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. You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?
The network layer
Show cdp neighbor detail
In an improperly implemented redundant topology
Switches increase the number of collision domains in the network.

2. Which of the following are types of flow control?
The network layer
An electrical pulse indicates that the collision has cleared.
Serial0/1 is down - line protocol is down
Buffering - Cut-through - and Congestion avoidance

3. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
The switch will forward the frame to a specific port
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
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.
Configure the switch so that it has a lower priority than other switches in the network.

4. Which protocol uses TCP port 443 at layer 4?
The Bridgeg ID and The bridge priority
HTTPS
Encapsulations PPP and authentication CHAP
Configure the switch so that it has a lower priority than other switches in the network.

5. The LAN needs are expanding at the CK corporate office - which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the CK network. Which of the following are layer 1 devices that you can use?
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.
Sequence number - Window size - and Acknowledgment number
A hub and A repeater.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

6. 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.
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.
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.
MAC Address and Bridge Priority
Application

7. The Certkiller corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?

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

8. Which three of the protocols below belong to the application layer? (Select three answer choices)
VTP will allow switches to share VLAN configuration information
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 will forward the frame to a specific port
HTTPS - SMTP - and TFTP

9. Which IOS user EXEC command will allow a network technician to determine which router in the path to an unreachable network host should be examined more closely for the cause of the network failure?
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 sequence number in the TCP header.
Certkiller B > trace
Information about a route should never be sent back in the direction from which the original update came.

10. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
Switches increase the number of collision domains in the network.
Data link
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
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

11. Which of the following services use TCP?
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.
SMTP FTP and HTTP
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
VTP

12. Assuming you build networks to exact specifications - What is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?
100 meters
Encapsulations PPP and authentication CHAP
Duplex mismatch
Increased latency and Filtering of all frame errors

13. 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?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
The sequence number in the TCP header.
The port is experiencing errors

14. 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)
Buffering - Cut-through - and Congestion avoidance
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Configure the switch so that it has lower priority than other switches in the network
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

15. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
Show arp and Show interface
VTP will allow switches to share VLAN configuration information
Configure the switch so that it has lower priority than other switches in the network
HTTPS

16. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
CertK Switch(config)# ip default-gateway 192.168.1.115
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
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.
It will prevent segment 1's broadcasts from getting to segment 2.

17. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
This is an Ethernet port operating at half duplex
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.
It is used to prevent switching loops in networks with redundant switched routes.
Data link

18. 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?
Switches - Bridges - and Routers
Configure the switch so that it has a lower priority than other switches in the network.
Duplex mismatch
The system is malfunctioning.

19. What kind of cable should be used to establish a trunked line between two Catalyst switches?
VTP
The switch will forward the frame to a specific port
TCP
A cross-over cable

20. A new switch is installed in the Certkiller network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network. Which of the conditions below have to be met in o
Sequence number - Window size - and Acknowledgment number
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.
SMTP FTP and HTTP
The port is experiencing errors

21. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
The system is malfunctioning.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
100 meters

22. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Packet switching - Packet filtering and Internetwork communication.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Auto - Desirable - and On

23. 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?
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.
This is an Ethernet port operating at half duplex
TCP
The interfaces must be configured for NAT.

24. 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.
This is an Ethernet port operating at half duplex
Source Port - Acknowledgment Number - and Window
Port security

25. Which of the following correctly describe steps in the OSI date encapsulation process?
CertK Switch(config)# ip default-gateway 192.168.1.115
A cross-over cable
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.
The switch will forward the frame to a specific port

26. As a CCNA candidate - you must know the various layers of the OSI model. At which layers of the OSI model do Wide Area Networks operate in?
Device Identifiers - Capabilities list - Platform
Physical Layer and Datalink Layer
A hub and A repeater.
ARP and ICMP

27. Why is full-duplex Ethernet superior to its single-duplex counterpart?
It operates without collisions and It provides faster data transfer
Buffering - Cut-through - and Congestion avoidance
100 meters
VTP will allow switches to share VLAN configuration information

28. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Network
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.
Application
STP

29. Which of the following devices can the Certkiller network administrator use to segment the LAN?
The network layer
Packet switching - Packet filtering and Internetwork communication.
Switches increase the number of collision domains in the network.
Switches - Bridges - and Routers

30. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Serial0/1 is down - line protocol is down
To allow remote management of the switch.
The Bridgeg ID and The bridge priority
Learning - Listening - and Forwarding

31. Which of the protocols below use TCP at the transport layer?
SMTP - FTP - HTTP - and HTTPS
Auto - Desirable - and On
Switches - Bridges - and Routers
It is the sum of the costs based on bandwidth

32. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
Configure the switch so that it has a lower priority than other switches in the network.
Serial0/1 is down - line protocol is down
A broadcast address will never be the source address of a frame

33. A Certkiller switch is configured with all ports assigned to VLAN 2. In addition - all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
A hub and A repeater.
SMTP - FTP - HTTP - and HTTPS
All switch and bridge ports are in either the forwarding or blocking state.
An additional broadcast domain will be created.

34. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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.
Configure the switch so that it has lower priority than other switches in the network
Path selections and Packet switching.

35. 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.
In an improperly implemented redundant topology
Data link
A hub and A repeater.

36. You download a file from an FTP site on the Internet. What is the highest layer in the OSI model used in this FTP operations?
Application
Increased latency and Filtering of all frame errors
Switches increase the number of collision domains in the network.
Congestion avoidance - Windowing and Buffering

37. In a switched LAN network - What is the Spanning-Tree algorithm used for?
VTP will allow switches to share VLAN configuration information
It is used to prevent switching loops in networks with redundant switched routes.
A broadcast address will never be the source address of a frame
The system is malfunctioning.

38. As a CCNA candidate - you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model?
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.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.
Telnet and FTP

39. 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?
The network layer
Congestion avoidance - Windowing and Buffering
Duplex mismatch
Port security

40. Which of the following are true of Ethernet technology?
Hosts use a logical bus topology
Learning - Listening - and Forwarding
Fiber optic cable.
Certkiller B > trace

41. 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?
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.
Layer 3
Switches increase the number of collision domains in the network.
Auto - On - and Desirable

42. You want to influence the root bridge selection within the Certkiller LAN. Which two values are used by spanning tree protocol to elect a root bridge? (Choose two.)
Switches usually have a higher number of ports then most bridges - Both bridges and switches forward Layer 2 broadcasts and Both bridges and switches make forwarding decisions based on Layer 2 addresses.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
HTTPS - SMTP - and TFTP
MAC Address and Bridge Priority

43. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Switches usually have a higher number of ports then most bridges - Both bridges and switches forward Layer 2 broadcasts and Both bridges and switches make forwarding decisions based on Layer 2 addresses.
Auto - Desirable - and On
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

44. Network equipment supporting the use of flow control mechanisms has been recently installed in the CK network. What is the purpose of flow control in a data network?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Port security
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
Increased latency and Filtering of all frame errors

45. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
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.
Path selections and Packet switching.
Network

46. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
The system is malfunctioning.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Layer 4
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

47. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
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.
A cross-over cable
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.
In an improperly implemented redundant topology

48. The Certkiller network administrator needs to a switch named CK1 to become the root bridge for a redundant path switched network. What can be done to ensure that CK1 will always assume the role as the root bridge?
Layer 4
Configure the switch so that it has lower priority than other switches in the network
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Data link

49. 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?
802.3ab and 802.3z
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.
TCP
Switches - Bridges - and Routers

50. 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
Switches increase the number of collision domains in the network.
Switches increase the number of collision domains in the network.
The network layer
The system is malfunctioning.