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 the primary reason for developing IPv6?
The physical address is added.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. servers b. routers c. network printers
It has expanded adressing capabilities.

2. What method of signal transmission uses radio waves to carry signals?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Rollover cable
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
Wireless

3. When do changes take effect in a Cisco router?
Time-to-live (TTL)
DNS
As the commands are entered.
Static

4. There are too many broadcasts on switches - what can be done?
Identify processes or services that are communicating with end devices.
A. replace a switch w/ a router b. subnet the new networks
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
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

5. 2 characteristics of clients in data networks
A. they initiate data exchanges b. they may upload data to servers
Binary ANDing
A. goodput b. throughput c. bandwidth
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

6. In a connectionless system - What is correct?
A. minimizing of collisions b. division into broadcast domains
Destination is not contacted before a packet is sent.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Ctrl + Shift + 6

7. How many bits make up an IPv4 address?
32 bits
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Rollover cable
A. next-hop b. metric/interface c. destination network address

8. 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?
Router
Destination is not contacted before a packet is sent.
Create signals that represent the bits in each frame for the media.
A. show startup-config b. show running-config

9. What is the purpose of the TCP/IP Network Application Layer?
Network Layer
Network Access
Network Media Control
A physical topology.

10. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
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
Any device whose backoff timer expires first.

11. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Next-Hop Address
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network Layer Packet

12. What info is found in the TCP and UDP header info?
Signal loss can be experienced.
Source and Destination Ports
A. flow control b. session establishment c. numbering and sequencing
Switch

13. What is a benefit of a WAN?
Twisting of the cables
A. HTTP b. HTTPS
OTDR
Host mobility

14. What are 2 forms of application layer software?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. application b. services
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
FTP

15. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
Source and Destination IP address
The destination host address.
TCP initializes the sequence numbers for the sessions.

16. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
It uses support from the lower layers to distinguish between connections to the service.
Fiber
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A random delay helps prevent the stations from experiencing another collision during transmission.

17. Which device is used to create or divide broadcast domains?
UDP
A physical topology.
Router
A default gateway (router).

18. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
Originate data flow.
Resolve IPv4 addresses to MAC addresses.
Is used by the server to resolve names.

19. To make a console connection from a comp to a Cisco router - what cable should be used?
Physical
Rollover cable
A. it has centralized administration b. security is easier to enforce
172.16.192.160

20. What is an automated service that matches resource names w/ required IP addresses?
Binary ANDing
DNS
255.255.255.224
Network portion

21. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A random delay helps prevent the stations from experiencing another collision during transmission.
A. MTA b. SMTP
A. Physical b. Data Link

22. 3 statements about routes and their use
It does not support encryption.
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. DNS b. SMTP c. POP
UDP

23. What correctly describes a MAC address?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Router(config)# interface FastEthernet 0/1

24. What do end devices do?
A backbone cable.
Originate data flow.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Supports error detection.

25. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
Console
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
0 to 1023

26. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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. DNS b. SMTP c. POP

27. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
The magnetic field around the adjacent pairs of wire.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Console interface

28. What application layer protocol is used to support file transfers between client and server?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Network
FTP
A backbone cable.

29. 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. router discards the packet b. router forwards the packet out the interface indicated in the route entry
32 bits
They must wait until the first hosts finish transfering the media.
A. minimizing of collisions b. division into broadcast domains

30. 3 features of IPv6
A. larger address space b. data types and classes of service c. authentication and encryption
Network address
Window Size
A. HTTP b. HTTPS

31. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
A. DB 60 b. Winchester 15-pin c. smart serial
Source Port
Fiber

32. What type of routing uses information that is manually entered into the routing table?
A. non-deterministic b. less overhead c. collisions exist
Static
Source Port
A physical topology.

33. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
To prevent the receiver from being overwhelmed by incoming data.
IP is not properly installed
They must wait until the first hosts finish transfering the media.

34. Why are port numbers included in the TCP header of a segment?
DNS
UTP
To enable a receiving host to forward the data to the appropriate application.
Rollover cable

35. What causes crosstalk within cable pairs when using UTP?
A. performance degradation b. security issues c. host identification
The magnetic field around the adjacent pairs of wire.
A. media sharing b. logical topology
Fiber

36. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Binary ANDing
Transport
Destination Network Address
As the commands are entered.

37. What makes fiber preferable to copper for interconnecting buildings?
A. application b. services
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The physical address is added.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

38. What is a characteristic of a single-mode fiber-optic cable?
When connecting a host to a switch.
It uses lasers as the light source.
A. purpose b. geographic location c. ownership
Signal loss can be experienced.

39. 3 terms that define the forms of help available within the Cisco IOS
A. servers b. routers c. network printers
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Transport
A. hot keys b. context-sensitive c. command syntax check

40. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
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. it has centralized administration b. security is easier to enforce
The address of the router that the host will use to 'get to the other side'.

41. What is a protocol that provides connectionless network layer services?
IP Protocol
Destination Network Address
A. Physical b. Data Link
A. netstat -r b. route PRINT

42. Group of hosts that have identical bit patterns in the high order bits of their addresses
Is a layer of specific encapsulation.
DNS
Network
Resolve IPv4 addresses to MAC addresses.

43. What are key considering factors when grouping hosts into common networks?
Destination Network Address
255.255.255.0
A. purpose b. geographic location c. ownership
Destination is not contacted before a packet is sent.

44. What do you need to use for an initial configuration on a Cisco router?
Create signals that represent the bits in each frame for the media.
Router(config)# hostname Costas
The magnetic field around the adjacent pairs of wire.
Console interface

45. During a TCP session - if packets arrive out of order - what will happen?
A. they initiate data exchanges b. they may upload data to servers
The packets will be delivered and reassembled at destination.
A. performance degradation b. security issues c. host identification
A. the router will discard the packet b. the router will send a time exceeded message to the source host

46. What are 2 email components used to forward mail between servers?
IP Protocol
Window Size
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. MTA b. SMTP

47. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
As the commands are entered.
It provides for the exchange of data over a common local media.
Next-Hop Address

48. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Host A
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
A. goodput b. throughput c. bandwidth

49. 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. Physical b. Data Link
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

50. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. larger address space b. data types and classes of service c. authentication and encryption
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