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 need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
VLAN and Swtich
Auto - On - and Desirable
The port is experiencing errors
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

2. 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

3. Which of the following are true of Ethernet technology?
802.3ab and 802.3z
SMTP - FTP - HTTP - and HTTPS
Hosts use a logical bus topology
Configure the switch so that it has lower priority than other switches in the network

4. 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?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Path selections and Packet switching.
The interfaces must be configured for NAT.
Physical Layer and Datalink Layer

5. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
The switch will forward the frame to a specific port
The system is malfunctioning.
802.1Q and ISL
Configure the switch so that it has lower priority than other switches in the network

6. 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?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
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

7. 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
Packet switching - Packet filtering and Internetwork communication.
The switch will forward the frame to a specific port
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 CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

8. What is the purpose of the spanning-tree algorithm in a switched LAN?
To prevent switching loops in networks with redundant switched paths.
Device Identifiers - Capabilities list - Platform
To allow remote management of the switch.
Telnet and FTP

9. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Encapsulations PPP and authentication CHAP
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
VTP will allow switches to share VLAN configuration information
Device Identifiers - Capabilities list - Platform

10. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Show arp and Show interface
Transport
Sequence number - Window size - and Acknowledgment number
Configure the switch so that it has lower priority than other switches in the network

11. 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?
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.
CertK Switch(config)# ip default-gateway 192.168.1.115
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.
Network

12. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
The Bridgeg ID and The bridge priority
The network layer
Network
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

13. 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
Application
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Fiber optic cable.

14. 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?
Sequence number - Window size - and Acknowledgment number
The sequence number in the TCP header.
Layer 4
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

15. 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?
Congestion avoidance - Windowing and Buffering
Layer 4
Configure the switch so that it has a lower priority than other switches in the 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.

16. 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?
ARP and ICMP
Layer 3
An electrical pulse indicates that the collision has cleared.
In an improperly implemented redundant topology

17. By default - which of the following factors determines the spanning-tree path cost?
Path selections and Packet switching.
Device Identifiers - Capabilities list - Platform
VLAN and Swtich
It is the sum of the costs based on bandwidth

18. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Switches increase the number of collision domains in the network.
This is an Ethernet port operating at half duplex
In an improperly implemented redundant topology
Source Port - Acknowledgment Number - and Window

19. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
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.
Physical Layer and Datalink Layer
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.
Information about a route should never be sent back in the direction from which the original update came.

20. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
ARP and ICMP
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Show cdp neighbor detail

21. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the 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
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 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
HTTPS - SMTP - and TFTP

22. Which OSI layer header contains the address of a destination host that is on another network?
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
VTP will allow switches to share VLAN configuration information
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.

23. Which of the following are types of flow control?
Switches increase the number of collision domains in the network.
CertK Switch(config)# ip default-gateway 192.168.1.115
Buffering - Cut-through - and Congestion avoidance
An additional broadcast domain will be created.

24. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
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.
Switches increase the number of collision domains in the 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 Bridgeg ID and The bridge priority

25. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Sequence number - Window size - and Acknowledgment number
The network layer
To allow remote management of the switch.
Auto - Desirable - and On

26. 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?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Certkiller B > trace
The interfaces must be configured for NAT.
It will prevent segment 1's broadcasts from getting to segment 2.

27. 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?
Network
Encapsulations PPP and authentication CHAP
Decrease the window size.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

28. 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?
Duplex mismatch
The network layer
Show cdp neighbor detail
Network

29. 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?
TCP
An electrical pulse indicates that the collision has cleared.
STP
Path selections and Packet switching.

30. Which protocol uses TCP port 443 at layer 4?
Increased latency and Filtering of all frame errors
HTTPS
SMTP FTP and HTTP
Layer 4

31. With regard to Ethernet media access methods - which of the following are true?
Configure the switch so that it has lower priority than other switches in the network
The sequence number in the TCP header.
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.

32. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Layer 4
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Packet switching - Packet filtering and Internetwork communication.
Encapsulations PPP and authentication CHAP

33. Which of the following correctly describe steps in the OSI date encapsulation process?
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.
Switches increase the number of collision domains in the network.
Source Port - Acknowledgment Number - and Window
Transport

34. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
The interfaces must be configured for NAT.
Sequence number - Window size - and Acknowledgment number
STP
Show arp and Show interface

35. 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
Data link
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Serial0/1 is down - line protocol is down
A hub and A repeater.

36. 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?
Fiber optic cable.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
TCP
Increased latency and Filtering of all frame errors

37. What are two characteristics of 'store and forward' switching?
802.1Q and ISL
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.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
The interfaces must be configured for NAT.

38. 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?
The port is experiencing errors
A cross-over cable
Auto - Desirable - and On
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

39. 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
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.
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 increase the number of collision domains in the network.

40. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
MAC Address and Bridge Priority
TCP
In an improperly implemented redundant topology
Switches - Bridges - and Routers

41. 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?
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.
Telnet and FTP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
100 meters

42. 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
Decrease the window size.
Duplex mismatch
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.
TCP

43. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
TCP
CertK Switch(config)# ip default-gateway 192.168.1.115

44. You need to perform some initial configuration tasks on a new Certkiller switch. What is the purpose of assigning an IP address to a switch?
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
To prevent switching loops in networks with redundant switched paths.
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.
To allow remote management of the switch.

45. 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?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Buffering - Cut-through - and Congestion avoidance
CertK Switch(config)# ip default-gateway 192.168.1.115
Layer 3

46. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
All switch and bridge ports are in either the forwarding or blocking state.
802.3ab and 802.3z
The port is experiencing errors
Transport

47. Which of the following devices can the Certkiller network administrator use to segment the LAN?
Port security
Encapsulations PPP and authentication CHAP
To allow remote management of the switch.
Switches - Bridges - and Routers

48. 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.)
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
MAC Address and Bridge Priority
Duplex mismatch
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

49. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Certkiller B > trace
Application
Serial0/1 is down - line protocol is down
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

50. 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?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Sequence number - Window size - and Acknowledgment number
Configure the switch so that it has a lower priority than other switches in the network.
Telnet and FTP