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. There are too many broadcasts on switches - what can be done?
A. replace a switch w/ a router b. subnet the new networks
FTP
To prevent the receiver from being overwhelmed by incoming data.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

2. What is the purpose of the TCP/IP Network Application Layer?
Is a layer of specific encapsulation.
To facilitate the entry and exit of data on media.
Network Media Control
Next-Hop Address

3. How many bits make up an IPv4 address?
A. replace a switch w/ a router b. subnet the new networks
0 to 1023
80 (HTTP)
32 bits

4. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
A. HTTP b. HTTPS
A. next-hop b. metric/interface c. destination network address
172.16.192.160
Destination Network Address

5. To make a console connection from a comp to a Cisco router - what cable should be used?
A default gateway (router).
Rollover cable
A. DB 60 b. Winchester 15-pin c. smart serial
Create signals that represent the bits in each frame for the media.

6. 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 physical topology.
2046
Transport

7. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
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
It has expanded adressing capabilities.
172.16.192.160

8. 3 terms that define the forms of help available within the Cisco IOS
Switch
A. enable mode b. priviledge executive mode
Twisting of the cables
A. hot keys b. context-sensitive c. command syntax check

9. After an ethernet collision - which device has priority to transmit data?
Host A
The physical address is added.
Any device whose backoff timer expires first.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

10. Which portion of the network layer address does a router use to forward packets?
255.255.255.224
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. router b. firewall
Network portion

11. 3 features that allow TCP to realibly and accurately track the transmission of data
8
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. flow control b. session establishment c. numbering and sequencing
Logical Link Control sublayer

12. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
0 to 1023
SMB
A default gateway (router).
RJ-45

13. What is a drawback of the CSMA/CD access method?
The MAC protocol can be very simple.
Collisions can decrease network performance.
To enable a receiving host to forward the data to the appropriate application.
255.255.255.224

14. What are 2 features of User Diagram Protocol (UDP)?
A. low overhead b. connectionless
Network Layer Packet
Host mobility
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

15. An admin needs to keep contents private - which access method should he use?
SSH
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
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
DNS

16. 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.
Physical
A. low overhead b. connectionless
A physical topology.

17. What type of network cable is used between a terminal and a console port?
255.255.255.0
Network portion
Rollover cable
To facilitate the entry and exit of data on media.

18. What correctly describes a MAC address?
Router(config)# hostname Costas
IP Protocol
A. decentralized resources b. resource sharing w/o a dedicated server
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

19. Where is the IOS file stored at?
A. servers b. routers c. network printers
Flash
Ctrl + Shift + 6
Router(config)# hostname Costas

20. What is PDU?
No collisions will occur on this link.
A. they initiate data exchanges b. they may upload data to servers
Console interface
Is a layer of specific encapsulation.

21. What networking devices are recommended to be assigned static IP addresses?
A. purpose b. geographic location c. ownership
Flash
A. servers b. routers c. network printers
Is a layer of specific encapsulation.

22. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
IP is not properly installed
Hub
A random delay helps prevent the stations from experiencing another collision during transmission.

23. In a connectionless system - What is correct?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
UTP
Network portion
Destination is not contacted before a packet is sent.

24. What do you need to use for an initial configuration on a Cisco router?
Console interface
Originate data flow.
Window Size
When connecting a host to a switch.

25. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
Destination is not contacted before a packet is sent.
Twisting of the cables
To prevent the receiver from being overwhelmed by incoming data.
IP is not properly installed

26. What is the proper order of the OSI Layers?
SMB
A. application b. presentation c. session d. transmision e. network f. data link g. physical
OTDR
Window Size

27. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. addressing b. error detection c. frame delimiting
Is used by the server to resolve names.
A. enable mode b. priviledge executive mode
Next-Hop Address

28. What command can be used to determine if the router has experienced any input or output errors?
Network portion
A. replace a switch w/ a router b. subnet the new networks
Physical
Show Interfaces

29. 3 properties of peer-2-peer applications
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. non-deterministic b. less overhead c. collisions exist
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. router b. firewall

30. What are 2 commands used to view a host routing table?
A. low overhead b. connectionless
FTP
A. netstat -r b. route PRINT
A. servers b. routers c. network printers

31. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
A. it has centralized administration b. security is easier to enforce
The magnetic field around the adjacent pairs of wire.
A. purpose b. geographic location c. ownership

32. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
Rollover cable
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
The destination host address.

33. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Show Interfaces
A. application b. services
80 (HTTP)
Any device whose backoff timer expires first.

34. 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
It has expanded adressing capabilities.
Router(config)# interface FastEthernet 0/1
To enable a receiving host to forward the data to the appropriate application.

35. What info is found in the TCP and UDP header info?
Destination Network Address
Source and Destination Ports
They must wait until the first hosts finish transfering the media.
To facilitate the entry and exit of data on media.

36. When do changes take effect in a Cisco router?
The destination host address.
As the commands are entered.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. larger address space b. data types and classes of service c. authentication and encryption

37. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Destination Network Address
RJ-45

38. What can get you to an outside network?
It reduces unnecessary broadcasts.
Rollover cable
A default gateway (router).
Show Interfaces

39. What event occurs during the 3-way handshake?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Rollover cable
0 to 1023
TCP initializes the sequence numbers for the sessions.

40. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
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. media sharing b. logical topology
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

41. 3 statements of media acess control
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
Signal loss can be experienced.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
They must wait until the first hosts finish transfering the media.

42. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
Identify processes or services that are communicating with end devices.
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
Time-to-live (TTL)

43. What is a protocol that provides connectionless network layer services?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Logical Link Control sublayer
Host mobility
IP Protocol

44. 3 characteristics of valid Ethernet Layer 2 addresses
A backbone cable.
Console
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

45. In business LANs - which connector is used w/ twisted-pair networking cable?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
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. flow control b. session establishment c. numbering and sequencing
RJ-45

46. What do end devices do?
Originate data flow.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. servers b. routers c. network printers
Console

47. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
A. performance degradation b. security issues c. host identification
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Network portion

48. What causes crosstalk within cable pairs when using UTP?
32 bits
The magnetic field around the adjacent pairs of wire.
A. addressing b. error detection c. frame delimiting
UDP

49. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
255.255.255.0
A. hot keys b. context-sensitive c. command syntax check
A. flow control b. session establishment c. numbering and sequencing

50. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Hub
Create signals that represent the bits in each frame for the media.
A. flow control b. session establishment c. numbering and sequencing
Source and Destination IP address