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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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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. During a TCP session - if packets arrive out of order - what will happen?
Flash
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
The packets will be delivered and reassembled at destination.
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

2. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
It provides for the exchange of data over a common local media.
SSH
Network

3. Which device is used to create or divide broadcast domains?
A random delay helps prevent the stations from experiencing another collision during transmission.
2046
Router
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

4. What is a component of a routing table entry?
A. flow control b. session establishment c. numbering and sequencing
0 to 1023
Next-Hop Address
A. it has centralized administration b. security is easier to enforce

5. Which type of cable is most often associated w/ fiber-optic cable?
Identify processes or services that are communicating with end devices.
A backbone cable.
A. MTA b. SMTP
2046

6. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Resolve IPv4 addresses to MAC addresses.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Physical
Fiber

7. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
8
A backbone cable.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Is used by the server to resolve names.

8. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
The address of the router that the host will use to 'get to the other side'.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. Physical b. Data Link
OTDR

9. Which characteristics describe fiber optic cable?
Wireless
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
It provides interface between applications on either end of the network.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

10. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
UTP
Transport
A. Physical b. Data Link

11. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Static
SMB
Network portion
UTP

12. 2 functions of encapsulation
A. it has centralized administration b. security is easier to enforce
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
UDP
It does not support encryption.

13. 3 protocols that operate in the application layer
Transport
Network Media Control
A. DNS b. SMTP c. POP
It uses lasers as the light source.

14. What command is used to change the default name to 'Costas'?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Router(config)# hostname Costas
Router(config)# interface FastEthernet 0/1
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

15. 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
To enable a receiving host to forward the data to the appropriate application.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
OTDR
2046

16. 2 features that make switches preferable to hubs
A. decentralized resources b. resource sharing w/o a dedicated server
Source Port
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. minimizing of collisions b. division into broadcast domains

17. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. replace a switch w/ a router b. subnet the new networks
Source and Destination Ports
255.255.255.224

18. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
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
A. perform degradation b. security issues c. host identification
Network Access

19. 3 statements about routes and their use
Show Interfaces
Network portion
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
Next-Hop Address

20. What is a benefit of a WAN?
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
Host mobility
A. show startup-config b. show running-config
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

21. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Flash
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. DB 60 b. Winchester 15-pin c. smart serial

22. In a connectionless system - What is correct?
A. MTA b. SMTP
Destination is not contacted before a packet is sent.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
It reduces unnecessary broadcasts.

23. What is PDU?
Time-to-live (TTL)
Is a layer of specific encapsulation.
It has expanded adressing capabilities.
Source and Destination Ports

24. What is the function of the DLL?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
SSH
It provides for the exchange of data over a common local media.
FTP

25. 3 measures of data transfer
Minimal delays in data delivery.
A. goodput b. throughput c. bandwidth
A backbone cable.
A. perform degradation b. security issues c. host identification

26. When a device is moved from one network to the other...?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
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
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

27. To make a console connection from a comp to a Cisco router - what cable should be used?
A. router b. firewall
Rollover cable
Router
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

28. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Wireless
UTP

29. What is an effect of improperly applying a network cable connector?
MAC
Network
Signal loss can be experienced.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

30. In business LANs - which connector is used w/ twisted-pair networking cable?
Destination Network Address
RJ-45
Application Layer
Switch

31. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. performance degradation b. security issues c. host identification
A. larger address space b. data types and classes of service c. authentication and encryption
A default gateway (router).

32. What is the primary rope of the physical layer in transmitting data?
Rollover cable
Create signals that represent the bits in each frame for the media.
A. MTA b. SMTP
Network Layer Packet

33. When destination network is not in the routing table - What are 2 actions the router might take?
A. perform degradation b. security issues c. host identification
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
When connecting a host to a switch.
It uses lasers as the light source.

34. 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
A. perform degradation b. security issues c. host identification
Is used by the server to resolve names.
It provides for the exchange of data over a common local media.

35. What are 3 properties of contention-based media access for a shared media?
UDP
A. HTTP b. HTTPS
A. show startup-config b. show running-config
A. non-deterministic b. less overhead c. collisions exist

36. What 2 type of cables would most commonly be used for new runs?
Network portion
The destination host address.
Any device whose backoff timer expires first.
A. Cat5 UTP b. Cat6 UTP

37. What are the advantages of using a client-server model?
IP Protocol
RJ-45
Next-Hop Address
A. it has centralized administration b. security is easier to enforce

38. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
To enable a receiving host to forward the data to the appropriate application.
The packets will be delivered and reassembled at destination.
Any device whose backoff timer expires first.

39. Which portion of the network layer address does a router use to forward packets?
Network portion
Supports error detection.
255.255.255.0
Collisions can decrease network performance.

40. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Destination is not contacted before a packet is sent.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Network address

41. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. HTTP b. HTTPS
Network

42. 3 factors that should be considered when implementing Layer 2 protocols
A. physical layer b. DLL layer
A. addressing b. error detection c. frame delimiting
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

43. Intermediary devices used to implement security between networks
MAC
A. router b. firewall
It uses support from the lower layers to distinguish between connections to the service.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

44. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
IP Protocol
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Fiber
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

45. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. DNS b. SMTP c. POP
Hosts return to listen-before-transmit mode.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Fiber

46. 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. Cat5 UTP b. Cat6 UTP
A. Physical b. Data Link
They must wait until the first hosts finish transfering the media.
A. goodput b. throughput c. bandwidth

47. If you have a small network w/ 3 computers...
A. not affected by EMI of RFI b. most expensive type of LAN cabling
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
The address of the router that the host will use to 'get to the other side'.
80 (HTTP)

48. What do the intermediary devices in the network do?
A. DB 60 b. Winchester 15-pin c. smart serial
When connecting a host to a switch.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
SSH

49. What info is found in the TCP and UDP header info?
The destination host address.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Source and Destination Ports
A. not affected by EMI of RFI b. most expensive type of LAN cabling

50. 3 features of IPv6
It reduces unnecessary broadcasts.
A. larger address space b. data types and classes of service c. authentication and encryption
Source and Destination Ports
A. the router will discard the packet b. the router will send a time exceeded message to the source host

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CCNA - 2

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