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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 is a characteristic of a logical point-to-point topology?
The destination host address.
Binary ANDing
A. physical layer b. DLL layer
The MAC protocol can be very simple.

2. Statements that describe LAN
Application Layer
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
When connecting a host to a switch.

3. Which portion of the network layer address does a router use to forward packets?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Identify processes or services that are communicating with end devices.
No collisions will occur on this link.
Network portion

4. What is PDU?
Ctrl + Shift + 6
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
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
Is a layer of specific encapsulation.

5. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A physical topology.
It provides interface between applications on either end of the network.
It uses support from the lower layers to distinguish between connections to the service.

6. What layer encapsulates segments into packets?
Destination Network Address
A. DB 60 b. Winchester 15-pin c. smart serial
Network Layer
Any device whose backoff timer expires first.

7. Which combination of keys can be used to interrupt a ping or traceroute process?
Time-to-live (TTL)
Ctrl + Shift + 6
When connecting a host to a switch.
0 to 1023

8. 3 measures of data transfer
DNS
A. goodput b. throughput c. bandwidth
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Collisions can decrease network performance.

9. 3 statements of media acess control
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. replace a switch w/ a router b. subnet the new networks
Physical
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

10. What is the primary function of encapsulating packets into frames?
A. purpose b. geographic location c. ownership
To facilitate the entry and exit of data on media.
It has expanded adressing capabilities.
RJ-45

11. What method of signal transmission uses radio waves to carry signals?
Next-Hop Address
Wireless
FTP
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

12. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
A. replace a switch w/ a router b. subnet the new networks
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The MAC protocol can be very simple.

13. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. DB 60 b. Winchester 15-pin c. smart serial
SMB
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. non-deterministic b. less overhead c. collisions exist

14. What is the role of MTA in handling email?
A. larger address space b. data types and classes of service c. authentication and encryption
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. router b. firewall
It provides interface between applications on either end of the network.

15. An admin needs to keep contents private - which access method should he use?
Static
SSH
A. perform degradation b. security issues c. host identification
No collisions will occur on this link.

16. What is a benefit of a WAN?
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
Router
Host mobility
A. HTTP b. HTTPS

17. 3 properties of peer-2-peer applications
It has expanded adressing capabilities.
Network portion
OTDR
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

18. 2 characteristics of clients in data networks
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
32 bits
A. they initiate data exchanges b. they may upload data to servers
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

19. What statements describe the logical token-passing topology?
It provides interface between applications on either end of the network.
A. MTA b. SMTP
It reduces unnecessary broadcasts.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

20. Which 2 options represent Layer 4 addressing?
Is used by the server to resolve names.
UTP
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. identifies the communicating applications b. identifies multiple conversations between the hosts

21. 3 functions of the upper data link sublayer in the OSI model
A. addressing b. error detection c. frame delimiting
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Rollover cable
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

22. What correctly describes a MAC address?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A backbone cable.
To enable a receiving host to forward the data to the appropriate application.

23. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Physical
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Supports error detection.
A physical topology.

24. What is the purpose of resource records in DNS?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Is used by the server to resolve names.
Application Layer
A. router b. firewall

25. When destination network is not in the routing table - What are 2 actions the router might take?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Identify the device that allows local network computers to communicate w/ devices in other networks.
To prevent the receiver from being overwhelmed by incoming data.
A. application b. services

26. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Time-to-live (TTL)
A. MTA b. SMTP
A. enable mode b. priviledge executive mode
A. servers b. routers c. network printers

27. Network Protocols
IP is not properly installed
Destination Network Address
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Window Size

28. What is an effect of improperly applying a network cable connector?
Switch
Signal loss can be experienced.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
UDP

29. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Signal loss can be experienced.
A backbone cable.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Destination Network Address

30. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. next-hop b. metric/interface c. destination network address
IP is not properly installed

31. What are 3 common problems w/ large networks?
Is a layer of specific encapsulation.
A. router b. firewall
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. perform degradation b. security issues c. host identification

32. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Window Size
Network Layer Packet
80 (HTTP)
Ctrl + Shift + 6

33. statements of IP adressing
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. application b. services
Ctrl + Shift + 6
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

34. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Static
Rollover cable
UDP
A. copper UTP b. optical fiber

35. What is the role of the OSI Application Layer?
It provides interface between applications on either end of the network.
A physical topology.
A. Cat5 UTP b. Cat6 UTP
To prevent the receiver from being overwhelmed by incoming data.

36. To make a console connection from a comp to a Cisco router - what cable should be used?
Next-Hop Address
Rollover cable
Minimal delays in data delivery.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

37. What information is added during encapsulation at OSI Layer 3?
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
255.255.255.0
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Source and Destination IP address

38. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
No collisions will occur on this link.
Destination Network Address
8

39. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A physical topology.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
IP Protocol

40. 2 features that make switches preferable to hubs
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. minimizing of collisions b. division into broadcast domains
Host mobility
A. decentralized resources b. resource sharing w/o a dedicated server

41. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
To facilitate the entry and exit of data on media.
OTDR
Hub

42. Intermediary devices used to implement security between networks
A. router b. firewall
It uses lasers as the light source.
Router
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

43. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
It reduces unnecessary broadcasts.
A random delay helps prevent the stations from experiencing another collision during transmission.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Resolve IPv4 addresses to MAC addresses.

44. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
A. non-deterministic b. less overhead c. collisions exist
Destination is not contacted before a packet is sent.
A. minimizing of collisions b. division into broadcast domains

45. What are 2 protocols for transfering web resources?
Is a layer of specific encapsulation.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. HTTP b. HTTPS
OTDR

46. What determines the method of media access control?
Rollover cable
The destination host address.
A. media sharing b. logical topology
Collisions can decrease network performance.

47. Why is flow control used for TCP data transfer?
Network portion
To prevent the receiver from being overwhelmed by incoming data.
As the commands are entered.
A. servers b. routers c. network printers

48. If you have a small network w/ 3 computers...
Source and Destination IP address
255.255.255.224
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
Host A

49. What is an automated service that matches resource names w/ required IP addresses?
Binary ANDing
It reduces unnecessary broadcasts.
DNS
Host mobility

50. What application layer protocol is used to support file transfers between client and server?
SSH
172.16.192.160
FTP
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs