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CCNA - 2

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 process routers use to determine the subnet network address w/ an IP address and a subnet mask?
255.255.255.224
Binary ANDing
A. application b. services
A. hot keys b. context-sensitive c. command syntax check

2. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Rollover cable
It uses lasers as the light source.
Host A

3. What can you identify when you examine the Network Layer header?
Host mobility
The destination host address.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Signal loss can be experienced.

4. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. router b. firewall
Source and Destination Ports
Physical
A. show startup-config b. show running-config

5. 3 properties of peer-2-peer applications
A. servers b. routers c. network printers
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
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

6. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
It uses lasers as the light source.
TCP initializes the sequence numbers for the sessions.
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

7. 2 features that make switches preferable to hubs
Host mobility
8
A. minimizing of collisions b. division into broadcast domains
2046

8. What are key considering factors when grouping hosts into common networks?
Network Access
A. purpose b. geographic location c. ownership
A. router b. firewall
SMB

9. 3 factors that should be considered when implementing Layer 2 protocols
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. HTTP b. HTTPS
They must wait until the first hosts finish transfering the media.
Transport

10. What is a characteristic of a logical point-to-point topology?
Binary ANDing
Any device whose backoff timer expires first.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
The MAC protocol can be very simple.

11. What event occurs during the 3-way handshake?
Application Layer
Is a layer of specific encapsulation.
TCP initializes the sequence numbers for the sessions.
Wireless

12. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
To prevent the receiver from being overwhelmed by incoming data.
Network Layer
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

13. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
Host mobility
A. MTA b. SMTP
Collisions can decrease network performance.

14. 2 characteristics of peer-2-peer
SSH
Resolve IPv4 addresses to MAC addresses.
A. decentralized resources b. resource sharing w/o a dedicated server
Is used by the server to resolve names.

15. What networking devices are recommended to be assigned static IP addresses?
Network portion
Fiber
A. DNS b. SMTP c. POP
A. servers b. routers c. network printers

16. 3 measures of data transfer
A. HTTP b. HTTPS
Originate data flow.
A. goodput b. throughput c. bandwidth
A. application b. services

17. When destination network is not in the routing table - What are 2 actions the router might take?
Is a layer of specific encapsulation.
It uses lasers as the light source.
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

18. To make a console connection from a comp to a Cisco router - what cable should be used?
Router(config)# hostname Costas
Rollover cable
Network Layer Packet
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

19. What are 2 email components used to forward mail between servers?
A. it has centralized administration b. security is easier to enforce
A physical topology.
A. Physical b. Data Link
A. MTA b. SMTP

20. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
255.255.255.0
Fiber
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

21. What are 3 properties of contention-based media access for a shared media?
A. netstat -r b. route PRINT
A. replace a switch w/ a router b. subnet the new networks
Network
A. non-deterministic b. less overhead c. collisions exist

22. What type of routing uses information that is manually entered into the routing table?
A. decentralized resources b. resource sharing w/o a dedicated server
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Static
A. perform degradation b. security issues c. host identification

23. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Network Access
A. they initiate data exchanges b. they may upload data to servers

24. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
2046
SSH
A. DB 60 b. Winchester 15-pin c. smart serial

25. 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?
80 (HTTP)
A. servers b. routers c. network printers
Router(config)# hostname Costas
They must wait until the first hosts finish transfering the media.

26. When a device is moved from one network to the other...?
A physical topology.
A. flow control b. session establishment c. numbering and sequencing
Identify the device that allows local network computers to communicate w/ devices in 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

27. What determines the method of media access control?
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
It provides for the exchange of data over a common local media.
Source Port
A. media sharing b. logical topology

28. 2 characteristics of clients in data networks
Network Media Control
A. they initiate data exchanges b. they may upload data to servers
It uses lasers as the light source.
A physical topology.

29. Where is the IOS file stored at?
Flash
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. addressing b. error detection c. frame delimiting
Physical

30. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Any device whose backoff timer expires first.
A. flow control b. session establishment c. numbering and sequencing
255.255.255.224
TCP initializes the sequence numbers for the sessions.

31. During encapsulation - what happens in the Data Link Layer?
It provides for the exchange of data over a common local media.
The physical address is added.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Any device whose backoff timer expires first.

32. What command is used to change the default name to 'Costas'?
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
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Router(config)# hostname Costas
8

33. What is an effect of improperly applying a network cable connector?
A. application b. services
Resolve IPv4 addresses to MAC addresses.
Is a layer of specific encapsulation.
Signal loss can be experienced.

34. Which layer supplies services and allows user interface?
172.16.192.160
Next-Hop Address
Hosts return to listen-before-transmit mode.
Application Layer

35. Which type of cable is most often associated w/ fiber-optic cable?
The physical address is added.
A backbone cable.
A. show startup-config b. show running-config
Switch

36. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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 default gateway (router).
Transport

37. What is a characteristic of a single-mode fiber-optic cable?
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
It uses lasers as the light source.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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

38. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A random delay helps prevent the stations from experiencing another collision during transmission.
Wireless
Network Media Control
Identify processes or services that are communicating with end devices.

39. What type of network cable is used between a terminal and a console port?
Rollover cable
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Source and Destination Ports

40. What is the purpose of the preamble in an ethernet frame?
A. Physical b. Data Link
A. replace a switch w/ a router b. subnet the new networks
Host A
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

41. 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?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. netstat -r b. route PRINT
A. show startup-config b. show running-config
The destination host address.

42. What layer encapsulates segments into packets?
Network Layer
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
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. larger address space b. data types and classes of service c. authentication and encryption

43. What can get you to an outside network?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Twisting of the cables
A default gateway (router).
RJ-45

44. 3 features that allow TCP to realibly and accurately track the transmission of data
UDP
A. flow control b. session establishment c. numbering and sequencing
Source and Destination Ports
The packets will be delivered and reassembled at destination.

45. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
The MAC protocol can be very simple.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The destination host address.
Window Size

46. What do you need to use for an initial configuration on a Cisco router?
Rollover cable
Console interface
Ctrl + Shift + 6
RJ-45

47. 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
Next-Hop Address
Identify the device that allows local network computers to communicate w/ devices in other networks.

48. Which combination of keys can be used to interrupt a ping or traceroute process?
Network Layer Packet
Rollover cable
Ctrl + Shift + 6
A. purpose b. geographic location c. ownership

49. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
Binary ANDing
A. purpose b. geographic location c. ownership
Supports error detection.

50. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
MAC
255.255.255.0
A. Physical b. Data Link
A. show startup-config b. show running-config

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CCNA - 2

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