learning - Listening - and Forwarding
Show arp and Show interface
Layer 4

37. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Encapsulations PPP and authentication CHAP
In an improperly implemented redundant topology
Data link
It is the sum of the costs based on bandwidth

38. Which of the following are true of Ethernet technology?
Fiber optic cable.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Hosts use a logical bus topology
Information about a route should never be sent back in the direction from which the original update came.

39. You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network?
Congestion avoidance - Windowing and Buffering
An additional broadcast domain will be created.
HTTPS
Buffering - Cut-through - and Congestion avoidance

40. While troubleshooting a network connectivity problem - a Certkiller technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However - when the ping command is issued from the works
The network layer
Auto - On - and Desirable
VLAN and Swtich
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

41. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
Information about a route should never be sent back in the direction from which the original update came.
Layer 4
Certkiller B > trace
TCP

42. Certkiller is installing IP phones in a new office. The phones and office computers connect to the same device. To ensure maximum throughout for the phone data sessions - the company needs to make sure that the phone traffic is on a different network
Network
The Bridgeg ID and The bridge priority
Show arp and Show interface
VLAN and Swtich

43. You need to configure two Certkiller switches to exchange VLAN information. Which protocol provides a method of sharing VLAN configuration information between these two switches?
VTP
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
ARP and ICMP
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

44. As a Certkiller trainee you are required to set the default gateway on a Cisco switch to the IP address of 192.168.1.115. Which IOS command should you use?
Data link
CertK Switch(config)# ip default-gateway 192.168.1.115
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
It operates without collisions and It provides faster data transfer

45. Two buildings on the London campus of a CK corporation must be connected to use Ethernet with a bandwidth of at least 100 Mbps. CK is concerned about possible problems from voltage potential differences between the two buldings. Which media type shou
Layer 4
Decrease the window size.
Fiber optic cable.
Hosts use a logical bus topology

46. Which OSI layer header contains the address of a destination host that is on another network?
CertK Switch(config)# ip default-gateway 192.168.1.115
Network
This is an Ethernet port operating at half duplex
Path selections and Packet switching.

47. Which fields are included in the TCP header?
TCP
Source Port - Acknowledgment Number - and Window
The interfaces must be configured for NAT.
STP

48. What is the purpose of the spanning-tree algorithm in a switched LAN?
TCP
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
To prevent switching loops in networks with redundant switched paths.

49. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
A broadcast address will never be the source address of a frame
Information about a route should never be sent back in the direction from which the original update came.
It will prevent segment 1's broadcasts from getting to segment 2.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

50. A host computer has been correctly configured with a static IP address - but the default gateway is incorrectly set. Which layer of the OSI model will be first effected by this configuration error?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
CertK Switch(config)# ip default-gateway 192.168.1.115
Serial0/1 is down - line protocol is down
Layer 3

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 |

CCNA Hard

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