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. Which layer supplies services and allows user interface?
DNS
Application Layer
SMB
No collisions will occur on this link.

2. What is a default gateway address?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

3. 3 facts about the network portion of an IPv4 address
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
OTDR
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. What are key considering factors when grouping hosts into common networks?
Any device whose backoff timer expires first.
Hosts return to listen-before-transmit mode.
A. physical layer b. DLL layer
A. purpose b. geographic location c. ownership

5. 3 characteristics of valid Ethernet Layer 2 addresses
A. replace a switch w/ a router b. subnet the new networks
It provides interface between applications on either end of the network.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. perform degradation b. security issues c. host identification

6. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Collisions can decrease network performance.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
MAC
Switch

7. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
Console
A. not affected by EMI of RFI b. most expensive type of LAN cabling
It does not support encryption.

8. When a device is moved from one network to the other...?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
It reduces unnecessary broadcasts.
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
Next-Hop Address

9. When destination network is not in the routing table - What are 2 actions the router might take?
A. they initiate data exchanges b. they may upload data to servers
A. flow control b. session establishment c. numbering and sequencing
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Source Port

10. What determines the method of media access control?
UDP
A. media sharing b. logical topology
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
To enable a receiving host to forward the data to the appropriate application.

11. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
255.255.255.0
80 (HTTP)
A. larger address space b. data types and classes of service c. authentication and encryption
A. next-hop b. metric/interface c. destination network address

12. Important characteristic of UDP
Binary ANDing
Minimal delays in data delivery.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. decentralized resources b. resource sharing w/o a dedicated server

13. What causes crosstalk within cable pairs when using UTP?
A. hot keys b. context-sensitive c. command syntax check
Network address
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The magnetic field around the adjacent pairs of wire.

14. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Console
Signal loss can be experienced.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Binary ANDing

15. 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. HTTP b. HTTPS
A. physical layer b. DLL layer
Network address
A. the router will discard the packet b. the router will send a time exceeded message to the source host

16. What type of routing uses information that is manually entered into the routing table?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. goodput b. throughput c. bandwidth
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Static

17. What is an effect of improperly applying a network cable connector?
Network Layer
Signal loss can be experienced.
It uses support from the lower layers to distinguish between connections to the service.
Source and Destination Ports

18. Network Protocols
Application Layer
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Static
The packets will be delivered and reassembled at destination.

19. 2 functions of encapsulation
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
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
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

20. 2 characteristics of peer-2-peer
Is used by the server to resolve names.
Console interface
A. decentralized resources b. resource sharing w/o a dedicated server
A. hot keys b. context-sensitive c. command syntax check

21. What is a disadvantage of Telnet?
It does not support encryption.
80 (HTTP)
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. application b. services

22. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Time-to-live (TTL)
Network address
A. Physical b. Data Link
80 (HTTP)

23. What is a protocol that provides connectionless network layer services?
Destination Network Address
Show Interfaces
IP Protocol
Network address

24. What method of signal transmission uses radio waves to carry signals?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
32 bits
Wireless
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

25. statements of IP adressing
Hosts return to listen-before-transmit mode.
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
Next-Hop Address
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

26. What is the primary rope of the physical layer in transmitting data?
Next-Hop Address
A. Physical b. Data Link
Create signals that represent the bits in each frame for the media.
IP is not properly installed

27. Intermediary devices used to implement security between networks
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Source Port
A. router b. firewall
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

28. What do the intermediary devices in the network do?
A. decentralized resources b. resource sharing w/o a dedicated server
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Is a layer of specific encapsulation.
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

29. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
80 (HTTP)
FTP

30. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
Binary ANDing
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 random delay helps prevent the stations from experiencing another collision during transmission.

31. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A backbone cable.
Network Layer Packet
UTP
A random delay helps prevent the stations from experiencing another collision during transmission.

32. What is the primary purpose of ARP?
The address of the router that the host will use to 'get to the other side'.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Identify processes or services that are communicating with end devices.
Resolve IPv4 addresses to MAC addresses.

33. What event occurs during the 3-way handshake?
RJ-45
255.255.255.0
A. flow control b. session establishment c. numbering and sequencing
TCP initializes the sequence numbers for the sessions.

34. 3 statements about routes and their use
32 bits
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
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
Collisions can decrease network performance.

35. 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.
Signal loss can be experienced.
Rollover cable
The MAC protocol can be very simple.

36. 3 terms that define the forms of help available within the Cisco IOS
Identify processes or services that are communicating with end devices.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. hot keys b. context-sensitive c. command syntax check
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

37. 3 statements about the role of routers in the network
Router
A. servers b. routers c. network printers
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. flow control b. session establishment c. numbering and sequencing

38. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
Network Layer
Network portion
A. hot keys b. context-sensitive c. command syntax check

39. What is a characteristic of a logical point-to-point topology?
Show Interfaces
A. larger address space b. data types and classes of service c. authentication and encryption
The MAC protocol can be very simple.
172.16.192.160

40. What makes fiber preferable to copper for interconnecting buildings?
A. it has centralized administration b. security is easier to enforce
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Network address
Source and Destination Ports

41. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Supports error detection.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Signal loss can be experienced.

42. What are 2 email components used to forward mail between servers?
A default gateway (router).
A. MTA b. SMTP
The packets will be delivered and reassembled at destination.
Destination is not contacted before a packet is sent.

43. What info is found in the TCP and UDP header info?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Source and Destination Ports
RJ-45
UDP

44. In business LANs - which connector is used w/ twisted-pair networking cable?
RJ-45
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. purpose b. geographic location c. ownership
2046

45. What is PDU?
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
Console interface
Is a layer of specific encapsulation.
A. application b. services

46. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
The MAC protocol can be very simple.
255.255.255.0
UDP

47. 2 features that make switches preferable to hubs
Router(config)# interface FastEthernet 0/1
A. minimizing of collisions b. division into broadcast domains
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Static

48. What are 3 common problems w/ large networks?
32 bits
A. MTA b. SMTP
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. perform degradation b. security issues c. host identification

49. 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?
8
It uses lasers as the light source.
A. they initiate data exchanges b. they may upload data to servers
Network Layer

50. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Network portion
Minimal delays in data delivery.
Create signals that represent the bits in each frame for the media.