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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. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
172.16.192.160
A. the router will discard the packet b. the router will send a time exceeded message to the source host
UDP

2. 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
It has expanded adressing capabilities.
80 (HTTP)
Router(config)# interface FastEthernet 0/1

3. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Destination Network Address
A. larger address space b. data types and classes of service c. authentication and encryption
Is a layer of specific encapsulation.
Network Media Control

4. What device can check for faults - integrity and performance of media?
A backbone cable.
Hosts return to listen-before-transmit mode.
OTDR
UTP

5. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
As the commands are entered.
A. larger address space b. data types and classes of service c. authentication and encryption
Network portion
Hosts return to listen-before-transmit mode.

6. What is a characteristic of a single-mode fiber-optic cable?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
2046
8
It uses lasers as the light source.

7. What is a benefit of a WAN?
Signal loss can be experienced.
Collisions can decrease network performance.
The physical address is added.
Host mobility

8. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
TCP initializes the sequence numbers for the sessions.
255.255.255.0
Rollover cable
Router(config)# interface FastEthernet 0/1

9. What are 2 common characteristics associated w/ dynamic routing protocols?
A. it has centralized administration b. security is easier to enforce
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A physical topology.
Rollover cable

10. Which characteristics describe fiber optic cable?
A. decentralized resources b. resource sharing w/o a dedicated server
Minimal delays in data delivery.
A physical topology.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

11. What networking devices are recommended to be assigned static IP addresses?
A. replace a switch w/ a router b. subnet the new networks
IP Protocol
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. servers b. routers c. network printers

12. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
IP Protocol
To prevent the receiver from being overwhelmed by incoming data.
Network address
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

13. At which layer of the TCP/IP model does ethernet operate?
Network Access
It uses support from the lower layers to distinguish between connections to the service.
Flash
Switch

14. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Window Size
Supports error detection.
MAC
Source and Destination Ports

15. Where is the IOS file stored at?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. perform degradation b. security issues c. host identification
A. MTA b. SMTP
Flash

16. What can get you to an outside network?
A default gateway (router).
Network Media Control
Application Layer
A. application b. presentation c. session d. transmision e. network f. data link g. physical

17. What is the purpose of resource records in DNS?
It provides for the exchange of data over a common local media.
Minimal delays in data delivery.
Is used by the server to resolve names.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

18. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. replace a switch w/ a router b. subnet the new networks
A default gateway (router).
Console
Supports error detection.

19. What characteristic of an UTP helps reduce interference?
Ctrl + Shift + 6
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
32 bits
Twisting of the cables

20. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Binary ANDing
Hosts return to listen-before-transmit mode.
DNS

21. 3 functions of the upper data link sublayer in the OSI model
A. it has centralized administration b. security is easier to enforce
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. Cat5 UTP b. Cat6 UTP
When connecting a host to a switch.

22. When destination network is not in the routing table - What are 2 actions the router might take?
Identify processes or services that are communicating with end devices.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
255.255.255.0
To prevent the receiver from being overwhelmed by incoming data.

23. 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
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
8

24. What do end devices do?
Fiber
Source and Destination IP address
Originate data flow.
Physical

25. What is an automated service that matches resource names w/ required IP addresses?
DNS
A random delay helps prevent the stations from experiencing another collision during transmission.
Signal loss can be experienced.
Network Media Control

26. What is dinamically selected by the source host when forwarding data?
Source Port
Supports error detection.
Fiber
A. identifies the communicating applications b. identifies multiple conversations between the hosts

27. At which layers of the OSI model does ethernet operate?
It reduces unnecessary broadcasts.
A. replace a switch w/ a router b. subnet the new networks
A. physical layer b. DLL layer
Supports error detection.

28. What is PDU?
Is used by the server to resolve names.
Signal loss can be experienced.
Rollover cable
Is a layer of specific encapsulation.

29. What kind of problems are caused by excessive broadcast traffic on network segments?
It does not support encryption.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Next-Hop Address

30. Which 2 options represent Layer 4 addressing?
They must wait until the first hosts finish transfering the media.
A. they initiate data exchanges b. they may upload data to servers
A. identifies the communicating applications b. identifies multiple conversations between the hosts
The destination host address.

31. When is a straight-through cable used in a network?
A. perform degradation b. security issues c. host identification
When connecting a host to a switch.
255.255.255.224
IP is not properly installed

32. 3 statements about routes and their use
A. hot keys b. context-sensitive c. command syntax check
A. they initiate data exchanges b. they may upload data to servers
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
A. not affected by EMI of RFI b. most expensive type of LAN cabling

33. What command can be used to determine if the router has experienced any input or output errors?
A. servers b. routers c. network printers
A. DB 60 b. Winchester 15-pin c. smart serial
A. physical layer b. DLL layer
Show Interfaces

34. If there is a graphic representation of a company network wiring and equipment - What is this called?
FTP
Source Port
Console interface
A physical topology.

35. How many bits make up an IPv4 address?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Rollover cable
32 bits
Source and Destination IP address

36. Group of hosts that have identical bit patterns in the high order bits of their addresses
255.255.255.224
Create signals that represent the bits in each frame for the media.
Network
The MAC protocol can be very simple.

37. What 2 type of cables would most commonly be used for new runs?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. Cat5 UTP b. Cat6 UTP
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Is used by the server to resolve names.

38. If you have a full-duplex operational network - what can happen?
A. next-hop b. metric/interface c. destination network address
No collisions will occur on this link.
A. DB 60 b. Winchester 15-pin c. smart serial
Network Access

39. What describes the purpose of default route?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
UTP
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 are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
A. perform degradation b. security issues c. host identification
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
MAC

41. 3 features of IPv6
Signal loss can be experienced.
A. larger address space b. data types and classes of service c. authentication and encryption
Network Layer Packet
Physical

42. Statements that describe LAN
A. performance degradation b. security issues c. host identification
Flash
A. larger address space b. data types and classes of service c. authentication and encryption
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

43. What are 2 features of User Diagram Protocol (UDP)?
To enable a receiving host to forward the data to the appropriate application.
Static
A. low overhead b. connectionless
A. HTTP b. HTTPS

44. 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?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Host A
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Transport

45. What is an effect of improperly applying a network cable connector?
80 (HTTP)
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
To prevent the receiver from being overwhelmed by incoming data.
Signal loss can be experienced.

46. What information is added during encapsulation at OSI Layer 3?
Network address
Router(config)# interface FastEthernet 0/1
Source and Destination IP address
OTDR

47. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
Is used by the server to resolve names.
The address of the router that the host will use to 'get to the other side'.
A. they initiate data exchanges b. they may upload data to servers

48. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Signal loss can be experienced.
A. Physical b. Data Link
A. decentralized resources b. resource sharing w/o a dedicated server
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

49. What is the name of the application layer protocol used for file sharing on Microsoft 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
SMB
80 (HTTP)
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

50. Network Protocols
Destination Network Address
A. next-hop b. metric/interface c. destination network address
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