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 are 2 email components used to forward mail between servers?
When connecting a host to a switch.
Wireless
A. MTA b. SMTP
Source Port

2. 3 statements about routes and their use
32 bits
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
As the commands are entered.
A. application b. services

3. 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
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. the router will discard the packet b. the router will send a time exceeded message to the source host
Twisting of the cables
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

4. 3 factors that should be considered when implementing Layer 2 protocols
A. DNS b. SMTP c. POP
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Host mobility
IP Protocol

5. What do you need to use for an initial configuration on a Cisco router?
DNS
Binary ANDing
255.255.255.224
Console interface

6. Default Gateway is incorrect on the host - What is the impact on the communications?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Source Port
Host A
Console

7. What is a benefit of a WAN?
Host mobility
Router(config)# interface FastEthernet 0/1
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
255.255.255.0

8. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The MAC protocol can be very simple.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

9. What command is used to change the default name to 'Costas'?
It provides for the exchange of data over a common local media.
A. application b. services
Router(config)# hostname Costas
A. minimizing of collisions b. division into broadcast domains

10. What statements describe the logical token-passing topology?
The address of the router that the host will use to 'get to the other side'.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. enable mode b. priviledge executive mode
A. goodput b. throughput c. bandwidth

11. What makes fiber preferable to copper for interconnecting buildings?
A. application b. services
Is used by the server to resolve names.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

12. How many bits make up an IPv4 address?
It reduces unnecessary broadcasts.
32 bits
Supports error detection.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

13. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
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
Switch
A. show startup-config b. show running-config

14. What are 2 commands used to view a host routing table?
Hosts return to listen-before-transmit mode.
To prevent the receiver from being overwhelmed by incoming data.
A. netstat -r b. route PRINT
Router(config)# hostname Costas

15. What determines the method of media access control?
A. media sharing b. logical topology
Ctrl + Shift + 6
Logical Link Control sublayer
32 bits

16. What is the purpose of the TCP/IP Network Application Layer?
32 bits
Network Media Control
It provides for the exchange of data over a common local media.
A. DB 60 b. Winchester 15-pin c. smart serial

17. 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?
A. perform degradation b. security issues c. host identification
Originate data flow.
It provides interface between applications on either end of the network.
Host A

18. 2 most commonly used media types in ethernet networks
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 portion
The address of the router that the host will use to 'get to the other side'.
A. copper UTP b. optical fiber

19. What is a drawback of the CSMA/CD access method?
To facilitate the entry and exit of data on media.
Collisions can decrease network performance.
Is used by the server to resolve names.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

20. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
A. servers b. routers c. network printers
Hosts return to listen-before-transmit mode.
255.255.255.224

21. What are 3 pieces of info about a route contained in a routing table?
A. DB 60 b. Winchester 15-pin c. smart serial
A physical topology.
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. next-hop b. metric/interface c. destination network address

22. What do the intermediary devices in the network do?
Rollover cable
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Ctrl + Shift + 6
A physical topology.

23. What 2 type of cables would most commonly be used for new runs?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
32 bits
TCP initializes the sequence numbers for the sessions.
A. Cat5 UTP b. Cat6 UTP

24. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
It uses support from the lower layers to distinguish between connections to the service.
Physical
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The physical address is added.

25. What can you identify when you examine the Network Layer header?
A random delay helps prevent the stations from experiencing another collision during transmission.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
The physical address is added.
The destination host address.

26. 3 characteristics of valid Ethernet Layer 2 addresses
A. physical layer b. DLL layer
IP Protocol
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

27. 2 functions of encapsulation
Minimal delays in data delivery.
Show Interfaces
When connecting a host to a switch.
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

28. Which layer supplies services and allows user interface?
TCP initializes the sequence numbers for the sessions.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
When connecting a host to a switch.
Application Layer

29. What correctly describes a MAC address?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A random delay helps prevent the stations from experiencing another collision during transmission.
Show Interfaces

30. What is a characteristic of a logical point-to-point topology?
Collisions can decrease network performance.
To facilitate the entry and exit of data on media.
The MAC protocol can be very simple.
When connecting a host to a switch.

31. 2 characteristics of clients in data networks
Wireless
A. they initiate data exchanges b. they may upload data to servers
The MAC protocol can be very simple.
SMB

32. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
255.255.255.0
2046

33. 2 features that make switches preferable to hubs
When connecting a host to a switch.
Create signals that represent the bits in each frame for the media.
Identify processes or services that are communicating with end devices.
A. minimizing of collisions b. division into broadcast domains

34. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
0 to 1023
A. perform degradation b. security issues c. host identification
UTP
Console interface

35. What is a characteristic of a single-mode fiber-optic cable?
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
Is used by the server to resolve names.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
It uses lasers as the light source.

36. What type of network cable is used between a terminal and a console port?
The packets will be delivered and reassembled at destination.
Source and Destination Ports
Rollover cable
No collisions will occur on this link.

37. 3 statements of media acess control
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Host A
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. MTA b. SMTP

38. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Hosts return to listen-before-transmit mode.
Binary ANDing
0 to 1023
DNS

39. What is dinamically selected by the source host when forwarding data?
The address of the router that the host will use to 'get to the other side'.
Console
SMB
Source Port

40. What are 2 common characteristics associated w/ dynamic routing protocols?
Switch
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
2046

41. When do changes take effect in a Cisco router?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Static
As the commands are entered.
Flash

42. What networking devices are recommended to be assigned static IP addresses?
A. non-deterministic b. less overhead c. collisions exist
To prevent the receiver from being overwhelmed by incoming data.
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. servers b. routers c. network printers

43. What event occurs during the 3-way handshake?
80 (HTTP)
TCP initializes the sequence numbers for the sessions.
A. MTA b. SMTP
Console interface

44. 3 primary functions of the data link layer encapsulation
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. addressing b. error detection c. frame delimiting
When connecting a host to a switch.
A. MTA b. SMTP

45. What is the primary rope of the physical layer in transmitting data?
The physical address is added.
Time-to-live (TTL)
Network portion
Create signals that represent the bits in each frame for the media.

46. When a device is moved from one network to the other...?
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
Binary ANDing
It provides interface between applications on either end of the network.
Hub

47. What are 2 features of User Diagram Protocol (UDP)?
When connecting a host to a switch.
A. purpose b. geographic location c. ownership
Identify processes or services that are communicating with end devices.
A. low overhead b. connectionless

48. An admin needs to keep contents private - which access method should he use?
Window Size
SSH
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Ctrl + Shift + 6

49. To make a console connection from a comp to a Cisco router - what cable should be used?
Supports error detection.
A. flow control b. session establishment c. numbering and sequencing
Rollover cable
Host A

50. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
MAC
2046
A. performance degradation b. security issues c. host identification
A physical topology.