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. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
Source Port - Acknowledgment Number - and Window
Packet switching - Packet filtering and Internetwork communication.
802.3ab and 802.3z
All switch and bridge ports are in either the forwarding or blocking state.

2. 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
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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.
The network layer

3. 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?
The interfaces must be configured for NAT.
Physical Layer and Datalink Layer
Certkiller B > trace
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

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
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
A hub and A repeater.
The system is malfunctioning.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

5. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
All switch and bridge ports are in either the forwarding or blocking state.
Port security
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

6. 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?
Telnet and FTP
SMTP - FTP - HTTP - and HTTPS
The network layer
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

7. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Configure the switch so that it has a lower priority than other switches in the network.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
A broadcast address will never be the source address of a frame
802.1Q and ISL

8. 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

9. Which of the following devices can the Certkiller network administrator use to segment the LAN?
Telnet and FTP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Switches - Bridges - and Routers

10. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
It operates without collisions and It provides faster data transfer
In an improperly implemented redundant topology
Duplex mismatch
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

11. Why is full-duplex Ethernet superior to its single-duplex counterpart?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
An electrical pulse indicates that the collision has cleared.
Configure the switch so that it has lower priority than other switches in the network
It operates without collisions and It provides faster data transfer

12. Which fields are included in the TCP header?
ARP and ICMP
Source Port - Acknowledgment Number - and Window
Duplex mismatch
A broadcast address will never be the source address of a frame

13. In a switched LAN network - What is the Spanning-Tree algorithm used for?
Information about a route should never be sent back in the direction from which the original update came.
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 is used to prevent switching loops in networks with redundant switched routes.
The Bridgeg ID and The bridge priority

14. 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?
Certkiller B > trace
This is an Ethernet port operating at half duplex
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.
All switch and bridge ports are in either the forwarding or blocking state.

15. The Certkiller network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test?
Sequence number - Window size - and Acknowledgment number
MAC Address and Bridge Priority
VTP will allow switches to share VLAN configuration information
ARP and ICMP

16. 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
802.1Q and ISL
Port security

17. Which of the protocols below use TCP at the transport layer?
SMTP - FTP - HTTP - and HTTPS
The network layer
Configure the switch so that it has a lower priority than other switches in the network.
Switches - Bridges - and Routers

18. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
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.
Learning - Listening - and Forwarding
A cross-over cable

19. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Device Identifiers - Capabilities list - Platform
Layer 4
STP

20. 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
Configure the switch so that it has lower priority than other switches in the network
Data link
VTP

21. 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.)
Information about a route should never be sent back in the direction from which the original update came.
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
It is the sum of the costs based on bandwidth

22. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
802.3ab and 802.3z
The system is malfunctioning.
The Bridgeg ID and The bridge priority
This is an Ethernet port operating at half duplex

23. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
VTP will allow switches to share VLAN configuration information
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
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

24. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
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.
It will prevent segment 1's broadcasts from getting to segment 2.

25. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Layer 4
A cross-over cable
STP
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.

26. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Physical Layer and Datalink Layer
CertK Switch(config)# ip default-gateway 192.168.1.115
Auto - Desirable - and On
Transport

27. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Data link
Configure the switch so that it has a lower priority than other switches in the network.
TCP
Layer 4

28. 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?
Encapsulations PPP and authentication CHAP
A cross-over cable
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
The network layer

29. What is the IEEE standard associated with Gigabit Ethernet?
The switch will forward the frame to a specific port
Data link
802.3ab and 802.3z
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.

30. What kind of cable should be used to establish a trunked line between two Catalyst switches?
Configure the switch so that it has a lower priority than other switches in the network.
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.
Transport
A cross-over cable

31. 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
802.3ab and 802.3z
Show arp and Show interface
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Sequence number - Window size - and Acknowledgment number

32. As a network Admin - you will need to decide on the appropriate network devices to use. Which of the following correctly describes the roles of the devices in a WAN?
Learning - Listening - and Forwarding
SMTP FTP and HTTP
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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

33. 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
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
It is the sum of the costs based on bandwidth
Sequence number - Window size - and Acknowledgment number

34. 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?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Packet switching - Packet filtering and Internetwork communication.
Increased latency and Filtering of all frame errors
Serial0/1 is down - line protocol is down

35. 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?
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
Configure the switch so that it has lower priority than other switches in the network
It will prevent segment 1's broadcasts from getting to segment 2.
Show cdp neighbor detail

36. when files are transferred between a host and an FTP server - the data is divided into smaller pieces of transmission. As these pieces arrive at the destination host they must be reassembled to reconstruct the original file. What provides for the rea
Sequence number - Window size - and Acknowledgment number
Physical Layer and Datalink Layer
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 sequence number in the TCP header.

37. Certkiller users have noticed extremely slow network performance - intermittent connectivity - and connection losses. After entering the 'show interfaces' command - you notice that the Ethernet interface is configured as 100 Mbps full-duplex and that
Configure the switch so that it has a 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.
Duplex mismatch
All switch and bridge ports are in either the forwarding or blocking state.

38. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
Certkiller B > trace
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Application
802.3ab and 802.3z

39. Which of the following correctly describe the various functions and virtues of a router?
Congestion avoidance - Windowing and Buffering
Device Identifiers - Capabilities list - Platform
Packet switching - Packet filtering and Internetwork communication.
To allow remote management of the switch.

40. With regard to Ethernet media access methods - which of the following are true?
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.
Application
802.1Q and ISL
VTP

41. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
To prevent switching loops in networks with redundant switched paths.
Encapsulations PPP and authentication CHAP
Packet switching - Packet filtering and Internetwork communication.
Network

42. Both bridges are switches are being used throughout the CK LAN. Which of the following statements are true regarding bridges and switches in this network?
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.
Device Identifiers - Capabilities list - Platform
VLAN and Swtich
Switches - Bridges - and Routers

43. Although TCP segments are similar to UDP segments - TCP packets contains some additional fields. Which of the following are found in a TCP header - but not in a UDP header?
SMTP FTP and HTTP
Sequence number - Window size - and Acknowledgment number
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Switches increase the number of collision domains in the network.

44. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
Congestion avoidance - Windowing and Buffering
Transport
HTTPS
A broadcast address will never be the source address of a frame

45. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
HTTPS
Serial0/1 is down - line protocol is down
Auto - Desirable - and On
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.

46. 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?
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
Auto - Desirable - and On
Decrease the window size.
Switches - Bridges - and Routers

47. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
HTTPS
The system is malfunctioning.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
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.

48. 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?
Decrease the window size.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
The network layer

49. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Data link
Decrease the window size.
Packet switching - Packet filtering and Internetwork communication.

50. 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?
It is used to prevent switching loops in networks with redundant switched routes.
It operates without collisions and It provides faster data transfer
Switches increase the number of collision domains in the network.
The sequence number in the TCP header.