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. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A. decentralized resources b. resource sharing w/o a dedicated server
The packets will be delivered and reassembled at destination.
A. low overhead b. connectionless

2. Statements that describe LAN
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Flash
As the commands are entered.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

3. What info is found in the TCP and UDP header info?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Destination is not contacted before a packet is sent.
Source and Destination Ports
Transport

4. What is an automated service that matches resource names w/ required IP addresses?
It reduces unnecessary broadcasts.
DNS
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. DB 60 b. Winchester 15-pin c. smart serial

5. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
Network Layer Packet
Static
A. physical layer b. DLL layer

6. 3 factors that should be considered when implementing Layer 2 protocols
A. flow control b. session establishment c. numbering and sequencing
SMB
The destination host address.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

7. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
SSH
To prevent the receiver from being overwhelmed by incoming data.
Binary ANDing
It uses lasers as the light source.

8. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Console interface
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
SMB

9. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
Is used by the server to resolve names.
Network Access
255.255.255.0

10. Why are port numbers included in the TCP header of a segment?
Binary ANDing
UDP
Is used by the server to resolve names.
To enable a receiving host to forward the data to the appropriate application.

11. After an ethernet collision - which device has priority to transmit data?
Any device whose backoff timer expires first.
Ctrl + Shift + 6
RJ-45
Originate data flow.

12. If you have a small network w/ 3 computers...
When connecting a host to a switch.
Binary ANDing
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
UDP

13. 3 functions of the upper data link sublayer in the OSI model
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. DNS b. SMTP c. POP
A. minimizing of collisions b. division into broadcast domains
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

14. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
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
A. they initiate data exchanges b. they may upload data to servers
A. media sharing b. logical topology
0 to 1023

15. What is a protocol that provides connectionless network layer services?
They must wait until the first hosts finish transfering the media.
IP Protocol
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. decentralized resources b. resource sharing w/o a dedicated server

16. What is a drawback of the CSMA/CD access method?
2046
Console interface
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.

17. When is a straight-through cable used in a network?
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
Network Media Control
A. enable mode b. priviledge executive mode
When connecting a host to a switch.

18. What do the intermediary devices in the network do?
32 bits
SSH
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Is used by the server to resolve names.

19. What causes crosstalk within cable pairs when using UTP?
No collisions will occur on this link.
The magnetic field around the adjacent pairs of wire.
A. purpose b. geographic location c. ownership
A. Physical b. Data Link

20. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. replace a switch w/ a router b. subnet the new networks
Transport
The address of the router that the host will use to 'get to the other side'.

21. What determines the method of media access control?
A. application b. services
It reduces unnecessary broadcasts.
A. media sharing b. logical topology
Console

22. Which combination of keys can be used to interrupt a ping or traceroute process?
Signal loss can be experienced.
172.16.192.160
Ctrl + Shift + 6
A. addressing b. error detection c. frame delimiting

23. 2 features that make switches preferable to hubs
Destination is not contacted before a packet is sent.
Hosts return to listen-before-transmit mode.
A. performance degradation b. security issues c. host identification
A. minimizing of collisions b. division into broadcast domains

24. 3 features that allow TCP to realibly and accurately track the transmission of data
RJ-45
A. flow control b. session establishment c. numbering and sequencing
SMB
A. HTTP b. HTTPS

25. What is the role of MTA in handling email?
Originate data flow.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Host mobility
80 (HTTP)

26. What is a disadvantage of Telnet?
OTDR
SSH
It does not support encryption.
Wireless

27. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Hosts return to listen-before-transmit mode.
Originate data flow.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

28. If you have a full-duplex operational network - what can happen?
DNS
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
No collisions will occur on this link.
IP Protocol

29. What is dinamically selected by the source host when forwarding data?
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
UTP
Rollover cable
Source Port

30. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
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
Physical
A. router b. firewall
Network portion

31. When a network service fails - which port is most often used to access a router for management purposes?
A. servers b. routers c. network printers
Source Port
Console
A random delay helps prevent the stations from experiencing another collision during transmission.

32. What is the proper order of the OSI Layers?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. netstat -r b. route PRINT
Time-to-live (TTL)

33. When destination network is not in the routing table - What are 2 actions the router might take?
When connecting a host to a switch.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Resolve IPv4 addresses to MAC addresses.
Network

34. statements of IP adressing
Destination is not contacted before a packet is sent.
A. application b. services
Show Interfaces
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

35. 2 most commonly used media types in ethernet networks
A. MTA b. SMTP
A physical topology.
A. copper UTP b. optical fiber
The magnetic field around the adjacent pairs of wire.

36. Which IP packet field will prevent endless loops?
Network portion
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
Time-to-live (TTL)
255.255.255.0

37. What is the purpose of the preamble in an ethernet frame?
Next-Hop Address
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
0 to 1023
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

38. What can get you to an outside network?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Router
A default gateway (router).
Console

39. What command can be used to determine if the router has experienced any input or output errors?
UDP
Destination Network Address
Hosts return to listen-before-transmit mode.
Show Interfaces

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?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
They must wait until the first hosts finish transfering the media.
As the commands are entered.
A. decentralized resources b. resource sharing w/o a dedicated server

41. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. performance degradation b. security issues c. host identification
A. next-hop b. metric/interface c. destination network address
Fiber
UDP

42. What are 2 email components used to forward mail between servers?
Resolve IPv4 addresses to MAC addresses.
8
A. MTA b. SMTP
The MAC protocol can be very simple.

43. 3 measures of data transfer
RJ-45
A. goodput b. throughput c. bandwidth
A. minimizing of collisions b. division into broadcast domains
Host A

44. What are the advantages of using a client-server model?
Destination is not contacted before a packet is sent.
The address of the router that the host will use to 'get to the other side'.
A. it has centralized administration b. security is easier to enforce
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

45. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
80 (HTTP)
Router(config)# interface FastEthernet 0/1
Network Layer Packet
A. Physical b. Data Link

46. 3 primary functions of the data link layer encapsulation
IP Protocol
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Twisting of the cables
A. addressing b. error detection c. frame delimiting

47. What information is added during encapsulation at OSI Layer 3?
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
Source and Destination IP address
A. minimizing of collisions b. division into broadcast domains
A. they initiate data exchanges b. they may upload data to servers

48. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Resolve IPv4 addresses to MAC addresses.
Is a layer of specific encapsulation.

49. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A default gateway (router).
Rollover cable
It has expanded adressing capabilities.

50. What event occurs during the 3-way handshake?
255.255.255.0
TCP initializes the sequence numbers for the sessions.
Logical Link Control sublayer
A physical topology.