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 dinamically selected by the source host when forwarding data?
Host A
Source Port
Network
8

2. What type of routing uses information that is manually entered into the routing table?
Router(config)# hostname Costas
Identify processes or services that are communicating with end devices.
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
Static

3. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. DNS b. SMTP c. POP
172.16.192.160
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A physical topology.

4. What is a protocol that provides connectionless network layer services?
MAC
Network address
IP Protocol
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

5. What do end devices do?
Originate data flow.
A. media sharing b. logical topology
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

6. 3 terms that define the forms of help available within the Cisco IOS
A. DNS b. SMTP c. POP
2046
The magnetic field around the adjacent pairs of wire.
A. hot keys b. context-sensitive c. command syntax check

7. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. purpose b. geographic location c. ownership
Transport

8. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Console
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
Fiber
FTP

9. statements of IP adressing
A. router b. firewall
It uses support from the lower layers to distinguish between connections to the service.
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
Network Media Control

10. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
Network Layer
Hosts return to listen-before-transmit mode.
Switch

11. 3 measures of data transfer
Create signals that represent the bits in each frame for the media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. goodput b. throughput c. bandwidth
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

12. During a TCP session - if packets arrive out of order - what will happen?
A default gateway (router).
The packets will be delivered and reassembled at destination.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. goodput b. throughput c. bandwidth

13. What characteristic of an UTP helps reduce interference?
Create signals that represent the bits in each frame for the media.
A. physical layer b. DLL layer
Twisting of the cables
Network Layer

14. When a network service fails - which port is most often used to access a router for management purposes?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
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
Console
A. if destination network is directly connected - router forwards packet to destination host b. if no route exists for the destination and the default route is present - packet if fowarded to the next-hop c. if the originating host has a default gate

15. What method of signal transmission uses radio waves to carry signals?
To enable a receiving host to forward the data to the appropriate application.
Time-to-live (TTL)
A. flow control b. session establishment c. numbering and sequencing
Wireless

16. What do you need to use for an initial configuration on a Cisco router?
Console interface
It does not support encryption.
Next-Hop Address
FTP

17. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
SMB
0 to 1023
A. Cat5 UTP b. Cat6 UTP

18. What can you identify when you examine the Network Layer header?
The destination host address.
Source Port
When connecting a host to a switch.
As the commands are entered.

19. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Router
Physical
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A physical topology.

20. Default Gateway is incorrect on the host - What is the impact on the communications?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Is a layer of specific encapsulation.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network Access

21. What causes crosstalk within cable pairs when using UTP?
The packets will be delivered and reassembled at destination.
The magnetic field around the adjacent pairs of wire.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
IP is not properly installed

22. 3 functions of the upper data link sublayer in the OSI model
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. flow control b. session establishment c. numbering and sequencing
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
UTP

23. 3 features of IPv6
A. larger address space b. data types and classes of service c. authentication and encryption
A. minimizing of collisions b. division into broadcast domains
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Switch

24. What is PDU?
0 to 1023
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Is a layer of specific encapsulation.
OTDR

25. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
UTP
80 (HTTP)

26. What are 2 common characteristics associated w/ dynamic routing protocols?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
It provides for the exchange of data over a common local media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. identifies the communicating applications b. identifies multiple conversations between the hosts

27. 2 characteristics of clients in data networks
A. DNS b. SMTP c. POP
A. they initiate data exchanges b. they may upload data to servers
Network Access
Rollover cable

28. What do the intermediary devices in the network do?
Network
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. physical layer b. DLL layer
A. enable mode b. priviledge executive mode

29. What makes fiber preferable to copper for interconnecting buildings?
Network Access
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The destination host address.
Originate data flow.

30. What statements describe the logical token-passing topology?
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. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

31. 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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. netstat -r b. route PRINT
UDP

32. 3 statements about the role of routers in the network
Router(config)# hostname Costas
It uses lasers as the light source.
Collisions can decrease network performance.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

33. What device can check for faults - integrity and performance of media?
It does not support encryption.
OTDR
A. physical layer b. DLL layer
Console

34. What application layer protocol is used to support file transfers between client and server?
FTP
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
OTDR
Create signals that represent the bits in each frame for the media.

35. What is the function of the DLL?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Identify processes or services that are communicating with end devices.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It provides for the exchange of data over a common local media.

36. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
A. replace a switch w/ a router b. subnet the new networks
A. purpose b. geographic location c. ownership
8
Network address

37. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
Host A
Physical
A. servers b. routers c. network printers
Identify processes or services that are communicating with end devices.

38. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Source and Destination Ports
Window Size
Physical
A. next-hop b. metric/interface c. destination network address

39. Why is flow control used for TCP data transfer?
8
To prevent the receiver from being overwhelmed by incoming data.
Identify the device that allows local network computers to communicate w/ devices in other networks.
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

40. What information is added during encapsulation at OSI Layer 3?
To prevent the receiver from being overwhelmed by incoming data.
Source and Destination IP address
A. copper UTP b. optical fiber
A. Physical b. Data Link

41. What correctly describes a MAC address?
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. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Minimal delays in data delivery.
They must wait until the first hosts finish transfering the media.

42. Where is the IOS file stored at?
Is used by the server to resolve names.
Flash
To prevent the receiver from being overwhelmed by incoming data.
A. addressing b. error detection c. frame delimiting

43. During encapsulation - what happens in the Data Link Layer?
It uses lasers as the light source.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. they initiate data exchanges b. they may upload data to servers
The physical address is added.

44. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Fiber
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Supports error detection.

45. What event occurs during the 3-way handshake?
A. they initiate data exchanges b. they may upload data to servers
IP is not properly installed
255.255.255.224
TCP initializes the sequence numbers for the sessions.

46. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
To facilitate the entry and exit of data on media.
Is a layer of specific encapsulation.
A. enable mode b. priviledge executive mode
A. performance degradation b. security issues c. host identification

47. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. show startup-config b. show running-config
Wireless
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Destination Network Address

48. At which layer of the TCP/IP model does ethernet operate?
172.16.192.160
Network Access
Ctrl + Shift + 6
A random delay helps prevent the stations from experiencing another collision during transmission.

49. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Router(config)# hostname Costas
Network address
A. DNS b. SMTP c. POP
A. the router will discard the packet b. the router will send a time exceeded message to the source host

50. If you have a full-duplex operational network - what can happen?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. low overhead b. connectionless
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
No collisions will occur on this link.