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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. What 2 type of cables would most commonly be used for new runs?
Network Access
It provides interface between applications on either end of the network.
A backbone cable.
A. Cat5 UTP b. Cat6 UTP

2. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
It uses support from the lower layers to distinguish between connections to the service.
Collisions can decrease network performance.
It provides for the exchange of data over a common local media.
Hub

3. Which characteristics describe fiber optic cable?
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. application b. services
A. not affected by EMI of RFI b. most expensive type of LAN cabling
80 (HTTP)

4. What application layer protocol is used to support file transfers between client and server?
A. copper UTP b. optical fiber
FTP
Hosts return to listen-before-transmit mode.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

5. What command can be used to determine if the router has experienced any input or output errors?
80 (HTTP)
Console interface
Show Interfaces
Host A

6. What is the primary function of encapsulating packets into frames?
Network Access
To facilitate the entry and exit of data on media.
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
It reduces unnecessary broadcasts.

7. 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?
The packets will be delivered and reassembled at destination.
2046
A. DNS b. SMTP c. POP
Create signals that represent the bits in each frame for the media.

8. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Network Layer
A. minimizing of collisions b. division into broadcast domains
A. physical layer b. DLL layer
Hosts return to listen-before-transmit mode.

9. What type of routing uses information that is manually entered into the routing table?
Static
Network Media Control
A. netstat -r b. route PRINT
A. physical layer b. DLL layer

10. After an ethernet collision - which device has priority to transmit data?
It reduces unnecessary broadcasts.
Any device whose backoff timer expires first.
Resolve IPv4 addresses to MAC addresses.
The MAC protocol can be very simple.

11. At which layers of the OSI model does ethernet operate?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. physical layer b. DLL layer
Wireless
Next-Hop Address

12. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
SMB
Physical
UDP
A. low overhead b. connectionless

13. How does the application layer on a server process multiple client requests for services?
Application Layer
Next-Hop Address
A default gateway (router).
It uses support from the lower layers to distinguish between connections to the service.

14. What do end devices do?
Show Interfaces
A. low overhead b. connectionless
Originate data flow.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

15. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Identify the device that allows local network computers to communicate w/ devices in other networks.
UDP
Router

16. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Host mobility
The destination host address.

17. 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. the router will discard the packet b. the router will send a time exceeded message to the source host
80 (HTTP)
The packets will be delivered and reassembled at destination.
Twisting of the cables

18. Which layer supplies services and allows user interface?
Application Layer
A. replace a switch w/ a router b. subnet the new networks
FTP
A. netstat -r b. route PRINT

19. What networking devices are recommended to be assigned static IP addresses?
A. application b. services
A. servers b. routers c. network printers
The MAC protocol can be very simple.
A. media sharing b. logical topology

20. statements of IP adressing
SMB
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. it has centralized administration b. security is easier to enforce
No collisions will occur on this link.

21. What is a drawback of the CSMA/CD access method?
To enable a receiving host to forward the data to the appropriate application.
Collisions can decrease network performance.
Next-Hop Address
Ctrl + Shift + 6

22. Default Gateway is incorrect on the host - What is the impact on the communications?
Network Layer
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
IP Protocol

23. 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
A. hot keys b. context-sensitive c. command syntax check
A. media sharing b. logical topology
Network

24. What is the role of the OSI Application Layer?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. physical layer b. DLL layer
It provides interface between applications on either end of the network.
Originate data flow.

25. What are 3 common problems w/ large networks?
OTDR
A. larger address space b. data types and classes of service c. authentication and encryption
A. perform degradation b. security issues c. host identification
MAC

26. What device can check for faults - integrity and performance of media?
OTDR
It uses support from the lower layers to distinguish between connections to the service.
A. addressing b. error detection c. frame delimiting
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

27. Group of hosts that have identical bit patterns in the high order bits of their addresses
UTP
Network
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

28. What are 2 features of User Diagram Protocol (UDP)?
A physical topology.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. low overhead b. connectionless
A. copper UTP b. optical fiber

29. Which IP packet field will prevent endless loops?
Time-to-live (TTL)
Next-Hop Address
255.255.255.0
To enable a receiving host to forward the data to the appropriate application.

30. To make a console connection from a comp to a Cisco router - what cable should be used?
Logical Link Control sublayer
Collisions can decrease network performance.
Network portion
Rollover cable

31. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
It does not support encryption.
Application Layer
The address of the router that the host will use to 'get to the other side'.

32. If there is a graphic representation of a company network wiring and equipment - What is this called?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. purpose b. geographic location c. ownership
Hub
A physical topology.

33. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
Network Layer
A. media sharing b. logical topology
The address of the router that the host will use to 'get to the other side'.

34. What is dinamically selected by the source host when forwarding data?
172.16.192.160
Source Port
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Router(config)# hostname Costas

35. What is a component of a routing table entry?
It provides for the exchange of data over a common local media.
A. MTA b. SMTP
A. it has centralized administration b. security is easier to enforce
Next-Hop Address

36. What can get you to an outside network?
A default gateway (router).
As the commands are entered.
Network
A. Physical b. Data Link

37. 3 protocols that operate in the application layer
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. DNS b. SMTP c. POP
Host A
A backbone cable.

38. What is the purpose of a default gateway?
A. copper UTP b. optical fiber
Twisting of the cables
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Identify the device that allows local network computers to communicate w/ devices in other networks.

39. What info is found in the TCP and UDP header info?
Twisting of the cables
Source and Destination Ports
A. DB 60 b. Winchester 15-pin c. smart serial
Host mobility

40. What can be a problem that is reduced by adding end-to-end addressing?
It reduces unnecessary broadcasts.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Resolve IPv4 addresses to MAC addresses.
A default gateway (router).

41. During encapsulation - what happens in the Data Link Layer?
OTDR
A. servers b. routers c. network printers
The physical address is added.
Rollover cable

42. What is an automated service that matches resource names w/ required IP addresses?
Identify the device that allows local network computers to communicate w/ devices in other networks.
80 (HTTP)
Logical Link Control sublayer
DNS

43. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Host A
Destination Network Address
A. show startup-config b. show running-config

44. What is a benefit of a WAN?
A. addressing b. error detection c. frame delimiting
A physical topology.
Host mobility
Is used by the server to resolve names.

45. At which layer of the TCP/IP model does ethernet operate?
It uses support from the lower layers to distinguish between connections to the service.
Network Access
Logical Link Control sublayer
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

46. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
Physical
Application Layer
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

47. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Host mobility
Network address
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Router

48. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
A default gateway (router).
A. goodput b. throughput c. bandwidth
A backbone cable.

49. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Switch
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. enable mode b. priviledge executive mode
A. goodput b. throughput c. bandwidth

50. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. larger address space b. data types and classes of service c. authentication and encryption
Window Size
It provides for the exchange of data over a common local media.