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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. 3 protocols that operate in the application layer
Minimal delays in data delivery.
When connecting a host to a switch.
A. DNS b. SMTP c. POP
A. media sharing b. logical topology

2. statements of IP adressing
Identify processes or services that are communicating with end devices.
DNS
Switch
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

3. What are the advantages of using a client-server model?
A. media sharing b. logical topology
A. it has centralized administration b. security is easier to enforce
Router
Source and Destination Ports

4. What characteristic of an UTP helps reduce interference?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Twisting of the cables
It has expanded adressing capabilities.
A. purpose b. geographic location c. ownership

5. In a connectionless system - What is correct?
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
Destination is not contacted before a packet is sent.
IP Protocol
Identify processes or services that are communicating with end devices.

6. 3 measures of data transfer
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. HTTP b. HTTPS
Static
A. goodput b. throughput c. bandwidth

7. 3 features of IPv6
IP is not properly installed
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. larger address space b. data types and classes of service c. authentication and encryption
Originate data flow.

8. 3 features that allow TCP to realibly and accurately track the transmission of data
Router(config)# interface FastEthernet 0/1
The physical address is added.
A. enable mode b. priviledge executive mode
A. flow control b. session establishment c. numbering and sequencing

9. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. 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.
2046
It provides for the exchange of data over a common local media.

10. What is the primary rope of the physical layer in transmitting data?
A. minimizing of collisions b. division into broadcast domains
It uses support from the lower layers to distinguish between connections to the service.
A. larger address space b. data types and classes of service c. authentication and encryption
Create signals that represent the bits in each frame for the media.

11. Where is the IOS file stored at?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
To facilitate the entry and exit of data on media.
Flash
MAC

12. What device can check for faults - integrity and performance of media?
It has expanded adressing capabilities.
OTDR
A. show startup-config b. show running-config
To prevent the receiver from being overwhelmed by incoming data.

13. What type of routing uses information that is manually entered into the routing table?
SMB
Static
Fiber
Switch

14. What is a protocol that provides connectionless network layer services?
Identify the device that allows local network computers to communicate w/ devices in other networks.
IP Protocol
Rollover cable
A. they initiate data exchanges b. they may upload data to servers

15. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
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
Ctrl + Shift + 6
32 bits

16. What layer encapsulates segments into packets?
Rollover cable
A. MTA b. SMTP
A. router b. firewall
Network Layer

17. What is a default gateway address?

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18. Why are port numbers included in the TCP header of a segment?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Router
To enable a receiving host to forward the data to the appropriate application.

19. Which device is used to create or divide broadcast domains?
Router
A. hot keys b. context-sensitive c. command syntax check
172.16.192.160
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

20. What is a component of a routing table entry?
Transport
Next-Hop Address
Minimal delays in data delivery.
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

21. 2 functions of encapsulation
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Transport
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
Logical Link Control sublayer

22. Which combination of keys can be used to interrupt a ping or traceroute process?
UDP
Fiber
Ctrl + Shift + 6
Resolve IPv4 addresses to MAC addresses.

23. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
UDP
A. application b. services
A. performance degradation b. security issues c. host identification

24. 3 statements about the role of routers in the network
Logical Link Control sublayer
A. purpose b. geographic location c. ownership
A. hot keys b. context-sensitive c. command syntax check
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

25. What are 2 forms of application layer software?
Logical Link Control sublayer
A. application b. services
255.255.255.0
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

26. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
Create signals that represent the bits in each frame for the media.
Originate data flow.
Signal loss can be experienced.
8

27. Intermediary devices used to implement security between networks
Supports error detection.
A. HTTP b. HTTPS
A. router b. firewall
Source and Destination Ports

28. How does the application layer on a server process multiple client requests for services?
255.255.255.0
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
It uses support from the lower layers to distinguish between connections to the service.
A. minimizing of collisions b. division into broadcast domains

29. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
Window Size
Create signals that represent the bits in each frame for the media.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

30. 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?
Rollover cable
UTP
Any device whose backoff timer expires first.
A. show startup-config b. show running-config

31. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. servers b. routers c. network printers
It uses support from the lower layers to distinguish between connections to the service.
It does not support encryption.
A. DB 60 b. Winchester 15-pin c. smart serial

32. Default Gateway is incorrect on the host - What is the impact on the communications?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
It uses lasers as the light source.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Hosts return to listen-before-transmit mode.

33. How many bits make up an IPv4 address?
Rollover cable
32 bits
Network Layer
UTP

34. Which 2 options represent Layer 4 addressing?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. identifies the communicating applications b. identifies multiple conversations between the hosts
To enable a receiving host to forward the data to the appropriate application.
Wireless

35. 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?
The packets will be delivered and reassembled at destination.
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. Cat5 UTP b. Cat6 UTP
They must wait until the first hosts finish transfering the media.

36. What do you need to use for an initial configuration on a Cisco router?
IP is not properly installed
Console interface
A. MTA b. SMTP
Fiber

37. What application layer protocol is used to support file transfers between client and server?
Signal loss can be experienced.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. goodput b. throughput c. bandwidth
FTP

38. What are 2 commands used to view a host routing table?
Is a layer of specific encapsulation.
The physical address is added.
A. netstat -r b. route PRINT
Hub

39. 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?
2046
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
SSH
Network Media Control

40. What is the purpose of the TCP/IP Network Application Layer?
It has expanded adressing capabilities.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Network Media Control
As the commands are entered.

41. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
A. DB 60 b. Winchester 15-pin c. smart serial
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Rollover cable

42. What correctly describes a MAC address?
A. purpose b. geographic location c. ownership
A. DB 60 b. Winchester 15-pin c. smart serial
They must wait until the first hosts finish transfering the media.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

43. If you have a small network w/ 3 computers...
Destination is not contacted before a packet is sent.
UTP
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
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

44. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
A. minimizing of collisions b. division into broadcast domains
Window Size
Time-to-live (TTL)
Is used by the server to resolve names.

45. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
A. DB 60 b. Winchester 15-pin c. smart serial
Network
A. low overhead b. connectionless

46. 3 facts about the network portion of an IPv4 address
Network portion
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
UDP

47. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A physical topology.
Collisions can decrease network performance.
Network Layer Packet
A default gateway (router).

48. 3 factors that should be considered when implementing Layer 2 protocols
Hub
Fiber
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Originate data flow.

49. When do changes take effect in a Cisco router?
Source and Destination Ports
As the commands are entered.
Destination Network Address
To enable a receiving host to forward the data to the appropriate application.

50. What is the purpose of the preamble in an ethernet frame?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
To enable a receiving host to forward the data to the appropriate application.
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