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?
As the commands are entered.
Rollover cable
Static
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

2. What are 2 common characteristics associated w/ dynamic routing protocols?
UDP
255.255.255.0
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

3. 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. servers b. routers c. network printers
A. larger address space b. data types and classes of service c. authentication and encryption
172.16.192.160
SSH

4. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Binary ANDing
A default gateway (router).
A. the router will discard the packet b. the router will send a time exceeded message to the source host
MAC

5. 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?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
2046
A. minimizing of collisions b. division into broadcast domains
Host mobility

6. 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
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
255.255.255.0
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

7. What do the intermediary devices in the network do?
Network portion
A. enable mode b. priviledge executive mode
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. larger address space b. data types and classes of service c. authentication and encryption

8. After an ethernet collision - which device has priority to transmit data?
A. replace a switch w/ a router b. subnet the new networks
Wireless
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Any device whose backoff timer expires first.

9. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
A. hot keys b. context-sensitive c. command syntax check
80 (HTTP)
Binary ANDing

10. 3 statements of media acess control
MAC
To enable a receiving host to forward the data to the appropriate application.
Destination Network Address
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

11. There are too many broadcasts on switches - what can be done?
Binary ANDing
RJ-45
The address of the router that the host will use to 'get to the other side'.
A. replace a switch w/ a router b. subnet the new networks

12. What characteristic of an UTP helps reduce interference?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
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
80 (HTTP)
Twisting of the cables

13. Intermediary devices used to implement security between networks
Is used by the server to resolve names.
A. physical layer b. DLL layer
A. router b. firewall
Console interface

14. What are 3 pieces of info about a route contained in a routing table?
A. HTTP b. HTTPS
A. next-hop b. metric/interface c. destination network address
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
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

15. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Router(config)# interface FastEthernet 0/1
Network Access
Host mobility
Hosts return to listen-before-transmit mode.

16. 3 protocols that operate in the application layer
The MAC protocol can be very simple.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. DNS b. SMTP c. POP
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

17. What can you identify when you examine the Network Layer header?
A default gateway (router).
The destination host address.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
IP Protocol

18. What event occurs during the 3-way handshake?
To prevent the receiver from being overwhelmed by incoming data.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
TCP initializes the sequence numbers for the sessions.
MAC

19. 3 facts about the network portion of an IPv4 address
A. minimizing of collisions b. division into broadcast domains
A. media sharing b. logical topology
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

20. What are 3 properties of contention-based media access for a shared media?
A. flow control b. session establishment c. numbering and sequencing
A. non-deterministic b. less overhead c. collisions exist
Minimal delays in data delivery.
A. it has centralized administration b. security is easier to enforce

21. To make a console connection from a comp to a Cisco router - what cable should be used?
A. addressing b. error detection c. frame delimiting
Rollover cable
Logical Link Control sublayer
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

22. What connectors are commonly associated w/ Cisco's V.35 serial cables?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. larger address space b. data types and classes of service c. authentication and encryption
A. DB 60 b. Winchester 15-pin c. smart serial
IP Protocol

23. In business LANs - which connector is used w/ twisted-pair networking cable?
A. media sharing b. logical topology
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
RJ-45
The physical address is added.

24. If you have a small network w/ 3 computers...
Physical
Switch
Network address
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

25. Which type of cable is most often associated w/ fiber-optic cable?
A backbone cable.
8
OTDR
Application Layer

26. During a TCP session - if packets arrive out of order - what will happen?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Router
Twisting of the cables
The packets will be delivered and reassembled at destination.

27. What does the IEEE 802.2 standard represent in Ethernet technologies?
A. DB 60 b. Winchester 15-pin c. smart serial
It uses lasers as the light source.
A. minimizing of collisions b. division into broadcast domains
Logical Link Control sublayer

28. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
172.16.192.160
It provides for the exchange of data over a common local media.
Hub

29. Which layer supplies services and allows user interface?
A. purpose b. geographic location c. ownership
Network Media Control
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Application Layer

30. If there is a graphic representation of a company network wiring and equipment - What is this called?
Hub
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. HTTP b. HTTPS
A physical topology.

31. What is a default gateway address?

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32. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Window Size
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
DNS

33. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
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
A. non-deterministic b. less overhead c. collisions exist
Switch
Hub

34. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Switch
Rollover cable

35. Which portion of the network layer address does a router use to forward packets?
Network Layer
Supports error detection.
Network portion
Create signals that represent the bits in each frame for the media.

36. Statements that describe LAN
A. media sharing b. logical topology
Network
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

37. When is a straight-through cable used in a network?
RJ-45
When connecting a host to a switch.
FTP
Rollover cable

38. 3 characteristics of valid Ethernet Layer 2 addresses
Any device whose backoff timer expires first.
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 does not support encryption.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

39. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
FTP
0 to 1023
Network Media Control
A. enable mode b. priviledge executive mode

40. Why are port numbers included in the TCP header of a segment?
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
To enable a receiving host to forward the data to the appropriate application.
Next-Hop Address
Originate data flow.

41. Default Gateway is incorrect on the host - What is the impact on the communications?
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
Rollover cable
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

42. What method of signal transmission uses radio waves to carry signals?
Wireless
Application Layer
Router
A. application b. presentation c. session d. transmision e. network f. data link g. physical

43. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
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
A. DNS b. SMTP c. POP
255.255.255.0
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

44. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
The packets will be delivered and reassembled at destination.
FTP
A. show startup-config b. show running-config
A. servers b. routers c. network printers

45. 3 features that allow TCP to realibly and accurately track the transmission of data
The physical address is added.
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. it has centralized administration b. security is easier to enforce
A. flow control b. session establishment c. numbering and sequencing

46. 2 features that make switches preferable to hubs
SMB
A. minimizing of collisions b. division into broadcast domains
Time-to-live (TTL)
To facilitate the entry and exit of data on media.

47. What is dinamically selected by the source host when forwarding data?
Source Port
A. servers b. routers c. network printers
Router(config)# hostname Costas
Rollover cable

48. 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
A. DB 60 b. Winchester 15-pin c. smart serial
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A backbone cable.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

49. When a device is moved from one network to the other...?
A. show startup-config b. show running-config
Physical
UTP
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

50. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. DB 60 b. Winchester 15-pin c. smart serial
IP Protocol