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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. 3 features that allow TCP to realibly and accurately track the transmission of data
Next-Hop Address
A. flow control b. session establishment c. numbering and sequencing
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

2. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
255.255.255.224
FTP
A backbone cable.
Hub

3. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
Network Media Control
Hub
255.255.255.224

4. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Rollover cable
Rollover cable

5. At which layer of the TCP/IP model does ethernet operate?
Network Access
A. decentralized resources b. resource sharing w/o a dedicated server
Network portion
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

6. What are 3 properties of contention-based media access for a shared media?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. non-deterministic b. less overhead c. collisions exist
Router(config)# interface FastEthernet 0/1
A. application b. presentation c. session d. transmision e. network f. data link g. physical

7. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
Minimal delays in data delivery.
A. show startup-config b. show running-config
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

8. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A. next-hop b. metric/interface c. destination network address
A. perform degradation b. security issues c. host identification
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

9. What event occurs during the 3-way handshake?
A. hot keys b. context-sensitive c. command syntax check
TCP initializes the sequence numbers for the sessions.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Identify processes or services that are communicating with end devices.

10. What is a default gateway address?

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11. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
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
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

12. During a TCP session - if packets arrive out of order - what will happen?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Router(config)# interface FastEthernet 0/1
The packets will be delivered and reassembled at destination.
IP Protocol

13. What determines the method of media access control?
The MAC protocol can be very simple.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
The physical address is added.
A. media sharing b. logical topology

14. 3 features of IPv6
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
The magnetic field around the adjacent pairs of wire.
A. larger address space b. data types and classes of service c. authentication and encryption
255.255.255.224

15. How does the application layer on a server process multiple client requests for services?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It uses support from the lower layers to distinguish between connections to the service.
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. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

16. Which combination of keys can be used to interrupt a ping or traceroute process?
It provides interface between applications on either end of the network.
Ctrl + Shift + 6
A. copper UTP b. optical fiber
Fiber

17. What is a benefit of a WAN?
A. minimizing of collisions b. division into broadcast domains
Host mobility
A backbone cable.
A. enable mode b. priviledge executive mode

18. What 2 type of cables would most commonly be used for new runs?
TCP initializes the sequence numbers for the sessions.
A. they initiate data exchanges b. they may upload data to servers
SSH
A. Cat5 UTP b. Cat6 UTP

19. What is the purpose of the preamble in an ethernet frame?
Destination is not contacted before a packet is sent.
Source and Destination Ports
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Network portion

20. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. they initiate data exchanges b. they may upload data to servers
Is used by the server to resolve names.
A. DB 60 b. Winchester 15-pin c. smart serial

21. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
A. perform degradation b. security issues c. host identification
Network Access
To enable a receiving host to forward the data to the appropriate application.

22. 3 facts about the network portion of an IPv4 address
The packets will be delivered and reassembled at destination.
Network
2046
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

23. 3 common problems w/ a large network
IP Protocol
A. performance degradation b. security issues c. host identification
A backbone cable.
Binary ANDing

24. What device can check for faults - integrity and performance of media?
Wireless
OTDR
When connecting a host to a switch.
To facilitate the entry and exit of data on media.

25. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
DNS
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A random delay helps prevent the stations from experiencing another collision during transmission.
Console

26. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. copper UTP b. optical fiber
SMB
The magnetic field around the adjacent pairs of wire.

27. What do end devices do?
Originate data flow.
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
Hosts return to listen-before-transmit mode.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

28. What are 2 commands used to view a host routing table?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
UTP
A. netstat -r b. route PRINT
A. larger address space b. data types and classes of service c. authentication and encryption

29. What information is added during encapsulation at OSI Layer 3?
Network portion
Source and Destination IP address
FTP
Application Layer

30. What is the function of the DLL?
Router(config)# hostname Costas
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
It provides for the exchange of data over a common local 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

31. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Hosts return to listen-before-transmit mode.
Time-to-live (TTL)
Originate data flow.
The address of the router that the host will use to 'get to the other side'.

32. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
80 (HTTP)
Source and Destination IP address
A. it has centralized administration b. security is easier to enforce

33. What is a characteristic of a single-mode fiber-optic cable?
MAC
It uses lasers as the light source.
A. larger address space b. data types and classes of service c. authentication and encryption
Router(config)# hostname Costas

34. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
The MAC protocol can be very simple.
A physical topology.
255.255.255.224
A. servers b. routers c. network printers

35. What type of routing uses information that is manually entered into the routing table?
Static
OTDR
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. they initiate data exchanges b. they may upload data to servers

36. What is the primary rope of the physical layer in transmitting data?
Create signals that represent the bits in each frame for the media.
A. Cat5 UTP b. Cat6 UTP
A. HTTP b. HTTPS
It has expanded adressing capabilities.

37. When is a straight-through cable used in a network?
UTP
Host mobility
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
When connecting a host to a switch.

38. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
FTP
UTP
A. they initiate data exchanges b. they may upload data to servers
A. low overhead b. connectionless

39. What is the proper order of the OSI Layers?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
The destination host address.
255.255.255.224
A. application b. presentation c. session d. transmision e. network f. data link g. physical

40. 3 measures of data transfer
Originate data flow.
To facilitate the entry and exit of data on media.
A. goodput b. throughput c. bandwidth
A. addressing b. error detection c. frame delimiting

41. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Source and Destination IP address
Ctrl + Shift + 6
Network portion

42. 2 characteristics of clients in data networks
The packets will be delivered and reassembled at destination.
As the commands are entered.
A. HTTP b. HTTPS
A. they initiate data exchanges b. they may upload data to servers

43. What makes fiber preferable to copper for interconnecting buildings?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. netstat -r b. route PRINT
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

44. 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?
The physical address is added.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
172.16.192.160
TCP initializes the sequence numbers for the sessions.

45. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
MAC
Switch
The packets will be delivered and reassembled at destination.
Is a layer of specific encapsulation.

46. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
255.255.255.0
Is used by the server to resolve names.
Console
Any device whose backoff timer expires first.

47. What is a characteristic of a logical point-to-point topology?
A. performance degradation b. security issues c. host identification
A. router b. firewall
The MAC protocol can be very simple.
Fiber

48. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
A. application b. services
A. goodput b. throughput c. bandwidth
255.255.255.0

49. What kind of problems are caused by excessive broadcast traffic on network segments?
It uses lasers as the light source.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A backbone cable.

50. What statements describe the logical token-passing topology?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Signal loss can be experienced.
A. show startup-config b. show running-config
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other