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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 are 2 protocols for transfering web resources?
A. physical layer b. DLL layer
It provides for the exchange of data over a common local media.
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. HTTP b. HTTPS

2. What are 3 common problems w/ large networks?
It provides for the exchange of data over a common local media.
A. perform degradation b. security issues c. host identification
When connecting a host to a switch.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

3. Which 2 options represent Layer 4 addressing?
Signal loss can be experienced.
Hosts return to listen-before-transmit mode.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

4. Group of hosts that have identical bit patterns in the high order bits of their addresses
To enable a receiving host to forward the data to the appropriate application.
Network
A. servers b. routers c. network printers
Ctrl + Shift + 6

5. Network Protocols
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. media sharing b. logical topology
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The MAC protocol can be very simple.

6. What is the primary function of encapsulating packets into frames?
A. physical layer b. DLL layer
To facilitate the entry and exit of data on media.
80 (HTTP)
IP Protocol

7. What is PDU?
A. show startup-config b. show running-config
Is a layer of specific encapsulation.
RJ-45
A. physical layer b. DLL layer

8. 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. show startup-config b. show running-config
Network Media Control
It uses support from the lower layers to distinguish between connections to the service.
A. performance degradation b. security issues c. host identification

9. What is the primary purpose of ARP?
8
Resolve IPv4 addresses to MAC addresses.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

10. What statements describe the logical token-passing topology?
It provides for the exchange of data over a common local media.
A. enable mode b. priviledge executive mode
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

11. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Time-to-live (TTL)
A. low overhead b. connectionless
Collisions can decrease network performance.

12. When a device is moved from one network to the other...?
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
It provides interface between applications on either end of the network.
Source and Destination Ports
A. hot keys b. context-sensitive c. command syntax check

13. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
Network Media Control
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

14. What can be a problem that is reduced by adding end-to-end addressing?
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
Network
Network Media Control
It reduces unnecessary broadcasts.

15. What causes crosstalk within cable pairs when using UTP?
Router(config)# hostname Costas
To facilitate the entry and exit of data on media.
The physical address is added.
The magnetic field around the adjacent pairs of wire.

16. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
They must wait until the first hosts finish transfering the media.
MAC
A. media sharing b. logical topology

17. What do end devices do?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
When connecting a host to a switch.
The address of the router that the host will use to 'get to the other side'.
Originate data flow.

18. 3 measures of data transfer
A. it has centralized administration b. security is easier to enforce
It reduces unnecessary broadcasts.
Application Layer
A. goodput b. throughput c. bandwidth

19. Which characteristics describe fiber optic cable?
Destination is not contacted before a packet is sent.
Hosts return to listen-before-transmit mode.
A. DB 60 b. Winchester 15-pin c. smart serial
A. not affected by EMI of RFI b. most expensive type of LAN cabling

20. What are key considering factors when grouping hosts into common networks?
A. Physical b. Data Link
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. purpose b. geographic location c. ownership

21. What 2 type of cables would most commonly be used for new runs?
A. application b. services
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
Collisions can decrease network performance.
A. Cat5 UTP b. Cat6 UTP

22. What are 3 properties of contention-based media access for a shared 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
A. it has centralized administration b. security is easier to enforce
A. servers b. routers c. network printers
A. non-deterministic b. less overhead c. collisions exist

23. What is a characteristic of a single-mode fiber-optic cable?
To prevent the receiver from being overwhelmed by incoming data.
Destination is not contacted before a packet is sent.
A. purpose b. geographic location c. ownership
It uses lasers as the light source.

24. What is the purpose of the TCP/IP Network Application Layer?
UTP
Network Media Control
Time-to-live (TTL)
DNS

25. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. DNS b. SMTP c. POP
2046
Hub

26. Which type of cable is most often associated w/ fiber-optic cable?
A. HTTP b. HTTPS
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
A backbone cable.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

27. What is the purpose of resource records in DNS?
Transport
A. physical layer b. DLL layer
Is used by the server to resolve names.
Wireless

28. What are 2 features of User Diagram Protocol (UDP)?
Source and Destination Ports
IP Protocol
A. low overhead b. connectionless
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

29. What method of signal transmission uses radio waves to carry signals?
Wireless
It reduces unnecessary broadcasts.
RJ-45
It uses lasers as the light source.

30. 2 functions of encapsulation
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. 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. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Physical

31. 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?
DNS
A. goodput b. throughput c. bandwidth
Network Layer
172.16.192.160

32. What can you identify when you examine the Network Layer header?
The destination host address.
A. Cat5 UTP b. Cat6 UTP
Physical
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

33. What are the advantages of using a client-server model?
No collisions will occur on this link.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. it has centralized administration b. security is easier to enforce
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

34. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
Is used by the server to resolve names.
A. physical layer b. DLL layer
255.255.255.0

35. After an ethernet collision - which device has priority to transmit data?
A. low overhead b. connectionless
A. servers b. routers c. network printers
Any device whose backoff timer expires first.
Supports error detection.

36. How does the application layer on a server process multiple client requests for services?
Hosts return to listen-before-transmit mode.
A. netstat -r b. route PRINT
It uses support from the lower layers to distinguish between connections to the service.
Twisting of the cables

37. What command can be used to determine if the router has experienced any input or output errors?
The address of the router that the host will use to 'get to the other side'.
Show Interfaces
It does not support encryption.
Source and Destination Ports

38. What networking devices are recommended to be assigned static IP addresses?
A. DB 60 b. Winchester 15-pin c. smart serial
A. servers b. routers c. network printers
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Application Layer

39. What is an automated service that matches resource names w/ required IP addresses?
Network Access
SSH
A. it has centralized administration b. security is easier to enforce
DNS

40. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
255.255.255.224
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
0 to 1023
To facilitate the entry and exit of data on media.

41. What are 2 forms of application layer software?
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. application b. services
TCP initializes the sequence numbers for the sessions.
Show Interfaces

42. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. hot keys b. context-sensitive c. command syntax check
The destination host address.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
UDP

43. What are 3 pieces of info about a route contained in a routing table?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Router(config)# interface FastEthernet 0/1
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. next-hop b. metric/interface c. destination network address

44. What kind of problems are caused by excessive broadcast traffic on network segments?
It does not support encryption.
A. addressing b. error detection c. frame delimiting
It uses lasers as the light source.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

45. What does the IEEE 802.2 standard represent in Ethernet technologies?
Network Media Control
Logical Link Control sublayer
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
Destination is not contacted before a packet is sent.

46. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
Supports error detection.
Show Interfaces
Is used by the server to resolve names.

47. What type of routing uses information that is manually entered into the routing table?
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
Static
No collisions will occur on this link.
Network Layer Packet

48. Default Gateway is incorrect on the host - What is the impact on the communications?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Console interface
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Minimal delays in data delivery.

49. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Next-Hop Address
Network Layer
To facilitate the entry and exit of data on media.

50. Where is the IOS file stored at?
Flash
To prevent the receiver from being overwhelmed by incoming data.
The address of the router that the host will use to 'get to the other side'.
Resolve IPv4 addresses to MAC addresses.