Test your basic knowledge |

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. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
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
MAC
A. Physical b. Data Link
Host A

2. When a network service fails - which port is most often used to access a router for management purposes?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Router(config)# hostname Costas
Console
IP is not properly installed

3. What do end devices do?
A. purpose b. geographic location c. ownership
172.16.192.160
Originate data flow.
A. decentralized resources b. resource sharing w/o a dedicated server

4. 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?
172.16.192.160
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Supports error detection.
A. performance degradation b. security issues c. host identification

5. What can you identify when you examine the Network Layer header?
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
Flash
Console interface
The destination host address.

6. What method of signal transmission uses radio waves to carry signals?
A. addressing b. error detection c. frame delimiting
Wireless
2046
A. not affected by EMI of RFI b. most expensive type of LAN cabling

7. What is dinamically selected by the source host when forwarding data?
Source Port
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
A. router b. firewall

8. What is an effect of improperly applying a network cable connector?
80 (HTTP)
Signal loss can be experienced.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
They must wait until the first hosts finish transfering the media.

9. What event occurs during the 3-way handshake?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
TCP initializes the sequence numbers for the sessions.
Fiber
Create signals that represent the bits in each frame for the media.

10. What do you need to use for an initial configuration on a Cisco router?
Console interface
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
Rollover cable
A. HTTP b. HTTPS

11. What is a benefit of a WAN?
Host mobility
TCP initializes the sequence numbers for the sessions.
To facilitate the entry and exit of data on media.
Supports error detection.

12. What are 3 properties of contention-based media access for a shared media?
Time-to-live (TTL)
A. non-deterministic b. less overhead c. collisions exist
Console
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

13. What command can be used to determine if the router has experienced any input or output errors?
Create signals that represent the bits in each frame for the media.
Show Interfaces
Physical
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

14. What kind of problems are caused by excessive broadcast traffic on network segments?
Source and Destination IP address
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Originate data flow.
FTP

15. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Hosts return to listen-before-transmit mode.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A default gateway (router).

16. 2 characteristics of peer-2-peer
Show Interfaces
A backbone cable.
A. decentralized resources b. resource sharing w/o a dedicated server
They must wait until the first hosts finish transfering the media.

17. What correctly describes a MAC address?
Source and Destination IP address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Collisions can decrease network performance.
A. decentralized resources b. resource sharing w/o a dedicated server

18. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
The magnetic field around the adjacent pairs of wire.
A. enable mode b. priviledge executive mode
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

19. At which layers of the OSI model does ethernet operate?
Source and Destination IP address
To facilitate the entry and exit of data on media.
A. physical layer b. DLL layer
To enable a receiving host to forward the data to the appropriate application.

20. If there is a graphic representation of a company network wiring and equipment - What is this called?
Static
IP is not properly installed
A physical topology.
Host A

21. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. router b. firewall
UTP
UDP
A. DB 60 b. Winchester 15-pin c. smart serial

22. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
A. media sharing b. logical topology
A. the router will discard the packet b. the router will send a time exceeded message to the source host
As the commands are entered.
It reduces unnecessary broadcasts.

23. What type of network cable is used between a terminal and a console port?
A. replace a switch w/ a router b. subnet the new networks
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Rollover cable
Network portion

24. 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. it has centralized administration b. security is easier to enforce
Next-Hop Address
It has expanded adressing capabilities.

25. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
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
RJ-45
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
8

26. What is a component of a routing table entry?
A. media sharing b. logical topology
Next-Hop Address
A. enable mode b. priviledge executive mode
Resolve IPv4 addresses to MAC addresses.

27. In business LANs - which connector is used w/ twisted-pair networking cable?
Fiber
Create signals that represent the bits in each frame for the media.
Binary ANDing
RJ-45

28. What application layer protocol is used to support file transfers between client and server?
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
To facilitate the entry and exit of data on media.
A. decentralized resources b. resource sharing w/o a dedicated server
FTP

29. What is a drawback of the CSMA/CD access method?
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. DB 60 b. Winchester 15-pin c. smart serial
Collisions can decrease network performance.
A. application b. services

30. Which device is used to create or divide broadcast domains?
Identify processes or services that are communicating with end devices.
Router
IP Protocol
RJ-45

31. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Rollover cable
Binary ANDing
Network address
8

32. What is a disadvantage of Telnet?
IP is not properly installed
Originate data flow.
Show Interfaces
It does not support encryption.

33. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
The magnetic field around the adjacent pairs of wire.
To prevent the receiver from being overwhelmed by incoming data.
Router

34. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
Source and Destination Ports
A. media sharing b. logical topology
A. perform degradation b. security issues c. host identification

35. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
8
The packets will be delivered and reassembled at destination.
A. Physical b. Data Link

36. What is the primary purpose of ARP?
A. DNS b. SMTP c. POP
A. DB 60 b. Winchester 15-pin c. smart serial
Transport
Resolve IPv4 addresses to MAC addresses.

37. 3 characteristics of valid Ethernet Layer 2 addresses
It does not support encryption.
A. media sharing b. logical topology
To facilitate the entry and exit of data on media.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

38. What can get you to an outside network?
Next-Hop Address
A default gateway (router).
Source Port
A. enable mode b. priviledge executive mode

39. What are 2 email components used to forward mail between servers?
It provides interface between applications on either end of the network.
A. MTA b. SMTP
A. physical layer b. DLL layer
Console interface

40. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
A. it has centralized administration b. security is easier to enforce
IP Protocol
Logical Link Control sublayer

41. What is a characteristic of a logical point-to-point topology?
2046
The MAC protocol can be very simple.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

42. Where is the IOS file stored at?
Flash
Source and Destination IP address
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

43. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Binary ANDing
Supports error detection.
8
A. application b. presentation c. session d. transmision e. network f. data link g. physical

44. 3 primary functions of the data link layer encapsulation
Identify processes or services that are communicating with end devices.
A. addressing b. error detection c. frame delimiting
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
80 (HTTP)

45. What is the role of MTA in handling email?
OTDR
IP Protocol
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

46. What is a protocol that provides connectionless network layer services?
IP is not properly installed
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. physical layer b. DLL layer
IP Protocol

47. During a TCP session - if packets arrive out of order - what will happen?
OTDR
FTP
The packets will be delivered and reassembled at destination.
Originate data flow.

48. Statements that describe LAN
SMB
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Originate data flow.
Ctrl + Shift + 6

49. What is the purpose of the TCP/IP Network Application Layer?
Router(config)# interface FastEthernet 0/1
A. they initiate data exchanges b. they may upload data to servers
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Network Media Control

50. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. purpose b. geographic location c. ownership
Window Size
No collisions will occur on this link.