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 are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. servers b. routers c. network printers
A. Cat5 UTP b. Cat6 UTP
A. Physical b. Data Link
A. enable mode b. priviledge executive mode

2. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
172.16.192.160
A. minimizing of collisions b. division into broadcast domains

3. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
It provides for the exchange of data over a common local media.
Binary ANDing
A. identifies the communicating applications b. identifies multiple conversations between the hosts
IP is not properly installed

4. Which 2 options represent Layer 4 addressing?
A. Physical b. Data Link
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Hosts return to listen-before-transmit mode.

5. What application layer protocol is used to support file transfers between client and server?
A. DB 60 b. Winchester 15-pin c. smart serial
FTP
Host A
A. DNS b. SMTP c. POP

6. What describes the purpose of default route?
As the commands are entered.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. media sharing b. logical topology
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

7. What is the primary rope of the physical layer in transmitting data?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Create signals that represent the bits in each frame for the media.
Network Access
255.255.255.0

8. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The physical address is added.
Console
To prevent the receiver from being overwhelmed by incoming data.

9. If you have a full-duplex operational network - what can happen?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It provides for the exchange of data over a common local media.
No collisions will occur on this link.
Transport

10. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
Router(config)# interface FastEthernet 0/1
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

11. What correctly describes a MAC address?
Rollover cable
Hub
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
It has expanded adressing capabilities.

12. How many bits make up an IPv4 address?
Collisions can decrease network performance.
A. HTTP b. HTTPS
32 bits
RJ-45

13. When is a straight-through cable used in a network?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
The physical address is added.
When connecting a host to a switch.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

14. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
Hub
A. MTA b. SMTP
When connecting a host to a switch.

15. What command is used to change the default name to 'Costas'?
The destination host address.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A backbone cable.
Router(config)# hostname Costas

16. What is an automated service that matches resource names w/ required IP addresses?
A. show startup-config b. show running-config
DNS
When connecting a host to a switch.
Source and Destination IP address

17. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. minimizing of collisions b. division into broadcast domains
A. goodput b. throughput c. bandwidth
Destination Network Address

18. What is dinamically selected by the source host when forwarding data?
UDP
Source Port
A. enable mode b. priviledge executive mode
As the commands are entered.

19. What can you identify when you examine the Network Layer header?
The destination host address.
255.255.255.224
To prevent the receiver from being overwhelmed by incoming data.
IP is not properly installed

20. Which characteristics describe fiber optic cable?
Time-to-live (TTL)
8
A. not affected by EMI of RFI b. most expensive type of LAN cabling
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

21. What do end devices do?
FTP
Originate data flow.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. goodput b. throughput c. bandwidth

22. 3 terms that define the forms of help available within the Cisco IOS
0 to 1023
A. hot keys b. context-sensitive c. command syntax check
Is a layer of specific encapsulation.
It provides for the exchange of data over a common local media.

23. What can get you to an outside network?
0 to 1023
A. hot keys b. context-sensitive c. command syntax check
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A default gateway (router).

24. What does the IEEE 802.2 standard represent in Ethernet technologies?
Network portion
Logical Link Control sublayer
Wireless
Create signals that represent the bits in each frame for the media.

25. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. DB 60 b. Winchester 15-pin c. smart serial
A default gateway (router).
UTP
Network Media Control

26. What is the role of the OSI Application Layer?
The destination host address.
It provides interface between applications on either end of the network.
A. DB 60 b. Winchester 15-pin c. smart serial
Resolve IPv4 addresses to MAC addresses.

27. When destination network is not in the routing table - What are 2 actions the router might take?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Originate data flow.

28. At which layers of the OSI model does ethernet operate?
A backbone cable.
A. addressing b. error detection c. frame delimiting
A. Cat5 UTP b. Cat6 UTP
A. physical layer b. DLL layer

29. What are 2 forms of application layer software?
A. servers b. routers c. network printers
A. application b. services
Network
32 bits

30. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
Supports error detection.
Network Layer
Network address

31. Network Protocols
A. MTA b. SMTP
Network
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

32. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
A. larger address space b. data types and classes of service c. authentication and encryption
255.255.255.0
Host mobility

33. 3 factors that should be considered when implementing Layer 2 protocols
A. media sharing b. logical topology
A. physical layer b. DLL layer
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
255.255.255.0

34. 3 common problems w/ a large network
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. performance degradation b. security issues c. host identification
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Resolve IPv4 addresses to MAC addresses.

35. What type of routing uses information that is manually entered into the routing table?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network Layer
Static
Router

36. If you have a small network w/ 3 computers...
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
A. enable mode b. priviledge executive mode
The address of the router that the host will use to 'get to the other side'.
A. decentralized resources b. resource sharing w/o a dedicated server

37. What is the primary purpose of ARP?
A. perform degradation b. security issues c. host identification
Resolve IPv4 addresses to MAC addresses.
OTDR
SMB

38. What is PDU?
A. minimizing of collisions b. division into broadcast domains
A. flow control b. session establishment c. numbering and sequencing
Is a layer of specific encapsulation.
A. non-deterministic b. less overhead c. collisions exist

39. 3 features of IPv6
It uses lasers as the light source.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. larger address space b. data types and classes of service c. authentication and encryption
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

40. What device can check for faults - integrity and performance of media?
OTDR
A. flow control b. session establishment c. numbering and sequencing
Is a layer of specific encapsulation.
No collisions will occur on this link.

41. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
The magnetic field around the adjacent pairs of wire.
A. decentralized resources b. resource sharing w/o a dedicated server
0 to 1023

42. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Collisions can decrease network performance.
Network Layer
UDP
SMB

43. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. next-hop b. metric/interface c. destination network address
OTDR
Supports error detection.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

44. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
The destination host address.
Signal loss can be experienced.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A random delay helps prevent the stations from experiencing another collision during transmission.

45. What is the primary reason for developing IPv6?
It does not support encryption.
It has expanded adressing capabilities.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Host mobility

46. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
UTP
Hub
A. netstat -r b. route PRINT
It has expanded adressing capabilities.

47. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
OTDR
UDP
Originate data flow.

48. Which device is used to create or divide broadcast domains?
Physical
It provides interface between applications on either end of the network.
Router
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

49. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Identify processes or services that are communicating with end devices.
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
To prevent the receiver from being overwhelmed by incoming data.

50. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. decentralized resources b. resource sharing w/o a dedicated server
Logical Link Control sublayer
0 to 1023