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 are 2 commands used to view a host routing table?
Network address
A. netstat -r b. route PRINT
A. media sharing b. logical topology
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

2. 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. hot keys b. context-sensitive c. command syntax check
Hosts return to listen-before-transmit mode.
A. low overhead b. connectionless
Host A

3. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A physical topology.
The physical address is added.
0 to 1023
UDP

4. Network Protocols
Minimal delays in data delivery.
Network Layer
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Destination Network Address

5. Which layer supplies services and allows user interface?
They must wait until the first hosts finish transfering the media.
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Application Layer
The destination host address.

6. What is the purpose of the preamble in an ethernet frame?
A. Cat5 UTP b. Cat6 UTP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
DNS
A. enable mode b. priviledge executive mode

7. If you have a small network w/ 3 computers...
Flash
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. Physical b. Data Link
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

8. If there is a graphic representation of a company network wiring and equipment - What is this called?
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. addressing b. error detection c. frame delimiting
A. DB 60 b. Winchester 15-pin c. smart serial
A physical topology.

9. What connectors are commonly associated w/ Cisco's V.35 serial cables?
OTDR
A. DB 60 b. Winchester 15-pin c. smart serial
A. addressing b. error detection c. frame delimiting
A. physical layer b. DLL layer

10. What is a default gateway address?

11. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Network Layer
A. show startup-config b. show running-config
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
FTP

12. Why are port numbers included in the TCP header of a segment?
UDP
To enable a receiving host to forward the data to the appropriate application.
The MAC protocol can be very simple.
A. show startup-config b. show running-config

13. What is a benefit of a WAN?
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
IP Protocol
Host mobility
MAC

14. 3 common problems w/ a large network
Console
A. next-hop b. metric/interface c. destination network address
A. performance degradation b. security issues c. host identification
SMB

15. Which device is used to create or divide broadcast domains?
Router
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
255.255.255.0
Originate data flow.

16. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. addressing b. error detection c. frame delimiting
A. they initiate data exchanges b. they may upload data to servers
Resolve IPv4 addresses to MAC addresses.
255.255.255.0

17. Important characteristic of UDP
32 bits
A. Physical b. Data Link
0 to 1023
Minimal delays in data delivery.

18. What is the function of the DLL?
It provides for the exchange of data over a common local media.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Wireless
A. performance degradation b. security issues c. host identification

19. What is the primary purpose of ARP?
TCP initializes the sequence numbers for the sessions.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Resolve IPv4 addresses to MAC addresses.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

20. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Time-to-live (TTL)
Fiber
A. low overhead b. connectionless
Signal loss can be experienced.

21. What 2 type of cables would most commonly be used for new runs?
Twisting of the cables
The destination host address.
Network Access
A. Cat5 UTP b. Cat6 UTP

22. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. router b. firewall
Hub
To prevent the receiver from being overwhelmed by incoming data.
MAC

23. 3 measures of data transfer
Router(config)# hostname Costas
A. media sharing b. logical topology
A. goodput b. throughput c. bandwidth
A. decentralized resources b. resource sharing w/o a dedicated server

24. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Logical Link Control sublayer
Create signals that represent the bits in each frame for the media.
It has expanded adressing capabilities.
Network Layer Packet

25. What type of network cable is used between a terminal and a console port?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Network Media Control
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Rollover cable

26. What are 3 properties of contention-based media access for a shared media?
Ctrl + Shift + 6
Wireless
A. non-deterministic b. less overhead c. collisions exist
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

27. What does the IEEE 802.2 standard represent in Ethernet technologies?
Transport
A. Cat5 UTP b. Cat6 UTP
Logical Link Control sublayer
A. show startup-config b. show running-config

28. Which portion of the network layer address does a router use to forward packets?
Router
The packets will be delivered and reassembled at destination.
Network portion
UTP

29. What networking devices are recommended to be assigned static IP addresses?
A. servers b. routers c. network printers
It provides interface between applications on either end of the network.
A. DNS b. SMTP c. POP
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

30. 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. 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
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

31. What do you need to use for an initial configuration on a Cisco router?
Console interface
Host A
A. Cat5 UTP b. Cat6 UTP
The packets will be delivered and reassembled at destination.

32. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
Identify processes or services that are communicating with end devices.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

33. At which layers of the OSI model does ethernet operate?
Ctrl + Shift + 6
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Time-to-live (TTL)
A. physical layer b. DLL layer

34. What is an automated service that matches resource names w/ required IP addresses?
DNS
A. hot keys b. context-sensitive c. command syntax check
Application Layer
To prevent the receiver from being overwhelmed by incoming data.

35. What method of signal transmission uses radio waves to carry signals?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Wireless
DNS
Collisions can decrease network performance.

36. What is dinamically selected by the source host when forwarding data?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. router b. firewall
A. it has centralized administration b. security is easier to enforce
Source Port

37. What is PDU?
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
Is a layer of specific encapsulation.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Identify processes or services that are communicating with end devices.

38. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
Any device whose backoff timer expires first.
A backbone cable.
OTDR

39. 3 terms that define the forms of help available within the Cisco IOS
A. DB 60 b. Winchester 15-pin c. smart serial
Console
Any device whose backoff timer expires first.
A. hot keys b. context-sensitive c. command syntax check

40. What is the proper order of the OSI Layers?
FTP
Show Interfaces
Is used by the server to resolve names.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

41. 3 protocols that operate in the application layer
2046
Ctrl + Shift + 6
TCP initializes the sequence numbers for the sessions.
A. DNS b. SMTP c. POP

42. What is a protocol that provides connectionless network layer services?
IP Protocol
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Host A
Any device whose backoff timer expires first.

43. 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
Destination Network Address
Logical Link Control sublayer
A. addressing b. error detection c. frame delimiting

44. Where is the IOS file stored at?
Fiber
Flash
To enable a receiving host to forward the data to the appropriate application.
A. non-deterministic b. less overhead c. collisions exist

45. 2 characteristics of clients in data networks
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. router b. firewall
A. they initiate data exchanges b. they may upload data to servers

46. What kind of problems are caused by excessive broadcast traffic on network segments?
Is used by the server to resolve names.
Identify processes or services that are communicating with end devices.
IP Protocol
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

47. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
Network address
A. flow control b. session establishment c. numbering and sequencing
IP is not properly installed

48. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
Application Layer
It has expanded adressing capabilities.
Flash

49. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
Network Layer
Network portion
A. MTA b. SMTP

50. What is a drawback of the CSMA/CD access method?
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
Collisions can decrease network performance.
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. application b. services