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 is the purpose of the TCP/IP Network Application Layer?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
To enable a receiving host to forward the data to the appropriate application.
The destination host address.
Network Media Control

2. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
It uses support from the lower layers to distinguish between connections to the service.
A. Physical b. Data Link
IP is not properly installed
MAC

3. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
Source and Destination Ports
Signal loss can be experienced.
A. Cat5 UTP b. Cat6 UTP

4. Which combination of keys can be used to interrupt a ping or traceroute process?
A. hot keys b. context-sensitive c. command syntax check
OTDR
Ctrl + Shift + 6
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

5. During encapsulation - what happens in the Data Link Layer?
Network Layer
Network Access
The physical address is added.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

6. 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?
Ctrl + Shift + 6
172.16.192.160
A random delay helps prevent the stations from experiencing another collision during transmission.
A. application b. services

7. 3 statements about routes and their use
Router(config)# hostname Costas
8
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

8. If you have a small network w/ 3 computers...
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
Hub
Hosts return to listen-before-transmit mode.

9. 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. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. replace a switch w/ a router b. subnet the new networks
A. non-deterministic b. less overhead c. collisions exist
Host A

10. At which layer of the TCP/IP model does ethernet operate?
Network Access
Hub
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
Network Layer

11. What is the primary function of encapsulating packets into frames?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
It has expanded adressing capabilities.
A. decentralized resources b. resource sharing w/o a dedicated server
To facilitate the entry and exit of data on media.

12. What method of signal transmission uses radio waves to carry signals?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Static
Wireless
255.255.255.0

13. 3 features that allow TCP to realibly and accurately track the transmission of data
Rollover cable
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Network Media Control
A. flow control b. session establishment c. numbering and sequencing

14. What can be a problem that is reduced by adding end-to-end addressing?
Next-Hop Address
It reduces unnecessary broadcasts.
Console interface
Router

15. What is the purpose of a default gateway?
A physical topology.
Identify the device that allows local network computers to communicate w/ devices in other networks.
A default gateway (router).
A. the router will discard the packet b. the router will send a time exceeded message to the source host

16. 3 statements of media acess control
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
The physical address is added.
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
It provides interface between applications on either end of the network.

17. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
The MAC protocol can be very simple.
0 to 1023
A. enable mode b. priviledge executive mode
Is used by the server to resolve names.

18. What is the primary reason for developing IPv6?
Network Layer
It has expanded adressing capabilities.
A. netstat -r b. route PRINT
A. larger address space b. data types and classes of service c. authentication and encryption

19. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. minimizing of collisions b. division into broadcast domains
Router(config)# hostname Costas
A random delay helps prevent the stations from experiencing another collision during transmission.
UDP

20. 2 functions of encapsulation
Resolve IPv4 addresses to MAC addresses.
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
Signal loss can be experienced.

21. statements of IP adressing
A. router b. firewall
Binary ANDing
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
A. not affected by EMI of RFI b. most expensive type of LAN cabling

22. What are 2 common characteristics associated w/ dynamic routing protocols?
A. low overhead b. connectionless
Static
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

23. What are 3 pieces of info about a route contained in a routing table?
A. larger address space b. data types and classes of service c. authentication and encryption
A. copper UTP b. optical fiber
OTDR
A. next-hop b. metric/interface c. destination network address

24. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Ctrl + Shift + 6
The destination host address.
Network address
A. show startup-config b. show running-config

25. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Source and Destination Ports
The destination host address.
A. Physical b. Data Link
Network Layer Packet

26. What is an effect of improperly applying a network cable connector?
A. they initiate data exchanges b. they may upload data to servers
Network Layer Packet
Destination is not contacted before a packet is sent.
Signal loss can be experienced.

27. What is the purpose of the preamble in an ethernet frame?
A. low overhead b. connectionless
Show Interfaces
Minimal delays in data delivery.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

28. 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?
They must wait until the first hosts finish transfering the media.
A. DB 60 b. Winchester 15-pin c. smart serial
A. addressing b. error detection c. frame delimiting
255.255.255.224

29. 3 facts about the network portion of an IPv4 address
Minimal delays in data delivery.
A. they initiate data exchanges b. they may upload data to servers
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Router

30. To make a console connection from a comp to a Cisco router - what cable should be used?
A. it has centralized administration b. security is easier to enforce
A default gateway (router).
Rollover cable
It provides for the exchange of data over a common local media.

31. During a TCP session - if packets arrive out of order - what will happen?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Network portion
The packets will be delivered and reassembled at destination.
32 bits

32. 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
IP is not properly installed
A. performance degradation b. security issues c. host identification
Network portion

33. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
A random delay helps prevent the stations from experiencing another collision during transmission.
255.255.255.224
OTDR

34. What type of network cable is used between a terminal and a console port?
Rollover cable
IP is not properly installed
A. copper UTP b. optical fiber
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

35. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
Rollover cable
Flash
The packets will be delivered and reassembled at destination.

36. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
Minimal delays in data delivery.
8
A. low overhead b. connectionless

37. What networking devices are recommended to be assigned static IP addresses?
Create signals that represent the bits in each frame for the media.
Resolve IPv4 addresses to MAC addresses.
It uses support from the lower layers to distinguish between connections to the service.
A. servers b. routers c. network printers

38. What do you need to use for an initial configuration on a Cisco router?
Destination is not contacted before a packet is sent.
A. addressing b. error detection c. frame delimiting
A. physical layer b. DLL layer
Console interface

39. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
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. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
The physical address is added.

40. If there is a graphic representation of a company network wiring and equipment - What is this called?
As the commands are entered.
A. application b. services
A physical topology.
It reduces unnecessary broadcasts.

41. What is the primary purpose of Layer 4?
Hosts return to listen-before-transmit mode.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
When connecting a host to a switch.
Identify processes or services that are communicating with end devices.

42. 3 primary functions of the data link layer encapsulation
No collisions will occur on this link.
A. router b. firewall
Flash
A. addressing b. error detection c. frame delimiting

43. What is a drawback of the CSMA/CD access method?
Supports error detection.
Collisions can decrease network performance.
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. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

44. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. purpose b. geographic location c. ownership
The MAC protocol can be very simple.
Physical

45. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
MAC
A. netstat -r b. route PRINT
The address of the router that the host will use to 'get to the other side'.
A backbone cable.

46. What is a characteristic of a single-mode fiber-optic cable?
A. non-deterministic b. less overhead c. collisions exist
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It uses lasers as the light source.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

47. What are 2 forms of application layer software?
2046
172.16.192.160
A. application b. services
Rollover cable

48. 3 features of IPv6
Any device whose backoff timer expires first.
A. larger address space b. data types and classes of service c. authentication and encryption
2046
A. performance degradation b. security issues c. host identification

49. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. DB 60 b. Winchester 15-pin c. smart serial
Router
Source Port

50. Which portion of the network layer address does a router use to forward packets?
A. Physical b. Data Link
Network portion
It uses support from the lower layers to distinguish between connections to the service.
A. HTTP b. HTTPS