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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 command is used to change the default name to 'Costas'?
A. HTTP b. HTTPS
UTP
Router(config)# hostname Costas
A random delay helps prevent the stations from experiencing another collision during transmission.

2. What kind of problems are caused by excessive broadcast traffic on network segments?
A. goodput b. throughput c. bandwidth
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Collisions can decrease network performance.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

3. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
It uses support from the lower layers to distinguish between connections to the service.
A. larger address space b. data types and classes of service c. authentication and encryption
A default gateway (router).

4. What is the role of MTA in handling email?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
When connecting a host to a switch.
It uses support from the lower layers to distinguish between connections to the service.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

5. 2 features that make switches preferable to hubs
Router(config)# interface FastEthernet 0/1
A. minimizing of collisions b. division into broadcast domains
A. HTTP b. HTTPS
The packets will be delivered and reassembled at destination.

6. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
Physical
Signal loss can be experienced.
A. next-hop b. metric/interface c. destination network address

7. What characteristic of an UTP helps reduce interference?
0 to 1023
A. application b. services
Twisting of the cables
It provides for the exchange of data over a common local media.

8. What is the primary reason for developing IPv6?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
IP Protocol
Network portion
It has expanded adressing capabilities.

9. What is the purpose of resource records in DNS?
Router
255.255.255.224
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Is used by the server to resolve names.

10. What are 3 pieces of info about a route contained in a routing table?
A. purpose b. geographic location c. ownership
A. next-hop b. metric/interface c. destination network address
32 bits
Rollover cable

11. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Network
Identify processes or services that are communicating with end devices.
Wireless

12. What makes fiber preferable to copper for interconnecting buildings?
Hosts return to listen-before-transmit mode.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Router
Destination is not contacted before a packet is sent.

13. 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. addressing b. error detection c. frame delimiting
A. physical layer b. DLL layer
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
OTDR

14. 3 facts about the network portion of an IPv4 address
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
The destination host address.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
The MAC protocol can be very simple.

15. What is the primary purpose of Layer 4?
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
Identify processes or services that are communicating with end devices.
A. hot keys b. context-sensitive c. command syntax check
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

16. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
Twisting of the cables
Wireless
When connecting a host to a switch.

17. What statements describe the logical token-passing topology?
Network portion
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
80 (HTTP)
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

18. What are 2 email components used to forward mail between servers?
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. MTA b. SMTP
It reduces unnecessary broadcasts.
A. DB 60 b. Winchester 15-pin c. smart serial

19. 3 characteristics of valid Ethernet Layer 2 addresses
32 bits
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
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. MTA b. SMTP

20. What type of network cable is used between a terminal and a console port?
The physical address is added.
Flash
SMB
Rollover cable

21. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
It reduces unnecessary broadcasts.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
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

22. To make a console connection from a comp to a Cisco router - what cable should be used?
Rollover cable
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Application Layer
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

23. What is an effect of improperly applying a network cable connector?
Signal loss can be experienced.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Static
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

24. What is a component of a routing table entry?
A. Physical b. Data Link
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
Next-Hop Address
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

25. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
172.16.192.160
Is a layer of specific encapsulation.
Originate data flow.

26. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Router
UTP
Network portion

27. What is a drawback of the CSMA/CD access method?
A. Physical b. Data Link
Collisions can decrease network performance.
A default gateway (router).
A. minimizing of collisions b. division into broadcast domains

28. What is the primary purpose of ARP?
A. perform degradation b. security issues c. host identification
Switch
Signal loss can be experienced.
Resolve IPv4 addresses to MAC addresses.

29. statements of IP adressing
Destination is not contacted before a packet is sent.
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
Fiber
MAC

30. What are the advantages of using a client-server model?
It uses support from the lower layers to distinguish between connections to the service.
A default gateway (router).
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. it has centralized administration b. security is easier to enforce

31. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. netstat -r b. route PRINT
Physical
The address of the router that the host will use to 'get to the other side'.
FTP

32. Why is flow control used for TCP data transfer?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
To prevent the receiver from being overwhelmed by incoming data.
A. they initiate data exchanges b. they may upload data to servers
Network Media Control

33. In a connectionless system - What is correct?
FTP
Destination is not contacted before a packet is sent.
Switch
Static

34. If you have a full-duplex operational network - what can happen?
No collisions will occur on this link.
Rollover cable
Static
It has expanded adressing capabilities.

35. What networking devices are recommended to be assigned static IP addresses?
UDP
A. servers b. routers c. network printers
A. show startup-config b. show running-config
A. goodput b. throughput c. bandwidth

36. If you have a small network w/ 3 computers...
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
Supports error detection.
The MAC protocol can be very simple.
A. low overhead b. connectionless

37. Which characteristics describe fiber optic cable?
Rollover cable
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Physical
IP Protocol

38. What is the primary function of encapsulating packets into frames?
Console interface
TCP initializes the sequence numbers for the sessions.
To facilitate the entry and exit of data on media.
Minimal delays in data delivery.

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

40. What is dinamically selected by the source host when forwarding data?
The destination host address.
Network
Source Port
Is used by the server to resolve names.

41. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
Destination is not contacted before a packet is sent.
SSH
They must wait until the first hosts finish transfering the media.

42. What are 2 features of User Diagram Protocol (UDP)?
A. performance 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
They must wait until the first hosts finish transfering the media.
A. low overhead b. connectionless

43. What are 2 commands used to view a host routing table?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The physical address is added.
It reduces unnecessary broadcasts.
A. netstat -r b. route PRINT

44. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
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. 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
A. flow control b. session establishment c. numbering and sequencing

45. 3 measures of data transfer
A. flow control b. session establishment c. numbering and sequencing
A. goodput b. throughput c. bandwidth
A. next-hop b. metric/interface c. destination network address
172.16.192.160

46. What is a protocol that provides connectionless network layer services?
Network Layer
A. non-deterministic b. less overhead c. collisions exist
IP Protocol
Transport

47. How does the application layer on a server process multiple client requests for services?
Physical
It uses support from the lower layers to distinguish between connections to the service.
A. non-deterministic b. less overhead c. collisions exist
Destination Network Address

48. How many bits make up an IPv4 address?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. perform degradation b. security issues c. host identification
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
32 bits

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
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.
Binary ANDing
UTP

50. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
A. flow control b. session establishment c. numbering and sequencing
A random delay helps prevent the stations from experiencing another collision during transmission.
SMB