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. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
Supports error detection.
Network Layer
Source and Destination Ports

2. What makes fiber preferable to copper for interconnecting buildings?
Create signals that represent the bits in each frame for the media.
A. DB 60 b. Winchester 15-pin c. smart serial
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. low overhead b. connectionless

3. What statements describe the logical token-passing topology?
Network Access
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
The MAC protocol can be very simple.
To prevent the receiver from being overwhelmed by incoming data.

4. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network
Physical
A. DB 60 b. Winchester 15-pin c. smart serial

5. Why is flow control used for TCP data transfer?
The magnetic field around the adjacent pairs of wire.
Fiber
Source and Destination IP address
To prevent the receiver from being overwhelmed by incoming data.

6. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
It does not support encryption.
Router(config)# interface FastEthernet 0/1
A. physical layer b. DLL layer
Signal loss can be experienced.

7. 3 facts about the network portion of an IPv4 address
Binary ANDing
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Show Interfaces
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

8. What describes the purpose of default route?
Any device whose backoff timer expires first.
SMB
A. larger address space b. data types and classes of service c. authentication and encryption
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

9. 3 functions of the upper data link sublayer in the OSI model
It provides interface between applications on either end of the network.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
It has expanded adressing capabilities.

10. What is an automated service that matches resource names w/ required IP addresses?
Source and Destination Ports
Is used by the server to resolve names.
DNS
Destination is not contacted before a packet is sent.

11. What do end devices do?
Originate data flow.
Source Port
A random delay helps prevent the stations from experiencing another collision during transmission.
A. flow control b. session establishment c. numbering and sequencing

12. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Router
It does not support encryption.
Host mobility
A random delay helps prevent the stations from experiencing another collision during transmission.

13. What determines the method of media access control?
255.255.255.0
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. DNS b. SMTP c. POP
A. media sharing b. logical topology

14. 3 properties of peer-2-peer applications
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
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 physical topology.
Network Layer Packet

15. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
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
Destination is not contacted before a packet is sent.
0 to 1023
A. larger address space b. data types and classes of service c. authentication and encryption

16. 2 features that make switches preferable to hubs
A. servers b. routers c. network printers
A. minimizing of collisions b. division into broadcast domains
Show Interfaces
A. HTTP b. HTTPS

17. What is a default gateway address?

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18. In a connectionless system - What is correct?
Show Interfaces
A. Physical b. Data Link
Destination is not contacted before a packet is sent.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

19. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. larger address space b. data types and classes of service c. authentication and encryption
A. not affected by EMI of RFI b. most expensive type of LAN cabling
SMB
A. low overhead b. connectionless

20. What application layer protocol is used to support file transfers between client and server?
A. HTTP b. HTTPS
A. netstat -r b. route PRINT
FTP
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

21. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. performance degradation b. security issues c. host identification
A. decentralized resources b. resource sharing w/o a dedicated server
A. Physical b. Data Link
The physical address is added.

22. Where is the IOS file stored at?
A. MTA b. SMTP
A. router b. firewall
A default gateway (router).
Flash

23. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
A. servers b. routers c. network printers
Logical Link Control sublayer
Router

24. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. decentralized resources b. resource sharing w/o a dedicated server
Static
Source and Destination IP address

25. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
A. it has centralized administration b. security is easier to enforce
Physical
It reduces unnecessary broadcasts.

26. Which device is used to create or divide broadcast domains?
Application Layer
Router
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. addressing b. error detection c. frame delimiting

27. 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?
Router(config)# hostname Costas
A. DB 60 b. Winchester 15-pin c. smart serial
A. minimizing of collisions b. division into broadcast domains
Host A

28. What causes crosstalk within cable pairs when using UTP?
The magnetic field around the adjacent pairs of wire.
A. DB 60 b. Winchester 15-pin c. smart serial
Show Interfaces
Static

29. In business LANs - which connector is used w/ twisted-pair networking cable?
A. HTTP b. HTTPS
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. larger address space b. data types and classes of service c. authentication and encryption

30. After an ethernet collision - which device has priority to transmit data?
Create signals that represent the bits in each frame for the media.
Flash
Any device whose backoff timer expires first.
Wireless

31. What is a drawback of the CSMA/CD access method?
80 (HTTP)
Rollover cable
Collisions can decrease network performance.
172.16.192.160

32. When destination network is not in the routing table - What are 2 actions the router might take?
Time-to-live (TTL)
They must wait until the first hosts finish transfering the media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. non-deterministic b. less overhead c. collisions exist

33. What are 2 forms of application layer software?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
TCP initializes the sequence numbers for the sessions.
255.255.255.224
A. application b. services

34. 2 most commonly used media types in ethernet networks
The magnetic field around the adjacent pairs of wire.
Destination is not contacted before a packet is sent.
A. goodput b. throughput c. bandwidth
A. copper UTP b. optical fiber

35. What are 2 features of User Diagram Protocol (UDP)?
A. physical layer b. DLL layer
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
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. low overhead b. connectionless

36. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
The physical address is added.
The MAC protocol can be very simple.
A. low overhead b. connectionless
UTP

37. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
Hosts return to listen-before-transmit mode.
IP is not properly installed
Originate data flow.

38. What is a benefit of a WAN?
Source and Destination IP address
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Host mobility

39. 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. decentralized resources b. resource sharing w/o a dedicated server
Network Access
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

40. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
255.255.255.224
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A random delay helps prevent the stations from experiencing another collision during transmission.

41. 2 functions of encapsulation
Host mobility
It provides for the exchange of data over a common local media.
Destination is not contacted before a packet is sent.
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

42. What event occurs during the 3-way handshake?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
TCP initializes the sequence numbers for the sessions.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. replace a switch w/ a router b. subnet the new networks

43. 2 characteristics of clients in data networks
A. they initiate data exchanges b. they may upload data to servers
0 to 1023
A. HTTP b. HTTPS
They must wait until the first hosts finish transfering the media.

44. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A. goodput b. throughput c. bandwidth
Originate data flow.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

45. What device can check for faults - integrity and performance of media?
Host A
OTDR
A. HTTP b. HTTPS
A. perform degradation b. security issues c. host identification

46. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
Collisions can decrease network performance.
Transport
A. Cat5 UTP b. Cat6 UTP

47. What is PDU?
Originate data flow.
UTP
Is a layer of specific encapsulation.
2046

48. 3 features of IPv6
No collisions will occur on this link.
Wireless
A. larger address space b. data types and classes of service c. authentication and encryption
Source and Destination IP address

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Rollover cable
A. servers b. routers c. network printers
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
Binary ANDing

50. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
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
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. HTTP b. HTTPS