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 you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. flow control b. session establishment c. numbering and sequencing
Next-Hop Address
Network Layer Packet

2. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The packets will be delivered and reassembled at destination.
RJ-45

3. What device can check for faults - integrity and performance of media?
OTDR
80 (HTTP)
It uses support from the lower layers to distinguish between connections to the service.
Router

4. What determines the method of media access control?
A. media sharing b. logical topology
A. low overhead b. connectionless
A random delay helps prevent the stations from experiencing another collision during transmission.
A. enable mode b. priviledge executive mode

5. 3 statements of media acess control
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
Switch
32 bits
Twisting of the cables

6. What is dinamically selected by the source host when forwarding data?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The destination host address.
Network address
Source Port

7. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
A. it has centralized administration b. security is easier to enforce
SSH
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

8. In business LANs - which connector is used w/ twisted-pair networking cable?
A. physical layer b. DLL layer
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
It provides interface between applications on either end of the network.
RJ-45

9. What is the proper order of the OSI Layers?
Supports error detection.
Application Layer
A. Physical b. Data Link
A. application b. presentation c. session d. transmision e. network f. data link g. physical

10. What is a default gateway address?

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11. Which characteristics describe fiber optic cable?
When connecting a host to a switch.
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. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. not affected by EMI of RFI b. most expensive type of LAN cabling

12. Important characteristic of UDP
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Rollover cable
Minimal delays in data delivery.

13. How does the application layer on a server process multiple client requests for services?
Hub
SSH
When connecting a host to a switch.
It uses support from the lower layers to distinguish between connections to the service.

14. 3 terms that define the forms of help available within the Cisco IOS
255.255.255.224
A. hot keys b. context-sensitive c. command syntax check
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Switch

15. 3 measures of data transfer
A. decentralized resources b. resource sharing w/o a dedicated server
A. media sharing b. logical topology
A. replace a switch w/ a router b. subnet the new networks
A. goodput b. throughput c. bandwidth

16. What command is used to change the default name to 'Costas'?
A. netstat -r b. route PRINT
Router(config)# hostname Costas
Twisting of the cables
A. the router will discard the packet b. the router will send a time exceeded message to the source host

17. Intermediary devices used to implement security between networks
A. router b. firewall
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
80 (HTTP)
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

18. What 2 type of cables would most commonly be used for new runs?
TCP initializes the sequence numbers for the sessions.
The MAC protocol can be very simple.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. Cat5 UTP b. Cat6 UTP

19. 3 factors that should be considered when implementing Layer 2 protocols
32 bits
FTP
A. copper UTP b. optical fiber
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

20. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
A. low overhead b. connectionless
Network address
A. HTTP b. HTTPS
It does not support encryption.

21. statements of IP adressing
DNS
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. not affected by EMI of RFI b. most expensive type of LAN cabling
Fiber

22. What do end devices do?
Originate data flow.
0 to 1023
Host mobility
A. show startup-config b. show running-config

23. 2 functions of encapsulation
To facilitate the entry and exit of data on media.
Binary ANDing
0 to 1023
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

24. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. DB 60 b. Winchester 15-pin c. smart serial
The magnetic field around the adjacent pairs of wire.
RJ-45

25. What is the function of the DLL?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
It provides for the exchange of data over a common local media.

26. 3 features of IPv6
TCP initializes the sequence numbers for the sessions.
Any device whose backoff timer expires first.
A. larger address space b. data types and classes of service c. authentication and encryption
OTDR

27. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Hub
A. flow control b. session establishment c. numbering and sequencing

28. What makes fiber preferable to copper for interconnecting buildings?
255.255.255.0
Static
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Physical

29. If there is a graphic representation of a company network wiring and equipment - What is this called?
172.16.192.160
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 physical topology.
Logical Link Control sublayer

30. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
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
MAC
The address of the router that the host will use to 'get to the other side'.
Application Layer

31. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A. larger address space b. data types and classes of service c. authentication and encryption
Hosts return to listen-before-transmit mode.
172.16.192.160

32. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
80 (HTTP)
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
MAC

33. What is an automated service that matches resource names w/ required IP addresses?
Any device whose backoff timer expires first.
Switch
TCP initializes the sequence numbers for the sessions.
DNS

34. What is a benefit of a WAN?
The physical address is added.
Host mobility
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Network Media Control

35. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Supports error detection.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Destination Network Address
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

36. 3 protocols that operate in the application layer
A. addressing b. error detection c. frame delimiting
A. purpose b. geographic location c. ownership
A. DNS b. SMTP c. POP
Network

37. At which layer of the TCP/IP model does ethernet operate?
Network Access
As the commands are entered.
A. replace a switch w/ a router b. subnet the new networks
Source and Destination Ports

38. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
Console
The address of the router that the host will use to 'get to the other side'.
0 to 1023

39. What are 2 features of User Diagram Protocol (UDP)?
IP Protocol
Source and Destination Ports
A. router b. firewall
A. low overhead b. connectionless

40. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
Minimal delays in data delivery.
Application Layer
They must wait until the first hosts finish transfering the media.
It uses lasers as the light source.

41. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Source Port
Binary ANDing
Source and Destination IP address

42. 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. router b. firewall
A. they initiate data exchanges b. they may upload data to servers
8
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

43. If you have a full-duplex operational network - what can happen?
Router(config)# interface FastEthernet 0/1
No collisions will occur on this link.
It uses lasers as the light source.
Window Size

44. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
255.255.255.0
Window Size
A. DNS b. SMTP c. POP

45. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
A. performance degradation b. security issues c. host identification
UDP
A. minimizing of collisions b. division into broadcast domains

46. What layer encapsulates segments into packets?
Static
Network Layer Packet
Network Layer
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

47. During encapsulation - what happens in the Data Link Layer?
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
Hub
A backbone cable.
The physical address is added.

48. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
Minimal delays in data delivery.
172.16.192.160
The MAC protocol can be very simple.

49. 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. perform degradation b. security issues c. host identification
80 (HTTP)
A. minimizing of collisions b. division into broadcast domains
Network Layer Packet

50. What type of routing uses information that is manually entered into the routing table?
Binary ANDing
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Static
A. low overhead b. connectionless