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 networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
They must wait until the first hosts finish transfering the media.
Any device whose backoff timer expires first.

2. At which layers of the OSI model does ethernet operate?
Network
255.255.255.0
A. physical layer b. DLL layer
Transport

3. What determines the method of media access control?
As the commands are entered.
IP is not properly installed
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. media sharing b. logical topology

4. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Network
Destination Network Address
Hub
Ctrl + Shift + 6

5. At which layer of the TCP/IP model does ethernet operate?
It does not support encryption.
Network Access
Hosts return to listen-before-transmit mode.
IP Protocol

6. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Transport
Supports error detection.
Source and Destination Ports

7. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
The destination host address.
Network Layer Packet
A. application b. services

8. What does the IEEE 802.2 standard represent in Ethernet technologies?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Logical Link Control sublayer
Binary ANDing
OTDR

9. What do you need to use for an initial configuration on a Cisco router?
The MAC protocol can be very simple.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Console interface
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

10. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Supports error detection.
Hosts return to listen-before-transmit mode.
TCP initializes the sequence numbers for the sessions.

11. What is the purpose of the TCP/IP Network Application Layer?
Twisting of the cables
A. hot keys b. context-sensitive c. command syntax check
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network Media Control

12. Which characteristics describe fiber optic cable?
Is a layer of specific encapsulation.
Application Layer
Resolve IPv4 addresses to MAC addresses.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

13. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
The destination host address.
Signal loss can be experienced.

14. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
SMB
A. purpose b. geographic location c. ownership
A random delay helps prevent the stations from experiencing another collision during transmission.
A. media sharing b. logical topology

15. 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
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
Transport
Logical Link Control sublayer

16. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
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
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

17. What are 2 features of User Diagram Protocol (UDP)?
It reduces unnecessary broadcasts.
Destination Network Address
A. low overhead b. connectionless
Collisions can decrease network performance.

18. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Ctrl + Shift + 6
UDP
Create signals that represent the bits in each frame for the media.

19. 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?
Host A
IP is not properly installed
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

20. What is a component of a routing table entry?
A. HTTP b. HTTPS
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
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Next-Hop Address

21. What command can be used to determine if the router has experienced any input or output errors?
A. non-deterministic b. less overhead c. collisions exist
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Show Interfaces
A physical topology.

22. What is PDU?
A. MTA b. SMTP
2046
Is a layer of specific encapsulation.
A. next-hop b. metric/interface c. destination network address

23. If you have a full-duplex operational network - what can happen?
A. media sharing b. logical topology
No collisions will occur on this link.
0 to 1023
It uses support from the lower layers to distinguish between connections to the service.

24. 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?
To prevent the receiver from being overwhelmed by incoming data.
A. show startup-config b. show running-config
2046
Static

25. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
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
8
255.255.255.224
Source and Destination IP address

26. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
A. DNS b. SMTP c. POP
Network Access
Network Media Control

27. What is a characteristic of a logical point-to-point topology?
Minimal delays in data delivery.
A. enable mode b. priviledge executive mode
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
The MAC protocol can be very simple.

28. When a network service fails - which port is most often used to access a router for management purposes?
Console
When connecting a host to a switch.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
As the commands are entered.

29. What statements describe the logical token-passing topology?
MAC
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
UDP
Switch

30. statements of IP adressing
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
Identify processes or services that are communicating with end devices.
A. next-hop b. metric/interface c. destination network address
Resolve IPv4 addresses to MAC addresses.

31. Default Gateway is incorrect on the host - What is the impact on the communications?
Identify processes or services that are communicating with end devices.
To facilitate the entry and exit of data on media.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

32. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Static
0 to 1023
Host A
Physical

33. An admin needs to keep contents private - which access method should he use?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
UTP
Destination Network Address
SSH

34. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
A. they initiate data exchanges b. they may upload data to servers
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Destination is not contacted before a packet is sent.

35. What describes the purpose of default route?
A. larger address space b. data types and classes of service c. authentication and encryption
FTP
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

36. What are 2 protocols for transfering web resources?
A. flow control b. session establishment c. numbering and sequencing
A. HTTP b. HTTPS
Router(config)# hostname Costas
DNS

37. 3 properties of peer-2-peer applications
It provides interface between applications on either end of the network.
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. the router will discard the packet b. the router will send a time exceeded message to the source host
Any device whose backoff timer expires first.

38. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
When connecting a host to a switch.
Host A
Router(config)# interface FastEthernet 0/1
Logical Link Control sublayer

39. What characteristic of an UTP helps reduce interference?
Twisting of the cables
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
UTP
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

40. What is the role of the OSI Application Layer?
Application Layer
Switch
It provides interface between applications on either end of the network.
They must wait until the first hosts finish transfering the media.

41. Network Protocols
Application Layer
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Network Access
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

42. What is the role of MTA in handling email?
DNS
To facilitate the entry and exit of data on media.
Host A
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

43. What type of routing uses information that is manually entered into the routing table?
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. application b. services
They must wait until the first hosts finish transfering the media.
Static

44. During encapsulation - what happens in the Data Link Layer?
OTDR
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
The physical address is added.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

45. What is the purpose of the preamble in an ethernet frame?
To prevent the receiver from being overwhelmed by incoming data.
Destination Network Address
A. replace a switch w/ a router b. subnet the new networks
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

46. 3 statements about routes and their use
Source and Destination Ports
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Network Layer
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

47. What can be a problem that is reduced by adding end-to-end addressing?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Source and Destination IP address
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It reduces unnecessary broadcasts.

48. To make a console connection from a comp to a Cisco router - what cable should be used?
Create signals that represent the bits in each frame for the media.
Fiber
It uses support from the lower layers to distinguish between connections to the service.
Rollover cable

49. 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?
To enable a receiving host to forward the data to the appropriate application.
They must wait until the first hosts finish transfering the media.
As the commands are entered.
A. servers b. routers c. network printers

50. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Collisions can decrease network performance.
Hosts return to listen-before-transmit mode.
Source and Destination Ports
As the commands are entered.