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 can you identify when you examine the Network Layer header?
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.
It provides interface between applications on either end of the network.
The destination host address.

2. Which combination of keys can be used to interrupt a ping or traceroute process?
Router
Hub
Ctrl + Shift + 6
Router(config)# interface FastEthernet 0/1

3. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Destination Network Address
Transport
No collisions will occur on this link.
Physical

4. What type of routing uses information that is manually entered into the routing table?
A. Physical b. Data Link
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
Static
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

5. An admin needs to keep contents private - which access method should he use?
Destination Network Address
Source and Destination Ports
SSH
A. HTTP b. HTTPS

6. What is a protocol that provides connectionless network layer services?
Console interface
IP Protocol
FTP
A. minimizing of collisions b. division into broadcast domains

7. 2 features that make switches preferable to hubs
A. DNS b. SMTP c. POP
A. minimizing of collisions b. division into broadcast domains
Minimal delays in data delivery.
A. router b. firewall

8. To make a console connection from a comp to a Cisco router - what cable should be used?
The packets will be delivered and reassembled at destination.
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
Rollover cable
32 bits

9. What command is used to change the default name to 'Costas'?
A. DNS b. SMTP c. POP
Router(config)# hostname Costas
A. identifies the communicating applications b. identifies multiple conversations between the hosts
They must wait until the first hosts finish transfering the media.

10. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Window Size
SSH

11. What is the role of MTA in handling email?
Fiber
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. show startup-config b. show running-config
Physical

12. 2 functions of encapsulation
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
0 to 1023
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
Fiber

13. What is the primary reason for developing IPv6?
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
Binary ANDing
Originate data flow.
It has expanded adressing capabilities.

14. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. show startup-config b. show running-config
A. Physical b. Data Link
The packets will be delivered and reassembled at destination.
A. larger address space b. data types and classes of service c. authentication and encryption

15. What is the purpose of the TCP/IP Network Application Layer?
80 (HTTP)
Network Media Control
As the commands are entered.
The magnetic field around the adjacent pairs of wire.

16. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
MAC
Router(config)# hostname Costas
Window Size
Physical

17. What kind of problems are caused by excessive broadcast traffic on network segments?
Router
32 bits
80 (HTTP)
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

18. What is a disadvantage of Telnet?
Collisions can decrease network performance.
SSH
It does not support encryption.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

19. What is the role of the OSI Application Layer?
To enable a receiving host to forward the data to the appropriate application.
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
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It provides interface between applications on either end of the network.

20. What is the purpose of resource records in DNS?
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.
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
A. media sharing b. logical topology

21. Why is flow control used for TCP data transfer?
A. physical layer b. DLL layer
To prevent the receiver from being overwhelmed by incoming data.
Logical Link Control sublayer
UTP

22. 3 properties of peer-2-peer applications
A. addressing b. error detection c. frame delimiting
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
Network Layer Packet
IP Protocol

23. What is a component of a routing table entry?
UTP
Next-Hop Address
Console interface
OTDR

24. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. enable mode b. priviledge executive mode
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

25. What is a benefit of a WAN?
IP is not properly installed
Host mobility
A. show startup-config b. show running-config
A. identifies the communicating applications b. identifies multiple conversations between the hosts

26. Statements that describe LAN
172.16.192.160
The address of the router that the host will use to 'get to the other side'.
Router(config)# hostname Costas
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

27. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. they initiate data exchanges b. they may upload data to servers
Switch
Show Interfaces

28. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
Host A
To enable a receiving host to forward the data to the appropriate application.
A. MTA b. SMTP
255.255.255.0

29. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
A. next-hop b. metric/interface c. destination network address
172.16.192.160
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

30. 2 most commonly used media types in ethernet networks
UDP
Router(config)# interface FastEthernet 0/1
Source and Destination IP address
A. copper UTP b. optical fiber

31. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
No collisions will occur on this link.
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. application b. services
Binary ANDing

32. What is a characteristic of a single-mode fiber-optic cable?
To enable a receiving host to forward the data to the appropriate application.
It uses lasers as the light source.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network portion

33. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
A. flow control b. session establishment c. numbering and sequencing
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. enable mode b. priviledge executive mode

34. Where is the IOS file stored at?
Network Access
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Flash
8

35. What is the primary purpose of Layer 4?
It does not support encryption.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Network Access
Identify processes or services that are communicating with end devices.

36. What characteristic of an UTP helps reduce interference?
A. Physical b. Data Link
A. addressing b. error detection c. frame delimiting
Twisting of the cables
A. they initiate data exchanges b. they may upload data to servers

37. What correctly describes a MAC address?
Network Layer
A. router b. firewall
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Collisions can decrease network performance.

38. 3 primary functions of the data link layer encapsulation
Flash
8
A. addressing b. error detection c. frame delimiting
A physical topology.

39. What is a default gateway address?

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40. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. netstat -r b. route PRINT
A. non-deterministic b. less overhead c. collisions exist
Console interface
A physical topology.

41. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
SSH
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. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Rollover cable

42. What command can be used to determine if the router has experienced any input or output errors?
255.255.255.224
The address of the router that the host will use to 'get to the other side'.
Window Size
Show Interfaces

43. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Destination Network Address
Identify the device that allows local network computers to communicate w/ devices in other networks.
Signal loss can be experienced.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

44. 3 statements about the role of routers in 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
Application Layer
A. router b. firewall
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

45. Which characteristics describe fiber optic cable?
The physical address is added.
255.255.255.0
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

46. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
Source and Destination Ports
Router(config)# hostname Costas
Create signals that represent the bits in each frame for the media.

47. 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?
2046
Hub
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. media sharing b. logical topology

48. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
Twisting of the cables
A. decentralized resources b. resource sharing w/o a dedicated server
255.255.255.224

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?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. show startup-config b. show running-config
They must wait until the first hosts finish transfering the media.
Source and Destination IP address

50. When destination network is not in the routing table - What are 2 actions the router might take?
Is a layer of specific encapsulation.
Network Media Control
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential