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 type of network cable is used between a terminal and a console port?
Destination Network Address
Rollover cable
SMB
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

2. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Logical Link Control sublayer
Hub
Network Media Control

3. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Source and Destination Ports
Physical
A. identifies the communicating applications b. identifies multiple conversations between the hosts
0 to 1023

4. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Window Size
Console interface
Network Layer

5. When do changes take effect in a Cisco router?
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
They must wait until the first hosts finish transfering the media.
As the commands are entered.
A. flow control b. session establishment c. numbering and sequencing

6. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
UDP
Hosts return to listen-before-transmit mode.
Collisions can decrease network performance.
To enable a receiving host to forward the data to the appropriate application.

7. What is the primary purpose of Layer 4?
Is a layer of specific encapsulation.
Flash
Identify processes or services that are communicating with end devices.
When connecting a host to a switch.

8. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
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
Hosts return to listen-before-transmit mode.
A. performance degradation b. security issues c. host identification

9. What is a benefit of a WAN?
Network
Flash
Host mobility
They must wait until the first hosts finish transfering the media.

10. What is the proper order of the OSI Layers?
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. larger address space b. data types and classes of service c. authentication and encryption
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

11. What info is found in the TCP and UDP header info?
MAC
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Source and Destination Ports
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

12. 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
The MAC protocol can be very simple.
To facilitate the entry and exit of data on media.
A. servers b. routers c. network printers

13. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
A. performance degradation b. security issues c. host identification
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Hosts return to listen-before-transmit mode.
255.255.255.224

14. Network Protocols
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
It uses support from the lower layers to distinguish between connections to the service.
Router
Rollover cable

15. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
To enable a receiving host to forward the data to the appropriate application.
Network address
UTP
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

16. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Host A
Destination Network Address
Window Size
Fiber

17. 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
A. the router will discard the packet b. the router will send a time exceeded message to the source host
SSH
The magnetic field around the adjacent pairs of wire.

18. 2 characteristics of clients in data networks
A. they initiate data exchanges b. they may upload data to servers
Hosts return to listen-before-transmit mode.
No collisions will occur on this link.
A. purpose b. geographic location c. ownership

19. What is the primary rope of the physical layer in transmitting data?
Identify processes or services that are communicating with end devices.
Source and Destination IP address
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Create signals that represent the bits in each frame for the media.

20. 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?
80 (HTTP)
To prevent the receiver from being overwhelmed by incoming data.
172.16.192.160
A. the router will discard the packet b. the router will send a time exceeded message to the source host

21. What do end devices do?
Originate data flow.
Window Size
RJ-45
SSH

22. What does the IEEE 802.2 standard represent in Ethernet technologies?
To facilitate the entry and exit of data on media.
A. copper UTP b. optical fiber
Logical Link Control sublayer
Is used by the server to resolve names.

23. What method of signal transmission uses radio waves to carry signals?
A default gateway (router).
Rollover cable
Wireless
Is used by the server to resolve names.

24. What is an automated service that matches resource names w/ required IP addresses?
No collisions will occur on this link.
Is a layer of specific encapsulation.
DNS
MAC

25. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Source and Destination Ports
Source Port
Is used by the server to resolve names.

26. To make a console connection from a comp to a Cisco router - what cable should be used?
Hub
Rollover cable
A. copper UTP b. optical fiber
Network

27. 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
No collisions will occur on this link.
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. the router will discard the packet b. the router will send a time exceeded message to the source host
UDP

28. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
80 (HTTP)
DNS
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. low overhead b. connectionless

29. When a network service fails - which port is most often used to access a router for management purposes?
Console
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Flash
Is used by the server to resolve names.

30. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
2046
UDP
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Is used by the server to resolve names.

31. What are 2 email components used to forward mail between servers?
A. MTA b. SMTP
A. servers b. routers c. network printers
Rollover cable
Switch

32. Intermediary devices used to implement security between networks
A. show startup-config b. show running-config
A. router b. firewall
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Physical

33. Which type of cable is most often associated w/ fiber-optic cable?
A. application b. services
Flash
Originate data flow.
A backbone cable.

34. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. enable mode b. priviledge executive mode
Next-Hop Address
Host A

35. What information is added during encapsulation at OSI Layer 3?
A. copper UTP b. optical fiber
Source and Destination IP address
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.

36. What are 2 commands used to view a host routing table?
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
172.16.192.160
A. application b. services
A. netstat -r b. route PRINT

37. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Network
Network Media Control
A. perform degradation b. security issues c. host identification
Switch

38. What can be a problem that is reduced by adding end-to-end addressing?
A. larger address space b. data types and classes of service c. authentication and encryption
It reduces unnecessary broadcasts.
Destination Network Address
Identify the device that allows local network computers to communicate w/ devices in other networks.

39. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
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 physical topology.
Router

40. In business LANs - which connector is used w/ twisted-pair networking cable?
A. application b. services
A. non-deterministic b. less overhead c. collisions exist
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
RJ-45

41. Which layer supplies services and allows user interface?
Application Layer
Hosts return to listen-before-transmit mode.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Console interface

42. What is the purpose of the TCP/IP Network Application Layer?
It uses lasers as the light source.
Network Media Control
A physical topology.
A. non-deterministic b. less overhead c. collisions exist

43. What are 2 features of User Diagram Protocol (UDP)?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Application Layer
A. low overhead b. connectionless
IP Protocol

44. What is a drawback of the CSMA/CD access method?
Rollover cable
8
Application Layer
Collisions can decrease network performance.

45. What do you need to use for an initial configuration on a Cisco router?
Rollover cable
Console interface
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. hot keys b. context-sensitive c. command syntax check

46. Which combination of keys can be used to interrupt a ping or traceroute process?
RJ-45
Collisions can decrease network performance.
Ctrl + Shift + 6
As the commands are entered.

47. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Twisting of the cables
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. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network address

48. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Switch
A. enable mode b. priviledge executive mode
IP is not properly installed
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

49. What can get you to an outside network?
It has expanded adressing capabilities.
IP is not properly installed
A default gateway (router).
To enable a receiving host to forward the data to the appropriate application.

50. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Source and Destination Ports
Router(config)# interface FastEthernet 0/1
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. goodput b. throughput c. bandwidth