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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. 2 characteristics of peer-2-peer
Host mobility
A. performance degradation b. security issues c. host identification
A. decentralized resources b. resource sharing w/o a dedicated server
A. not affected by EMI of RFI b. most expensive type of LAN cabling

2. Intermediary devices used to implement security between networks
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
Network portion
The destination host address.
A. router b. firewall

3. 3 protocols that operate in the application layer
Flash
A. DNS b. SMTP c. POP
A random delay helps prevent the stations from experiencing another collision during transmission.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

4. What type of routing uses information that is manually entered into the routing table?
Any device whose backoff timer expires first.
Network
Static
RJ-45

5. 3 common problems w/ a large network
Source and Destination IP address
A. performance degradation b. security issues c. host identification
A physical topology.
A. show startup-config b. show running-config

6. 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.
MAC
32 bits
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

7. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
SSH
A. decentralized resources b. resource sharing w/o a dedicated server
Network Layer Packet
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

8. When is a straight-through cable used in a network?
A. goodput b. throughput c. bandwidth
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
When connecting a host to a switch.
A. hot keys b. context-sensitive c. command syntax check

9. What characteristic of an UTP helps reduce interference?
Source and Destination Ports
A. hot keys b. context-sensitive c. command syntax check
Transport
Twisting of the cables

10. 2 functions of encapsulation
0 to 1023
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
SSH
A. Cat5 UTP b. Cat6 UTP

11. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Next-Hop Address
32 bits
It uses support from the lower layers to distinguish between connections to the service.
255.255.255.224

12. 3 statements about routes and their use
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. 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
The magnetic field around the adjacent pairs of wire.
Is used by the server to resolve names.

13. 3 primary functions of the data link layer encapsulation
It uses lasers as the light source.
It has expanded adressing capabilities.
A. show startup-config b. show running-config
A. addressing b. error detection c. frame delimiting

14. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Source and Destination Ports
Binary ANDing
Network Access
Network Layer

15. In business LANs - which connector is used w/ twisted-pair networking cable?
Network Media Control
SSH
RJ-45
SMB

16. What are the advantages of using a client-server model?
A. Cat5 UTP b. Cat6 UTP
Show Interfaces
A. hot keys b. context-sensitive c. command syntax check
A. it has centralized administration b. security is easier to enforce

17. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
It reduces unnecessary broadcasts.
It does not support encryption.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. enable mode b. priviledge executive mode

18. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
Physical
UTP
Network Layer
Network address

19. What is a characteristic of a single-mode 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
It uses lasers as the light source.
It reduces unnecessary broadcasts.
Network Layer

20. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Is used by the server to resolve names.
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 is a protocol that provides connectionless network layer services?
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
FTP
Minimal delays in data delivery.
IP Protocol

22. What is an automated service that matches resource names w/ required IP addresses?
Console interface
DNS
To prevent the receiver from being overwhelmed by incoming data.
A. performance degradation b. security issues c. host identification

23. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
TCP initializes the sequence numbers for the sessions.
Network address
A default gateway (router).
SMB

24. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
Identify processes or services that are communicating with end devices.
A backbone cable.
A. physical layer b. DLL layer

25. What networking devices are recommended to be assigned static IP addresses?
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 does not support encryption.
Application Layer
A. servers b. routers c. network printers

26. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. purpose b. geographic location c. ownership
Switch
Source Port
A. addressing b. error detection c. frame delimiting

27. What makes fiber preferable to copper for interconnecting buildings?
A. flow control b. session establishment c. numbering and sequencing
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. Cat5 UTP b. Cat6 UTP
A. low overhead b. connectionless

28. What 2 type of cables would most commonly be used for new runs?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. Cat5 UTP b. Cat6 UTP
A. minimizing of collisions b. division into broadcast domains
A. identifies the communicating applications b. identifies multiple conversations between the hosts

29. What are 2 forms of application layer software?
A. application b. services
Ctrl + Shift + 6
Router(config)# interface FastEthernet 0/1
A. Cat5 UTP b. Cat6 UTP

30. If you have a full-duplex operational network - what can happen?
RJ-45
Router
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
No collisions will occur on this link.

31. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. netstat -r b. route PRINT
They must wait until the first hosts finish transfering the media.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

32. When do changes take effect in a Cisco router?
Destination is not contacted before a packet is sent.
0 to 1023
IP is not properly installed
As the commands are entered.

33. 3 factors that should be considered when implementing Layer 2 protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The destination host address.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Collisions can decrease network performance.

34. 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. not affected by EMI of RFI b. most expensive type of LAN cabling
172.16.192.160
Identify processes or services that are communicating with end devices.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

35. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. it has centralized administration b. security is easier to enforce
Destination Network Address
Fiber
A. next-hop b. metric/interface c. destination network address

36. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
Flash
Rollover cable
The physical address is added.

37. What is a default gateway address?

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38. What can you identify when you examine the Network Layer header?
32 bits
The destination host address.
A backbone cable.
No collisions will occur on this link.

39. statements of IP adressing
255.255.255.224
Network Layer
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. low overhead b. connectionless

40. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. Cat5 UTP b. Cat6 UTP
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Logical Link Control sublayer
Transport

41. At which layer of the TCP/IP model does ethernet operate?
Network Access
A. netstat -r b. route PRINT
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
Is a layer of specific encapsulation.

42. What is the purpose of the preamble in an ethernet frame?
The MAC protocol can be very simple.
Router
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Hosts return to listen-before-transmit mode.

43. What is a benefit of a WAN?
Host mobility
Network Layer
Time-to-live (TTL)
A. Cat5 UTP b. Cat6 UTP

44. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. performance degradation b. security issues c. host identification
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
IP is not properly installed
Hosts return to listen-before-transmit mode.

45. What command can be used to determine if the router has experienced any input or output errors?
Network Layer Packet
Show Interfaces
The magnetic field around the adjacent pairs of wire.
A. flow control b. session establishment c. numbering and sequencing

46. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. larger address space b. data types and classes of service c. authentication and encryption
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
255.255.255.224
A physical topology.

47. Which layer supplies services and allows user interface?
Application Layer
Signal loss can be experienced.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Router

48. What can get you to an outside network?
A. performance degradation b. security issues c. host identification
Time-to-live (TTL)
A default gateway (router).
A. router b. firewall

49. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Next-Hop Address
A. Physical b. Data Link
A. flow control b. session establishment c. numbering and sequencing
2046

50. What is a component of a routing table entry?
Next-Hop Address
Identify the device that allows local network computers to communicate w/ devices in other networks.
The packets will be delivered and reassembled at destination.
2046

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CCNA - 2

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