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 purpose of ARP?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Flash
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
Resolve IPv4 addresses to MAC addresses.

2. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
A. netstat -r b. route PRINT
Supports error detection.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

3. Statements that describe LAN
Rollover cable
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. application b. services
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

4. What layer encapsulates segments into packets?
A. servers b. routers c. network printers
Network Layer
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
FTP

5. Why are port numbers included in the TCP header of a segment?
255.255.255.224
To enable a receiving host to forward the data to the appropriate application.
Minimal delays in data delivery.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

6. When a network service fails - which port is most often used to access a router for management purposes?
Wireless
Console
8
It reduces unnecessary broadcasts.

7. What are 2 common characteristics associated w/ dynamic routing protocols?
The packets will be delivered and reassembled at destination.
Source and Destination IP address
Console interface
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

8. 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
It does not support encryption.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Signal loss can be experienced.

9. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Time-to-live (TTL)
Transport
Signal loss can be experienced.
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

10. 3 features of IPv6
A. larger address space b. data types and classes of service c. authentication and encryption
Source and Destination IP address
A. servers b. routers c. network printers
Console interface

11. What is dinamically selected by the source host when forwarding data?
Host mobility
Show Interfaces
Source Port
TCP initializes the sequence numbers for the sessions.

12. What is the purpose of resource records in DNS?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Is used by the server to resolve names.
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
Next-Hop Address

13. 2 characteristics of clients in data networks
Console
A. they initiate data exchanges b. they may upload data to servers
Physical
Network Layer

14. What is the role of the OSI Application Layer?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
It provides interface between applications on either end of the network.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
TCP initializes the sequence numbers for the sessions.

15. What connectors are commonly associated w/ Cisco's V.35 serial cables?
It reduces unnecessary broadcasts.
Resolve IPv4 addresses to MAC addresses.
A. DB 60 b. Winchester 15-pin c. smart serial
TCP initializes the sequence numbers for the sessions.

16. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Host A
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. enable mode b. priviledge executive mode
A default gateway (router).

17. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. physical layer b. DLL layer
A. Physical b. Data Link

18. Which layer supplies services and allows user interface?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Network Access
Application Layer
It reduces unnecessary broadcasts.

19. What are key considering factors when grouping hosts into common networks?
Collisions can decrease network performance.
A. purpose b. geographic location c. ownership
A. DNS b. SMTP c. POP
A. addressing b. error detection c. frame delimiting

20. statements of IP adressing
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
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
Binary ANDing
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

21. What kind of problems are caused by excessive broadcast traffic on network segments?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. they initiate data exchanges b. they may upload data to servers
Router

22. What are 3 properties of contention-based media access for a shared media?
Destination Network Address
A. non-deterministic b. less overhead c. collisions exist
A default gateway (router).
A. application b. presentation c. session d. transmision e. network f. data link g. physical

23. 3 characteristics of valid Ethernet Layer 2 addresses
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The physical address is added.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
0 to 1023

24. When destination network is not in the routing table - What are 2 actions the router might take?
Twisting of the cables
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Any device whose backoff timer expires first.

25. 2 functions of encapsulation
Network Layer Packet
Network address
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 uses lasers as the light source.

26. What is the primary reason for developing IPv6?
Destination Network Address
Any device whose backoff timer expires first.
A backbone cable.
It has expanded adressing capabilities.

27. What is a default gateway address?

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28. 3 statements about the role of routers in the network
SSH
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The packets will be delivered and reassembled at destination.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

29. When a device is moved from one network to the other...?
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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
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
Rollover cable

30. What are 2 features of User Diagram Protocol (UDP)?
Source and Destination Ports
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. low overhead b. connectionless
A. identifies the communicating applications b. identifies multiple conversations between the hosts

31. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
Time-to-live (TTL)
A. minimizing of collisions b. division into broadcast domains
Host A

32. 3 protocols that operate in the application layer
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. DNS b. SMTP c. POP
It reduces unnecessary broadcasts.
When connecting a host to a switch.

33. 3 terms that define the forms of help available within the Cisco IOS
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. hot keys b. context-sensitive c. command syntax check
UDP
A. Physical b. Data Link

34. What is a component of a routing table entry?
Static
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Next-Hop Address
A. media sharing b. logical topology

35. How does the application layer on a server process multiple client requests for services?
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
A. goodput b. throughput c. bandwidth
It uses support from the lower layers to distinguish between connections to the service.

36. What is the purpose of the preamble in an ethernet frame?
A. perform degradation b. security issues c. host identification
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
To enable a receiving host to forward the data to the appropriate application.
80 (HTTP)

37. What is a benefit of a WAN?
Host mobility
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. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

38. What is the function of the DLL?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
255.255.255.224
It provides for the exchange of data over a common local media.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

39. 3 statements of media acess control
Binary ANDing
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
Transport
A. Cat5 UTP b. Cat6 UTP

40. What can be a problem that is reduced by adding end-to-end addressing?
Fiber
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It reduces unnecessary broadcasts.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

41. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A random delay helps prevent the stations from experiencing another collision during transmission.
Router(config)# interface FastEthernet 0/1
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
Any device whose backoff timer expires first.

42. What type of routing uses information that is manually entered into the routing table?
Static
It uses lasers as the light source.
A. flow control b. session establishment c. numbering and sequencing
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

43. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. servers b. routers c. network printers
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Source and Destination Ports

44. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
A. hot keys b. context-sensitive c. command syntax check
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
172.16.192.160

45. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
Fiber
Originate data flow.
Source and Destination IP address

46. An admin needs to keep contents private - which access method should he use?
SSH
80 (HTTP)
A. media sharing b. logical topology
A. replace a switch w/ a router b. subnet the new networks

47. What device can check for faults - integrity and performance of media?
To facilitate the entry and exit of data on media.
Show Interfaces
OTDR
Application Layer

48. What is the purpose of the TCP/IP Network Application Layer?
255.255.255.0
8
Network Media Control
They must wait until the first hosts finish transfering the media.

49. What is PDU?
Next-Hop Address
Is a layer of specific encapsulation.
Physical
Create signals that represent the bits in each frame for the media.

50. 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. next-hop b. metric/interface c. destination network address
Identify the device that allows local network computers to communicate w/ devices in other networks.
172.16.192.160
A. router b. firewall