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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 is the primary rope of the physical layer in transmitting data?
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
Create signals that represent the bits in each frame for the media.
The destination host address.
0 to 1023

2. What can get you to an outside network?
A default gateway (router).
A. router b. firewall
Source and Destination IP address
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

3. When is a straight-through cable used in a network?
It provides interface between applications on either end of the network.
Physical
As the commands are entered.
When connecting a host to a switch.

4. 2 most commonly used media types in ethernet networks
A. replace a switch w/ a router b. subnet the new networks
Window Size
A. copper UTP b. optical fiber
A. Cat5 UTP b. Cat6 UTP

5. 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?
Logical Link Control sublayer
They must wait until the first hosts finish transfering the media.
IP is not properly installed
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

6. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. low overhead b. connectionless
A. purpose b. geographic location c. ownership
A. DB 60 b. Winchester 15-pin c. smart serial
A. application b. services

7. 3 measures of data transfer
Destination is not contacted before a packet is sent.
A. goodput b. throughput c. bandwidth
Source and Destination Ports
Transport

8. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Source and Destination Ports
It provides interface between applications on either end of the network.
A. flow control b. session establishment c. numbering and sequencing
A. enable mode b. priviledge executive mode

9. What is the role of the OSI Application Layer?
A. it has centralized administration b. security is easier to enforce
Identify processes or services that are communicating with end devices.
It provides interface between applications on either end of the network.
Network Media Control

10. 3 facts about the network portion of an IPv4 address
Switch
It provides for the exchange of data over a common local media.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Physical

11. What statements describe the logical token-passing topology?
Is used by the server to resolve names.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. router b. firewall
A random delay helps prevent the stations from experiencing another collision during transmission.

12. What are the advantages of using a client-server model?
A. it has centralized administration b. security is easier to enforce
It does not support encryption.
Network Layer Packet
A. minimizing of collisions b. division into broadcast domains

13. To make a console connection from a comp to a Cisco router - what cable should be used?
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
Rollover cable
Resolve IPv4 addresses to MAC addresses.
It provides interface between applications on either end of the network.

14. What are 3 common problems w/ large networks?
A. perform degradation b. security issues c. host identification
The MAC protocol can be very simple.
A. show startup-config b. show running-config
Binary ANDing

15. 3 properties of peer-2-peer applications
A. minimizing of collisions b. division into broadcast domains
A. not affected by EMI of RFI b. most expensive type of LAN cabling
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
Identify processes or services that are communicating with end devices.

16. 3 protocols that operate in the application layer
Source and Destination IP address
Network address
A. DNS b. SMTP c. POP
MAC

17. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
8
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
UTP
A. the router will discard the packet b. the router will send a time exceeded message to the source host

18. What command is used to change the default name to 'Costas'?
Signal loss can be experienced.
Router(config)# hostname Costas
Collisions can decrease network performance.
A. low overhead b. connectionless

19. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. DB 60 b. Winchester 15-pin c. smart serial
Network portion
A. Cat5 UTP b. Cat6 UTP
255.255.255.0

20. What is the purpose of a default gateway?
It does not support encryption.
Identify the device that allows local network computers to communicate w/ devices in other networks.
The physical address is added.
Rollover cable

21. What is the purpose of the preamble in an ethernet frame?
A. they initiate data exchanges b. they may upload data to servers
UDP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Originate data flow.

22. What info is found in the TCP and UDP header info?
A. they initiate data exchanges b. they may upload data to servers
IP is not properly installed
Network Access
Source and Destination Ports

23. What is an automated service that matches resource names w/ required IP addresses?
DNS
A random delay helps prevent the stations from experiencing another collision during transmission.
Network Layer
255.255.255.224

24. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
UTP

25. What is dinamically selected by the source host when forwarding data?
Show Interfaces
Source Port
IP is not properly installed
Hosts return to listen-before-transmit mode.

26. What are key considering factors when grouping hosts into common networks?
Resolve IPv4 addresses to MAC addresses.
A. purpose b. geographic location c. ownership
Router(config)# hostname Costas
Twisting of the cables

27. What are 3 properties of contention-based media access for a shared media?
Logical Link Control sublayer
Network Access
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. non-deterministic b. less overhead c. collisions exist

28. At which layers of the OSI model does ethernet operate?
Network Access
Network
Is used by the server to resolve names.
A. physical layer b. DLL layer

29. What do the intermediary devices in the network do?
A. non-deterministic b. less overhead c. collisions exist
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
Rollover cable
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

30. What is the function of the DLL?
It has expanded adressing capabilities.
A. enable mode b. priviledge executive mode
It provides for the exchange of data over a common local media.
It uses lasers as the light source.

31. 3 features of IPv6
Create signals that represent the bits in each frame for the media.
A. larger address space b. data types and classes of service c. authentication and encryption
A. netstat -r b. route PRINT
Minimal delays in data delivery.

32. What are 2 email components used to forward mail between servers?
Next-Hop Address
A. Physical b. Data Link
Identify processes or services that are communicating with end devices.
A. MTA b. SMTP

33. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Host mobility
As the commands are entered.

34. What determines the method of media access control?
Hub
The physical address is added.
A. physical layer b. DLL layer
A. media sharing b. logical topology

35. What type of network cable is used between a terminal and a console port?
No collisions will occur on this link.
Rollover cable
A. application b. services
A. flow control b. session establishment c. numbering and sequencing

36. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
As the commands are entered.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Physical
A. servers b. routers c. network printers

37. Which combination of keys can be used to interrupt a ping or traceroute process?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Rollover cable
Ctrl + Shift + 6
A. they initiate data exchanges b. they may upload data to servers

38. 3 common problems w/ a large network
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
As the commands are entered.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. performance degradation b. security issues c. host identification

39. 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. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
As the commands are entered.

40. What information is added during encapsulation at OSI Layer 3?
Router(config)# hostname Costas
A. decentralized resources b. resource sharing w/o a dedicated server
Source and Destination IP address
Switch

41. When a network service fails - which port is most often used to access a router for management purposes?
A. replace a switch w/ a router b. subnet the new networks
172.16.192.160
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Console

42. Important characteristic of UDP
Minimal delays in data delivery.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Host mobility
It has expanded adressing capabilities.

43. What describes the purpose of default route?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Host A
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
UDP

44. 3 characteristics of valid Ethernet Layer 2 addresses
A. Cat5 UTP b. Cat6 UTP
Console
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
The MAC protocol can be very simple.

45. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
0 to 1023
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
To facilitate the entry and exit of data on media.

46. 3 functions of the upper data link sublayer in the OSI model
A. flow control b. session establishment c. numbering and sequencing
Is a layer of specific encapsulation.
OTDR
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

47. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Is used by the server to resolve names.
255.255.255.224
Network

48. Which 2 options represent Layer 4 addressing?
OTDR
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. MTA b. SMTP

49. What is a benefit of a WAN?
Signal loss can be experienced.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host mobility

50. What makes fiber preferable to copper for interconnecting buildings?
Console
Resolve IPv4 addresses to MAC addresses.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long