Test your basic knowledge |

CCNA - 2

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 is the primary reason for developing IPv6?
It has expanded adressing capabilities.
A. copper UTP b. optical fiber
A. DNS b. SMTP c. POP
SMB

2. Which combination of keys can be used to interrupt a ping or traceroute process?
2046
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Ctrl + Shift + 6
A. the router will discard the packet b. the router will send a time exceeded message to the source host

3. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Any device whose backoff timer expires first.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

4. What are 2 commands used to view a host routing table?
It reduces unnecessary broadcasts.
DNS
A. DNS b. SMTP c. POP
A. netstat -r b. route PRINT

5. What type of routing uses information that is manually entered into the routing table?
Hosts return to listen-before-transmit mode.
Static
Console interface
A. identifies the communicating applications b. identifies multiple conversations between the hosts

6. What makes fiber preferable to copper for interconnecting buildings?
Show Interfaces
A. decentralized resources b. resource sharing w/o a dedicated server
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

7. Which layer supplies services and allows user interface?
8
A. media sharing b. logical topology
Destination Network Address
Application Layer

8. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
Collisions can decrease network performance.
IP is not properly installed
Network address

9. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
Wireless
It provides interface between applications on either end of the network.
Transport

10. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. servers b. routers c. network printers
A backbone cable.
A. application b. services

11. What is the primary purpose of ARP?
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
Ctrl + Shift + 6
The address of the router that the host will use to 'get to the other side'.
Resolve IPv4 addresses to MAC addresses.

12. What is a characteristic of a logical point-to-point topology?
A. flow control b. session establishment c. numbering and sequencing
172.16.192.160
The MAC protocol can be very simple.
RJ-45

13. 3 statements about the role of routers in the network
FTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
A. flow control b. session establishment c. numbering and sequencing

14. What command can be used to determine if the router has experienced any input or output errors?
2046
Hosts return to listen-before-transmit mode.
Show Interfaces
A. next-hop b. metric/interface c. destination network address

15. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
The physical address is added.
Rollover cable
Binary ANDing
The destination host address.

16. 3 statements of media acess control
0 to 1023
It does not support encryption.
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

17. What 2 type of cables would most commonly be used for new runs?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. router b. firewall
A. media sharing b. logical topology
A. Cat5 UTP b. Cat6 UTP

18. What is the role of the OSI Application Layer?
Network Access
It provides interface between applications on either end of the network.
A. netstat -r b. route PRINT
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

19. What is the purpose of a default gateway?
Console interface
Identify the device that allows local network computers to communicate w/ devices in other networks.
Source and Destination Ports
Twisting of the cables

20. What are 3 pieces of info about a route contained in a routing table?
8
A. low overhead b. connectionless
A. next-hop b. metric/interface c. destination network address
Network Access

21. What device can check for faults - integrity and performance of media?
Create signals that represent the bits in each frame for the media.
A. replace a switch w/ a router b. subnet the new networks
Identify the device that allows local network computers to communicate w/ devices in other networks.
OTDR

22. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
Static

23. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
Supports error detection.
2046
Network Layer
It uses lasers as the light source.

24. What event occurs during the 3-way handshake?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. decentralized resources b. resource sharing w/o a dedicated server
Any device whose backoff timer expires first.
TCP initializes the sequence numbers for the sessions.

25. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
80 (HTTP)
A. replace a switch w/ a router b. subnet the new networks
It uses lasers as the light source.
It reduces unnecessary broadcasts.

26. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. low overhead b. connectionless
A random delay helps prevent the stations from experiencing another collision during transmission.
A default gateway (router).
Flash

27. What is the purpose of the preamble in an ethernet frame?
Router(config)# hostname Costas
Source Port
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Time-to-live (TTL)

28. What is dinamically selected by the source host when forwarding data?
Source Port
A. servers b. routers c. network printers
A. router b. firewall
It provides interface between applications on either end of the network.

29. At which layers of the OSI model does ethernet operate?
A. physical layer b. DLL layer
RJ-45
Destination is not contacted before a packet is sent.
255.255.255.0

30. What is an effect of improperly applying a network cable connector?
RJ-45
Fiber
Is used by the server to resolve names.
Signal loss can be experienced.

31. What is a characteristic of a single-mode fiber-optic cable?
A. media sharing b. logical topology
It uses lasers as the light source.
A. servers b. routers c. network printers
Identify processes or services that are communicating with end devices.

32. When a device is moved from one network to the other...?
Network Layer Packet
A. goodput b. throughput c. bandwidth
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network
Physical

33. Important characteristic of UDP
Minimal delays in data delivery.
Host mobility
Destination Network Address
A. Cat5 UTP b. Cat6 UTP

34. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
A. low overhead b. connectionless
A. enable mode b. priviledge executive mode
A. performance degradation b. security issues c. host identification

35. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
The magnetic field around the adjacent pairs of wire.
Hub
Network address
To facilitate the entry and exit of data on media.

36. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. show startup-config b. show running-config
Application Layer
Twisting of the cables
UTP

37. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
Next-Hop Address
Window Size
Static
They must wait until the first hosts finish transfering the media.

38. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
32 bits
Is used by the server to resolve names.
Transport

39. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. replace a switch w/ a router b. subnet the new networks
Hosts return to listen-before-transmit mode.
MAC
It uses support from the lower layers to distinguish between connections to the service.

40. What is the purpose of the TCP/IP Network Application Layer?
2046
Network Media Control
Hosts return to listen-before-transmit mode.
A. Cat5 UTP b. Cat6 UTP

41. Why are port numbers included in the TCP header of a segment?
A. minimizing of collisions b. division into broadcast domains
172.16.192.160
80 (HTTP)
To enable a receiving host to forward the data to the appropriate application.

42. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
Rollover cable
The MAC protocol can be very simple.
A backbone cable.

43. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
It uses lasers as the light source.
A. MTA b. SMTP
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Create signals that represent the bits in each frame for the media.

44. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. addressing b. error detection c. frame delimiting

45. What is an automated service that matches resource names w/ required IP addresses?
DNS
Resolve IPv4 addresses to MAC addresses.
A. purpose b. geographic location c. ownership
172.16.192.160

46. Which portion of the network layer address does a router use to forward packets?
It does not support encryption.
Any device whose backoff timer expires first.
Switch
Network portion

47. What is PDU?
A. physical layer b. DLL layer
Is a layer of specific encapsulation.
Minimal delays in data delivery.
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks

48. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Application Layer
255.255.255.224
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
IP is not properly installed

49. During a TCP session - if packets arrive out of order - what will happen?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The packets will be delivered and reassembled at destination.
A backbone cable.
A. decentralized resources b. resource sharing w/o a dedicated server

50. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
SMB
80 (HTTP)
A. next-hop b. metric/interface c. destination network address