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. After an ethernet collision - which device has priority to transmit data?
Create signals that represent the bits in each frame for the media.
A. decentralized resources b. resource sharing w/o a dedicated server
A. it has centralized administration b. security is easier to enforce
Any device whose backoff timer expires first.

2. What is the primary purpose of Layer 4?
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
Signal loss can be experienced.
Identify processes or services that are communicating with end devices.
Wireless

3. 3 primary functions of the data link layer encapsulation
As the commands are entered.
Ctrl + Shift + 6
A. addressing b. error detection c. frame delimiting
Rollover cable

4. What is the purpose of the TCP/IP Network Application Layer?
Network Layer
Flash
Network Media Control
A. performance degradation b. security issues c. host identification

5. What can be a problem that is reduced by adding end-to-end addressing?
Network Access
It reduces unnecessary broadcasts.
A. DB 60 b. Winchester 15-pin c. smart serial
Network portion

6. What 2 type of cables would most commonly be used for new runs?
Create signals that represent the bits in each frame for the media.
A. non-deterministic b. less overhead c. collisions exist
A. Cat5 UTP b. Cat6 UTP
Logical Link Control sublayer

7. What is the role of MTA in handling email?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The packets will be delivered and reassembled at destination.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Network Media Control

8. How does the application layer on a server process multiple client requests for services?
Transport
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. Cat5 UTP b. Cat6 UTP
It uses support from the lower layers to distinguish between connections to the service.

9. What is dinamically selected by the source host when forwarding data?
To enable a receiving host to forward the data to the appropriate application.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Source Port
Console

10. 2 functions of encapsulation
No collisions will occur on this link.
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
Window Size
Create signals that represent the bits in each frame for the media.

11. Which portion of the network layer address does a router use to forward packets?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Network portion
A. decentralized resources b. resource sharing w/o a dedicated server
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

12. What event occurs during the 3-way handshake?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Window Size
TCP initializes the sequence numbers for the sessions.
Collisions can decrease network performance.

13. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
SSH
32 bits

14. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Rollover cable
Router(config)# interface FastEthernet 0/1
A. router b. firewall
Collisions can decrease network performance.

15. Which layer supplies services and allows user interface?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. DNS b. SMTP c. POP
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
Application Layer

16. What is the primary function of encapsulating packets into frames?
A physical topology.
To facilitate the entry and exit of data on media.
Wireless
Router(config)# interface FastEthernet 0/1

17. 2 features that make switches preferable to hubs
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Wireless
A. minimizing of collisions b. division into broadcast domains
A. copper UTP b. optical fiber

18. Group of hosts that have identical bit patterns in the high order bits of their addresses
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
As the commands are entered.
Network

19. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Originate data flow.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. Cat5 UTP b. Cat6 UTP

20. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
A random delay helps prevent the stations from experiencing another collision during transmission.
Physical
A. goodput b. throughput c. bandwidth
Binary ANDing

21. What is the function of the DLL?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
It provides for the exchange of data over a common local media.
Switch
2046

22. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
80 (HTTP)
Hosts return to listen-before-transmit mode.
Source and Destination IP address
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

23. 3 statements of media acess control
A physical topology.
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
Router(config)# interface FastEthernet 0/1
A. perform degradation b. security issues c. host identification

24. What are 2 commands used to view a host routing table?
Destination Network Address
Show Interfaces
It provides interface between applications on either end of the network.
A. netstat -r b. route PRINT

25. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Supports error detection.
255.255.255.224
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
DNS

26. What are 2 common characteristics associated w/ dynamic routing protocols?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A random delay helps prevent the stations from experiencing another collision during transmission.
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

27. 2 characteristics of peer-2-peer
Time-to-live (TTL)
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. decentralized resources b. resource sharing w/o a dedicated server
2046

28. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
FTP
0 to 1023
Ctrl + Shift + 6
Source Port

29. 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?
Twisting of the cables
Source and Destination Ports
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. show startup-config b. show running-config

30. To make a console connection from a comp to a Cisco router - what cable should be used?
Rollover cable
Source and Destination Ports
The physical address is added.
A. enable mode b. priviledge executive mode

31. What are 2 email components used to forward mail between servers?
Network
A. MTA b. SMTP
It uses support from the lower layers to distinguish between connections to the service.
RJ-45

32. When do changes take effect in a Cisco router?
A default gateway (router).
A random delay helps prevent the stations from experiencing another collision during transmission.
A. DNS b. SMTP c. POP
As the commands are entered.

33. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Router(config)# hostname Costas
Router(config)# interface FastEthernet 0/1
Switch
Signal loss can be experienced.

34. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
A. decentralized resources b. resource sharing w/o a dedicated server
A. non-deterministic b. less overhead c. collisions exist
Wireless
80 (HTTP)

35. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
The magnetic field around the adjacent pairs of wire.

36. What are the advantages of using a client-server model?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
To prevent the receiver from being overwhelmed by incoming data.
It uses lasers as the light source.
A. it has centralized administration b. security is easier to enforce

37. Which 2 options represent Layer 4 addressing?
A. Physical b. Data Link
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Window Size
A. identifies the communicating applications b. identifies multiple conversations between the hosts

38. In business LANs - which connector is used w/ twisted-pair networking cable?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
RJ-45
It provides for the exchange of data over a common local media.
Network portion

39. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
The address of the router that the host will use to 'get to the other side'.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. next-hop b. metric/interface c. destination network address

40. 3 terms that define the forms of help available within the Cisco IOS
A. replace a switch w/ a router b. subnet the new networks
A. hot keys b. context-sensitive c. command syntax check
255.255.255.224
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

41. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
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.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

42. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
255.255.255.0
Transport
When connecting a host to a switch.

43. What is the role of the OSI Application Layer?
Wireless
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
When connecting a host to a switch.
It provides interface between applications on either end of the network.

44. What are 3 properties of contention-based media access for a shared media?
MAC
Identify processes or services that are communicating with end devices.
A. non-deterministic b. less overhead c. collisions exist
A. larger address space b. data types and classes of service c. authentication and encryption

45. 3 functions of the upper data link sublayer in the OSI model
DNS
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
The packets will be delivered and reassembled at destination.
A. low overhead b. connectionless

46. What are 2 features of User Diagram Protocol (UDP)?
It reduces unnecessary broadcasts.
When connecting a host to a switch.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. low overhead b. connectionless

47. Important characteristic of UDP
Network
A. show startup-config b. show running-config
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Minimal delays in data delivery.

48. What type of network cable is used between a terminal and a console port?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Rollover cable
Host A
They must wait until the first hosts finish transfering the media.

49. What device can check for faults - integrity and performance of media?
It provides interface between applications on either end of the network.
Router
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
OTDR

50. Which device is used to create or divide broadcast domains?
Router
Console
TCP initializes the sequence numbers for the sessions.
IP is not properly installed