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. Why is flow control used for TCP data transfer?
Signal loss can be experienced.
It uses lasers as the light source.
To prevent the receiver from being overwhelmed by incoming data.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

2. 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. larger address space b. data types and classes of service c. authentication and encryption
Wireless
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. show startup-config b. show running-config

3. 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?
Host A
They must wait until the first hosts finish transfering the 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. 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

4. 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.
Binary ANDing
Is used by the server to resolve names.
Router

5. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
8
Destination Network Address
255.255.255.0
Window Size

6. What are 2 forms of application layer software?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
To enable a receiving host to forward the data to the appropriate application.
Hub
A. application b. services

7. What are 3 common problems w/ large networks?
It provides for the exchange of data over a common local media.
2046
A. perform degradation b. security issues c. host identification
It has expanded adressing capabilities.

8. What is a characteristic of a single-mode fiber-optic cable?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
It uses lasers as the light source.
Next-Hop Address

9. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
A. physical layer b. DLL layer
Ctrl + Shift + 6
IP Protocol

10. What is the primary rope of the physical layer in transmitting data?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Create signals that represent the bits in each frame for the media.
172.16.192.160
Console interface

11. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. show startup-config b. show running-config
Rollover cable
A. DB 60 b. Winchester 15-pin c. smart serial

12. What determines the method of media access control?
A. enable mode b. priviledge executive mode
A. media sharing b. logical topology
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. low overhead b. connectionless

13. There are too many broadcasts on switches - what can be done?
A. minimizing of collisions b. division into broadcast domains
A. physical layer b. DLL layer
A. replace a switch w/ a router b. subnet the new networks
Minimal delays in data delivery.

14. 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
A. they initiate data exchanges b. they may upload data to servers
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Window Size

15. Which portion of the network layer address does a router use to forward packets?
Time-to-live (TTL)
Network portion
DNS
A. netstat -r b. route PRINT

16. What information is added during encapsulation at OSI Layer 3?
Source and Destination Ports
Source and Destination IP address
A. minimizing of collisions b. division into broadcast domains
0 to 1023

17. Which IP packet field will prevent endless loops?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Binary ANDing
Time-to-live (TTL)
It uses lasers as the light source.

18. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
80 (HTTP)
A default gateway (router).
Network portion
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

19. What can get you to an outside network?
A. non-deterministic b. less overhead c. collisions exist
A. Physical b. Data Link
A default gateway (router).
The MAC protocol can be very simple.

20. What is dinamically selected by the source host when forwarding data?
OTDR
0 to 1023
A. router b. firewall
Source Port

21. An admin needs to keep contents private - which access method should he use?
Is used by the server to resolve names.
SSH
Binary ANDing
A. addressing b. error detection c. frame delimiting

22. 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
A. hot keys b. context-sensitive c. command syntax check
Window Size
A. flow control b. session establishment c. numbering and sequencing

23. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
8
A. they initiate data exchanges b. they may upload data to servers
It uses lasers as the light source.

24. What is the purpose of the TCP/IP Network Application Layer?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Network Media Control
UDP
A. the router will discard the packet b. the router will send a time exceeded message to the source host

25. What do you need to use for an initial configuration on a Cisco router?
Console interface
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
80 (HTTP)
Host A

26. What is a default gateway address?

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

27. What is the purpose of the preamble in an ethernet frame?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network Access

28. 3 primary functions of the data link layer encapsulation
A. addressing b. error detection c. frame delimiting
A backbone cable.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Destination Network Address

29. What do end devices do?
Originate data flow.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
UDP
As the commands are entered.

30. What is the function of the DLL?
A default gateway (router).
Console
255.255.255.224
It provides for the exchange of data over a common local media.

31. Which device is used to create or divide broadcast domains?
Router
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. performance degradation b. security issues c. host identification
When connecting a host to a switch.

32. 3 terms that define the forms of help available within the Cisco IOS
Hosts return to listen-before-transmit mode.
To facilitate the entry and exit of data on media.
A. hot keys b. context-sensitive c. command syntax check
Signal loss can be experienced.

33. What layer encapsulates segments into packets?
UDP
Network Layer
Router(config)# hostname Costas
Network portion

34. What is the primary purpose of Layer 4?
Identify processes or services that are communicating with end devices.
A. application b. services
Fiber
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

35. Which 2 options represent Layer 4 addressing?
Rollover cable
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
32 bits
A. identifies the communicating applications b. identifies multiple conversations between the hosts

36. After an ethernet collision - which device has priority to transmit data?
A. they initiate data exchanges b. they may upload data to servers
Time-to-live (TTL)
Any device whose backoff timer expires first.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

37. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
2046
Show Interfaces
A. media sharing b. logical topology
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

38. What is the role of MTA in handling email?
A default gateway (router).
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. copper UTP b. optical fiber
Collisions can decrease network performance.

39. What correctly describes a MAC address?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
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
A. HTTP b. HTTPS
The address of the router that the host will use to 'get to the other side'.

40. 3 protocols that operate in the application layer
A. router b. firewall
32 bits
A. DNS b. SMTP c. POP
172.16.192.160

41. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
It has expanded adressing capabilities.
A random delay helps prevent the stations from experiencing another collision during transmission.
DNS

42. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Identify processes or services that are communicating with end devices.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Transport
It has expanded adressing capabilities.

43. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Source Port
Any device whose backoff timer expires first.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Router(config)# interface FastEthernet 0/1

44. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Supports error detection.
Hosts return to listen-before-transmit mode.
Transport
A. router b. firewall

45. What method of signal transmission uses radio waves to carry signals?
Wireless
To enable a receiving host to forward the data to the appropriate application.
Static
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

46. What type of network cable is used between a terminal and a console port?
Rollover cable
A random delay helps prevent the stations from experiencing another collision during transmission.
It provides for the exchange of data over a common local media.
It does not support encryption.

47. 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
When connecting a host to a switch.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Router

48. What characteristic of an UTP helps reduce interference?
Flash
A. show startup-config b. show running-config
Twisting of the cables
8

49. What are 3 pieces of info about a route contained in a routing table?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. next-hop b. metric/interface c. destination network address
32 bits
A. replace a switch w/ a router b. subnet the new networks

50. 3 properties of peer-2-peer applications
172.16.192.160
Console interface
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
8