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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 event occurs during the 3-way handshake?
Collisions can decrease network performance.
TCP initializes the sequence numbers for the sessions.
A. copper UTP b. optical fiber
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

2. 3 properties of peer-2-peer applications
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
Physical
They must wait until the first hosts finish transfering the media.
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

3. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
80 (HTTP)
A. media sharing b. logical topology

4. What is the role of the OSI Application Layer?
8
A. it has centralized administration b. security is easier to enforce
It provides interface between applications on either end of the network.
UTP

5. What are 2 commands used to view a host routing table?
The destination host address.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. netstat -r b. route PRINT
To enable a receiving host to forward the data to the appropriate application.

6. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
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
As the commands are entered.
Binary ANDing
Logical Link Control sublayer

7. What is a component of a routing table entry?
A. flow control b. session establishment c. numbering and sequencing
Router(config)# hostname Costas
Next-Hop Address
A. performance degradation b. security issues c. host identification

8. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. goodput b. throughput c. bandwidth
Window Size
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 physical address is added.

9. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
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
Physical
Source and Destination IP address

10. When is a straight-through cable used in a network?
When connecting a host to a switch.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Ctrl + Shift + 6
A physical topology.

11. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Switch
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
IP is not properly installed
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

12. What method of signal transmission uses radio waves to carry signals?
Wireless
A. the router will discard the packet b. the router will send a time exceeded message to the source host
The address of the router that the host will use to 'get to the other side'.
Identify processes or services that are communicating with end devices.

13. What is a characteristic of a single-mode fiber-optic cable?
255.255.255.0
Source Port
It uses lasers as the light source.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

14. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
80 (HTTP)
A. MTA b. SMTP
A. physical layer b. DLL layer
Physical

15. After an ethernet collision - which device has priority to transmit data?
Ctrl + Shift + 6
To prevent the receiver from being overwhelmed by incoming data.
Physical
Any device whose backoff timer expires first.

16. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Physical
Transport
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Host A

17. What device can check for faults - integrity and performance of media?
Network Layer Packet
A. replace a switch w/ a router b. subnet the new networks
Ctrl + Shift + 6
OTDR

18. What are 2 features of User Diagram Protocol (UDP)?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. low overhead b. connectionless
Destination Network Address
Minimal delays in data delivery.

19. What is a protocol that provides connectionless network layer services?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. DNS b. SMTP c. POP
TCP initializes the sequence numbers for the sessions.
IP Protocol

20. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
It provides interface between applications on either end of the network.
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
Network Layer Packet

21. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. low overhead b. connectionless
A random delay helps prevent the stations from experiencing another collision during transmission.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

22. What is the primary purpose of ARP?
A. MTA b. SMTP
Transport
Resolve IPv4 addresses to MAC addresses.
It does not support encryption.

23. What networking devices are recommended to be assigned static IP addresses?
Wireless
Show Interfaces
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. servers b. routers c. network printers

24. What is the primary reason for developing IPv6?
IP Protocol
A. Physical b. Data Link
It has expanded adressing capabilities.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

25. How does the application layer on a server process multiple client requests for services?
Show Interfaces
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Network Layer
It uses support from the lower layers to distinguish between connections to the service.

26. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Router(config)# interface FastEthernet 0/1
2046
A. router b. firewall
255.255.255.224

27. What are 2 protocols for transfering web resources?
UTP
80 (HTTP)
A. HTTP b. HTTPS
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

28. 2 most commonly used media types in ethernet 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
Any device whose backoff timer expires first.
A. copper UTP b. optical fiber
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

29. 3 features that allow TCP to realibly and accurately track the transmission of data
Rollover cable
Network Layer
A. Physical b. Data Link
A. flow control b. session establishment c. numbering and sequencing

30. Which combination of keys can be used to interrupt a ping or traceroute process?
Is a layer of specific encapsulation.
Ctrl + Shift + 6
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Rollover cable

31. What is the role of MTA in handling email?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Hub
A. Physical b. Data Link
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

32. When a device is moved from one network to the other...?
A. application b. services
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The address of the router that the host will use to 'get to the other side'.
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

33. If you have a small network w/ 3 computers...
Collisions can decrease network performance.
Supports error detection.
To prevent the receiver from being overwhelmed by incoming data.
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

34. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The magnetic field around the adjacent pairs of wire.
A. goodput b. throughput c. bandwidth

35. When do changes take effect in a Cisco router?
Router(config)# interface FastEthernet 0/1
As the commands are entered.
SSH
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

36. 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.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Transport
Ctrl + Shift + 6

37. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Hub
255.255.255.224
No collisions will occur on this link.

38. To make a console connection from a comp to a Cisco router - what cable should be used?
IP is not properly installed
Rollover cable
As the commands are entered.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

39. What do you need to use for an initial configuration on a Cisco router?
Identify processes or services that are communicating with end devices.
Console interface
Resolve IPv4 addresses to MAC addresses.
172.16.192.160

40. 2 functions of encapsulation
A. decentralized resources b. resource sharing w/o a dedicated server
Network Layer
A. the router will discard the packet b. the router will send a time exceeded message to the source host
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

41. What are key considering factors when grouping hosts into common networks?
To facilitate the entry and exit of data on media.
A. purpose b. geographic location c. ownership
A. Cat5 UTP b. Cat6 UTP
A. it has centralized administration b. security is easier to enforce

42. During encapsulation - what happens in the Data Link Layer?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
The physical address is added.
The MAC protocol can be very simple.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

43. What can you identify when you examine the Network Layer header?
It provides interface between applications on either end of the network.
Rollover cable
The destination host address.
To prevent the receiver from being overwhelmed by incoming data.

44. Important characteristic of UDP
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Minimal delays in data delivery.
SMB
Network Layer Packet

45. What is the primary rope of the physical layer in transmitting data?
RJ-45
Create signals that represent the bits in each frame for the media.
Console
32 bits

46. 2 features that make switches preferable to hubs
2046
A. it has centralized administration b. security is easier to enforce
Time-to-live (TTL)
A. minimizing of collisions b. division into broadcast domains

47. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
A. media sharing b. logical topology
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Router(config)# hostname Costas
Source and Destination Ports

48. What are the advantages of using a client-server model?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
DNS
A. it has centralized administration b. security is easier to enforce
To prevent the receiver from being overwhelmed by incoming data.

49. 3 facts about the network portion of an IPv4 address
A. the router will discard the packet b. the router will send a time exceeded message to the source host
MAC
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
It provides interface between applications on either end of the network.

50. 3 terms that define the forms of help available within the Cisco IOS
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. hot keys b. context-sensitive c. command syntax check
Is used by the server to resolve names.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info