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. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
MAC Address and Bridge Priority
HTTPS - SMTP - and TFTP
To allow remote management of the switch.

2. 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?
Transport
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.
Decrease the window size.
Application

3. What kind of cable should be used to establish a trunked line between two Catalyst switches?
Network
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
A cross-over cable
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.

4. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
To allow remote management of the switch.
802.1Q and ISL
Serial0/1 is down - line protocol is down
The interfaces must be configured for NAT.

5. 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
Hosts use a logical bus topology
Device Identifiers - Capabilities list - Platform
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Data link

6. 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?
Packet switching - Packet filtering and Internetwork communication.
Layer 3
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Device Identifiers - Capabilities list - Platform

7. By default - which of the following factors determines the spanning-tree path cost?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
It is the sum of the costs based on bandwidth
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.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

8. Which three of the protocols below belong to the application layer? (Select three answer choices)
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
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.
Show cdp neighbor detail
HTTPS - SMTP - and TFTP

9. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
Transport
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
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

10. 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
Layer 4
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

11. 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?
Increased latency and Filtering of all frame errors
Layer 3
Certkiller B > trace
Application

12. 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)
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
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
A cross-over cable
Show arp and Show interface

13. 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?
VTP will allow switches to share VLAN configuration information
Physical Layer and Datalink Layer
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Application

14. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
VLAN and Swtich
Switches increase the number of collision domains in the network.
Increased latency and Filtering of all frame errors
In an improperly implemented redundant topology

15. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
SMTP - FTP - HTTP - and HTTPS
100 meters
Application
Transport

16. 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?
Duplex mismatch
SMTP - FTP - HTTP - and HTTPS
An additional broadcast domain will be created.
VLAN and Swtich

17. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Switches increase the number of collision domains in the network.
Auto - Desirable - and On
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Telnet and FTP

18. In a switched LAN network - What is the Spanning-Tree algorithm used for?
SMTP FTP and HTTP
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
It is used to prevent switching loops in networks with redundant switched routes.

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?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Switches increase the number of collision domains in the network.
A broadcast address will never be the source address of a frame
Configure the switch so that it has a lower priority than other switches in the network.

20. Which of the following are spanning tree port states?
Configure the switch so that it has a lower priority than other switches in the network.
Learning - Listening - and Forwarding
Physical Layer and Datalink Layer
To prevent switching loops in networks with redundant switched paths.

21. Which protocol uses TCP port 443 at layer 4?
HTTPS
A cross-over cable
STP
Packet switching - Packet filtering and Internetwork communication.

22. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Device Identifiers - Capabilities list - Platform
Path selections and Packet switching.
HTTPS
STP

23. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
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
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.
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.
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.

24. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
To prevent switching loops in networks with redundant switched paths.

25. 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.)
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
TCP
MAC Address and Bridge Priority
Layer 4

26. Which of the following are true of Ethernet technology?
Device Identifiers - Capabilities list - Platform
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.
Hosts use a logical bus topology
Packet switching - Packet filtering and Internetwork communication.

27. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
Learning - Listening - and Forwarding
Switches increase the number of collision domains in the network.
Configure the switch so that it has lower priority than other switches in the network
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.

28. Which OSI layer header contains the address of a destination host that is on another 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.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
The interfaces must be configured for NAT.
Network

29. 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?
Source Port - Acknowledgment Number - and Window
To allow remote management of the switch.
CertK Switch(config)# ip default-gateway 192.168.1.115
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

30. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Packet switching - Packet filtering and Internetwork communication.
802.1Q and ISL
Device Identifiers - Capabilities list - Platform
Application

31. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
802.1Q and ISL
VTP will allow switches to share VLAN configuration information
Data link

32. 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.
It is used to prevent switching loops in networks with redundant switched routes.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
CertK Switch(config)# ip default-gateway 192.168.1.115

33. 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?
It is the sum of the costs based on bandwidth
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.
It is used to prevent switching loops in networks with redundant switched routes.

34. 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?
Telnet and FTP
Hosts use a logical bus topology
Sequence number - Window size - and Acknowledgment number
VTP

35. Which of the following correctly describe the various functions and virtues of a router?
Packet switching - Packet filtering and Internetwork communication.
Physical Layer and Datalink Layer
It will prevent segment 1's broadcasts from getting to segment 2.
To prevent switching loops in networks with redundant switched paths.

36. While troubleshooting a connectivity problem - the Certkiller network administrator notices that a port status LED on a Cisco Catalyst Series switch is alternating between green and amber. Which condition could this indicate?
The port is experiencing errors
Encapsulations PPP and authentication CHAP
The Bridgeg ID and The bridge priority
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.

37. 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
Buffering - Cut-through - and Congestion avoidance
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
STP

38. Which of the following services use TCP?
SMTP FTP and HTTP
To allow remote management of the switch.
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.
Certkiller B > trace

39. Which two of the following values does STP take into consideration when it elects the root bridge?
The Bridgeg ID and The bridge priority
VTP will allow switches to share VLAN configuration information
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Path selections and Packet switching.

40. Which of the following devices can the Certkiller network administrator use to segment the LAN?
The system is malfunctioning.
Switches - Bridges - and Routers
Layer 3
SMTP FTP and HTTP

41. 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?
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.
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.
ARP and ICMP
STP

42. 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
It is used to prevent switching loops in networks with redundant switched routes.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Path selections and Packet switching.

43. 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
Auto - On - and Desirable
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.
This is an Ethernet port operating at half duplex
The network layer

44. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
It operates without collisions and It provides faster data transfer
Show cdp neighbor detail
Sequence number - Window size - and Acknowledgment number
Network

45. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
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.
Certkiller B > trace
Network
Encapsulations PPP and authentication CHAP

46. Which of the following can lead to the contribution of LAN traffic congestion?
SMTP - FTP - HTTP - and HTTPS
CertK Switch(config)# ip default-gateway 192.168.1.115
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

47. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Auto - On - and Desirable
The port is experiencing errors
Fiber optic cable.
Serial0/1 is down - line protocol is down

48. While troubleshooting an issue in the Certkiller LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement - What is known about the network interface port?
This is an Ethernet port operating at half duplex
The switch will forward the frame to a specific port
Switches increase the number of collision domains in the network.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

49. CDP is running between two CK devices. What information is supplied by CDP?
Device Identifiers - Capabilities list - Platform
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Decrease the window size.
A broadcast address will never be the source address of a frame

50. 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
Network
Show arp and Show interface
HTTPS
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