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. In a connectionless system - What is correct?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Destination is not contacted before a packet is sent.
A. DB 60 b. Winchester 15-pin c. smart serial

2. There are too many broadcasts on switches - what can be done?
Network Layer
Rollover cable
A. replace a switch w/ a router b. subnet the new networks
Transport

3. Where is the IOS file stored at?
A. Cat5 UTP b. Cat6 UTP
80 (HTTP)
Flash
A. identifies the communicating applications b. identifies multiple conversations between the hosts

4. 2 features that make switches preferable to hubs
As the commands are entered.
Source Port
A. physical layer b. DLL layer
A. minimizing of collisions b. division into broadcast domains

5. 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. perform degradation b. security issues c. host identification
It reduces unnecessary broadcasts.
A. show startup-config b. show running-config
It uses support from the lower layers to distinguish between connections to the service.

6. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
Collisions can decrease network performance.
It does not support encryption.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

7. What can be a problem that is reduced by adding end-to-end addressing?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Source and Destination Ports
It reduces unnecessary broadcasts.

8. During a TCP session - if packets arrive out of order - what will happen?
Source Port
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. perform degradation b. security issues c. host identification
The packets will be delivered and reassembled at destination.

9. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A backbone cable.
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
Network Layer Packet
Hosts return to listen-before-transmit mode.

10. Network Protocols
To enable a receiving host to forward the data to the appropriate application.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
They must wait until the first hosts finish transfering the media.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

11. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
UTP
Show Interfaces
A. goodput b. throughput c. bandwidth
MAC

12. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
A. copper UTP b. optical fiber
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Router
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

13. 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 default gateway (router).
The MAC protocol can be very simple.
172.16.192.160
OTDR

14. What command can be used to determine if the router has experienced any input or output errors?
A. addressing b. error detection c. frame delimiting
Show Interfaces
8
A. MTA b. SMTP

15. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
Twisting of the cables
As the commands are entered.
A. hot keys b. context-sensitive c. command syntax check

16. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Resolve IPv4 addresses to MAC addresses.
Network
Any device whose backoff timer expires first.
A. enable mode b. priviledge executive mode

17. What is a benefit of a WAN?
A default gateway (router).
The MAC protocol can be very simple.
A. copper UTP b. optical fiber
Host mobility

18. What correctly describes a MAC address?
A. DNS b. SMTP c. POP
A. servers b. routers c. network printers
A. performance degradation b. security issues c. host identification
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

19. What is a default gateway address?

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20. When a network service fails - which port is most often used to access a router for management purposes?
Source Port
A. DNS b. SMTP c. POP
A. replace a switch w/ a router b. subnet the new networks
Console

21. What is a protocol that provides connectionless network layer services?
IP Protocol
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
255.255.255.0
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

22. What networking devices are recommended to be assigned static IP addresses?
A. HTTP b. HTTPS
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. Physical b. Data Link
A. servers b. routers c. network printers

23. What makes fiber preferable to copper for interconnecting buildings?
DNS
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Physical
Wireless

24. 3 statements of media acess control
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
When connecting a host to a switch.
Twisting of the cables
Hosts return to listen-before-transmit mode.

25. What causes crosstalk within cable pairs when using UTP?
Time-to-live (TTL)
DNS
The magnetic field around the adjacent pairs of wire.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

26. What is PDU?
SMB
Switch
A. enable mode b. priviledge executive mode
Is a layer of specific encapsulation.

27. 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?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
To facilitate the entry and exit of data on media.
Rollover cable
They must wait until the first hosts finish transfering the media.

28. What is an automated service that matches resource names w/ required IP addresses?
It provides for the exchange of data over a common local media.
DNS
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
FTP

29. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Create signals that represent the bits in each frame for the media.
Hub
Fiber
Network address

30. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Router(config)# interface FastEthernet 0/1
Router

31. At which layers of the OSI model does ethernet operate?
Is used by the server to resolve names.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. physical layer b. DLL layer

32. What is the role of MTA in handling email?
172.16.192.160
Rollover cable
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

33. What do you need to use for an initial configuration on a Cisco router?
Console interface
OTDR
A. perform degradation b. security issues c. host identification
Application Layer

34. Group of hosts that have identical bit patterns in the high order bits of their addresses
Static
8
Network
Collisions can decrease network performance.

35. What can you identify when you examine the Network Layer header?
The destination host address.
UDP
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

36. In business LANs - which connector is used w/ twisted-pair networking cable?
Network Media Control
A. HTTP b. HTTPS
RJ-45
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

37. What layer encapsulates segments into packets?
MAC
Network Layer
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Rollover cable

38. What command is used to change the default name to 'Costas'?
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
Network Media Control
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Router(config)# hostname Costas

39. What do end devices do?
Network Access
Network Layer
Originate data flow.
UTP

40. 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?
A. application b. services
A. not affected by EMI of RFI b. most expensive type of LAN cabling
2046
Rollover cable

41. An admin needs to keep contents private - which access method should he use?
A. next-hop b. metric/interface c. destination network address
It provides for the exchange of data over a common local media.
A. servers b. routers c. network printers
SSH

42. Important characteristic of UDP
Console interface
The magnetic field around the adjacent pairs of wire.
Supports error detection.
Minimal delays in data delivery.

43. What is the purpose of resource records in DNS?
A. media sharing b. logical topology
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
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
Is used by the server to resolve names.

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?
Host A
OTDR
A. media sharing b. logical topology
Rollover cable

45. 3 characteristics of valid Ethernet Layer 2 addresses
Router
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
The physical address is added.

46. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
A. Cat5 UTP b. Cat6 UTP
Identify processes or services that are communicating with end devices.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

47. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
The magnetic field around the adjacent pairs of wire.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. enable mode b. priviledge executive mode

48. What event occurs during the 3-way handshake?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
TCP initializes the sequence numbers for the sessions.
Supports error detection.
Is a layer of specific encapsulation.

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A. application b. services
Hosts return to listen-before-transmit mode.
Binary ANDing
Collisions can decrease network performance.

50. What 2 type of cables would most commonly be used for new runs?
Static
A. minimizing of collisions b. division into broadcast domains
A. DB 60 b. Winchester 15-pin c. smart serial
A. Cat5 UTP b. Cat6 UTP