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. 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. DNS b. SMTP c. POP
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Network Layer Packet
Hub

2. 3 functions of the upper data link sublayer in the OSI model
Binary ANDing
Show Interfaces
Signal loss can be experienced.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

3. What application layer protocol is used to support file transfers between client and server?
A. DB 60 b. Winchester 15-pin c. smart serial
A. non-deterministic b. less overhead c. collisions exist
FTP
Fiber

4. Statements that describe LAN
Switch
It reduces unnecessary broadcasts.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
DNS

5. 3 terms that define the forms of help available within the Cisco IOS
Hub
Router(config)# interface FastEthernet 0/1
A. hot keys b. context-sensitive c. command syntax check
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

6. Which device is used to create or divide broadcast domains?
Router
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A. decentralized resources b. resource sharing w/o a dedicated server
SMB

7. What method of signal transmission uses radio waves to carry signals?
As the commands are entered.
Router(config)# hostname Costas
Wireless
Network Access

8. What command can be used to determine if the router has experienced any input or output errors?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Network Media Control
Show Interfaces
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

9. What statements describe the logical token-passing topology?
To facilitate the entry and exit of data on media.
A. larger address space b. data types and classes of service c. authentication and encryption
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Network Layer Packet

10. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. addressing b. error detection c. frame delimiting
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Show Interfaces
Window Size

11. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. minimizing of collisions b. division into broadcast domains
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

12. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
A. show startup-config b. show running-config
Originate data flow.
A. minimizing of collisions b. division into broadcast domains
A. goodput b. throughput c. bandwidth

13. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. they initiate data exchanges b. they may upload data to servers
80 (HTTP)

14. What is the purpose of a default gateway?
Host A
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. larger address space b. data types and classes of service c. authentication and encryption
The physical address is added.

15. What command is used to change the default name to 'Costas'?
Source and Destination IP address
Console interface
Router(config)# hostname Costas
A. it has centralized administration b. security is easier to enforce

16. What is dinamically selected by the source host when forwarding data?
Source Port
A. DNS b. SMTP c. POP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Network Media Control

17. 2 characteristics of clients in data networks
A. they initiate data exchanges b. they may upload data to servers
A. it has centralized administration b. security is easier to enforce
Destination is not contacted before a packet is sent.
Router(config)# hostname Costas

18. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Window Size
They must wait until the first hosts finish transfering the media.
As the commands are entered.

19. What type of network cable is used between a terminal and a console port?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Signal loss can be experienced.
The magnetic field around the adjacent pairs of wire.
Rollover cable

20. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A backbone cable.

21. What is the purpose of the TCP/IP Network Application Layer?
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. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network Media Control
Create signals that represent the bits in each frame for the media.

22. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
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
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

23. Which characteristics describe fiber optic cable?
Logical Link Control sublayer
A. not affected by EMI of RFI b. most expensive type of LAN cabling
The packets will be delivered and reassembled at destination.
A. MTA b. SMTP

24. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. minimizing of collisions b. division into broadcast domains

25. What is an automated service that matches resource names w/ required IP addresses?
Fiber
A. addressing b. error detection c. frame delimiting
DNS
A. application b. presentation c. session d. transmision e. network f. data link g. physical

26. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Hosts return to listen-before-transmit mode.
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
Router(config)# interface FastEthernet 0/1
Any device whose backoff timer expires first.

27. What is the primary rope of the physical layer in transmitting data?
Router
Host A
Physical
Create signals that represent the bits in each frame for the media.

28. What describes the purpose of default route?
It uses lasers as the light source.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Flash
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

29. 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?
A. replace a switch w/ a router b. subnet the new networks
255.255.255.224
Host A
A physical topology.

30. Why are port numbers included in the TCP header of a segment?
A. DNS b. SMTP c. POP
Destination is not contacted before a packet is sent.
To enable a receiving host to forward the data to the appropriate application.
Binary ANDing

31. statements of IP adressing
Rollover cable
0 to 1023
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
FTP

32. What is the function of the DLL?
It provides for the exchange of data over a common local media.
Binary ANDing
UTP
Signal loss can be experienced.

33. What is PDU?
Is a layer of specific encapsulation.
To facilitate the entry and exit of data on media.
A. router b. firewall
A. goodput b. throughput c. bandwidth

34. When is a straight-through cable used in a network?
When connecting a host to a switch.
Rollover cable
A. netstat -r b. route PRINT
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

35. 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. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
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36. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Is a layer of specific encapsulation.
Hosts return to listen-before-transmit mode.
A backbone cable.
The destination host address.

37. In a connectionless system - What is correct?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Twisting of the cables
Destination is not contacted before a packet is sent.
Transport

38. What info is found in the TCP and UDP header info?
A random delay helps prevent the stations from experiencing another collision during transmission.
Source and Destination Ports
Binary ANDing
Router

39. 3 characteristics of valid Ethernet Layer 2 addresses
Static
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Rollover cable
The magnetic field around the adjacent pairs of wire.

40. When a network service fails - which port is most often used to access a router for management purposes?
Console
A. Cat5 UTP b. Cat6 UTP
A. MTA b. SMTP
A. replace a switch w/ a router b. subnet the new networks

41. What determines the method of media access control?
Router(config)# hostname Costas
To enable a receiving host to forward the data to the appropriate application.
A. media sharing b. logical topology
A. replace a switch w/ a router b. subnet the new networks

42. What is the primary purpose of ARP?
255.255.255.224
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Resolve IPv4 addresses to MAC addresses.

43. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. goodput b. throughput c. bandwidth
Originate data flow.
UDP
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

44. What are 2 email components used to forward mail between 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. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Time-to-live (TTL)
A. MTA b. SMTP

45. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Binary ANDing
TCP initializes the sequence numbers for the sessions.
Network address
A. HTTP b. HTTPS

46. To make a console connection from a comp to a Cisco router - what cable should be used?
A. media sharing b. logical topology
Rollover cable
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
It reduces unnecessary broadcasts.

47. An admin needs to keep contents private - which access method should he use?
2046
SSH
8
Signal loss can be experienced.

48. What are 2 commands used to view a host routing table?
Collisions can decrease network performance.
A. DB 60 b. Winchester 15-pin c. smart serial
When connecting a host to a switch.
A. netstat -r b. route PRINT

49. What can get you to an outside network?
Show Interfaces
A default gateway (router).
Signal loss can be experienced.
Create signals that represent the bits in each frame for the media.

50. During encapsulation - what happens in the Data Link Layer?
They must wait until the first hosts finish transfering the media.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The packets will be delivered and reassembled at destination.
The physical address is added.