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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. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
A. minimizing of collisions b. division into broadcast domains
As the commands are entered.
A. application b. presentation c. session d. transmision e. network f. data link g. physical

2. What determines the method of media access control?
A. enable mode b. priviledge executive mode
A. media sharing b. logical topology
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
No collisions will occur on this link.

3. 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
Identify processes or services that are communicating with end devices.
A. Physical b. Data Link
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. minimizing of collisions b. division into broadcast domains

4. 2 functions of encapsulation
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. minimizing of collisions b. division into broadcast domains
A. Physical b. Data Link
It uses support from the lower layers to distinguish between connections to the service.

5. During encapsulation - what happens in the Data Link Layer?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
The physical address is added.
Static
Minimal delays in data delivery.

6. What command can be used to determine if the router has experienced any input or output errors?
Next-Hop Address
A. Physical b. Data Link
A. MTA b. SMTP
Show Interfaces

7. What device can check for faults - integrity and performance of media?
Network address
IP is not properly installed
A. show startup-config b. show running-config
OTDR

8. 2 characteristics of clients in data networks
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Wireless
A. they initiate data exchanges b. they may upload data to servers

9. What type of network cable is used between a terminal and a console port?
Next-Hop Address
TCP initializes the sequence numbers for the sessions.
A. minimizing of collisions b. division into broadcast domains
Rollover cable

10. After an ethernet collision - which device has priority to transmit data?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Any device whose backoff timer expires first.
Network Layer Packet
Source and Destination Ports

11. 3 protocols that operate in the application layer
To facilitate the entry and exit of data on media.
FTP
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. DNS b. SMTP c. POP

12. What method of signal transmission uses radio waves to carry signals?
Flash
Wireless
Network Access
A. show startup-config b. show running-config

13. 3 terms that define the forms of help available within the Cisco IOS
Router(config)# hostname Costas
Identify processes or services that are communicating with end devices.
A. hot keys b. context-sensitive c. command syntax check
Host mobility

14. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
Any device whose backoff timer expires first.
To facilitate the entry and exit of data on media.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
255.255.255.224

15. What is the function of the DLL?
A. larger address space b. data types and classes of service c. authentication and encryption
It provides for the exchange of data over a common local media.
Binary ANDing
Originate data flow.

16. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
A. purpose b. geographic location c. ownership
A. larger address space b. data types and classes of service c. authentication and encryption
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet

17. What is a protocol that provides connectionless network layer services?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
IP Protocol

18. What is the purpose of a default gateway?
Minimal delays in data delivery.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Network Layer Packet
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

19. What is a disadvantage of Telnet?
A. Physical b. Data Link
SSH
It does not support encryption.
172.16.192.160

20. 3 factors that should be considered when implementing Layer 2 protocols
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
The packets will be delivered and reassembled at destination.
Destination Network Address
255.255.255.224

21. What subnet mask will an admin assign to the network address 172.30.1.0 if its possible to have 254 hosts?
A. physical layer b. DLL layer
255.255.255.0
Is used by the server to resolve names.
A. it has centralized administration b. security is easier to enforce

22. 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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
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
As the commands are entered.

23. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Is used by the server to resolve names.
Network portion
0 to 1023
Router(config)# interface FastEthernet 0/1

24. What is the primary purpose of Layer 4?
Source and Destination IP address
It provides for the exchange of data over a common local media.
Binary ANDing
Identify processes or services that are communicating with end devices.

25. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
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. router b. firewall
OTDR
Binary ANDing

26. 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
It has expanded adressing capabilities.
Binary ANDing
A. not affected by EMI of RFI b. most expensive type of LAN cabling

27. How does the application layer on a server process multiple client requests for services?
It provides for the exchange of data over a common local media.
Wireless
It uses support from the lower layers to distinguish between connections to the service.
A. not affected by EMI of RFI b. most expensive type of LAN cabling

28. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
A. larger address space b. data types and classes of service c. authentication and encryption
255.255.255.0
DNS

29. What do the intermediary devices in the network do?
Network address
A. flow control b. session establishment c. numbering and sequencing
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Host mobility

30. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Rollover cable
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Network address
A. they initiate data exchanges b. they may upload data to servers

31. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
Transport
0 to 1023
Is a layer of specific encapsulation.

32. In a connectionless system - What is correct?
Network Layer
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Destination is not contacted before a packet is sent.
Twisting of the cables

33. 3 primary functions of the data link layer encapsulation
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. addressing b. error detection c. frame delimiting
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

34. What is a benefit of a WAN?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
They must wait until the first hosts finish transfering the media.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Host mobility

35. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
UTP
The packets will be delivered and reassembled at destination.
Originate data flow.
Switch

36. Which 2 options represent Layer 4 addressing?
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. decentralized resources b. resource sharing w/o a dedicated server
A. physical layer b. DLL layer
A. identifies the communicating applications b. identifies multiple conversations between the hosts

37. 3 statements of media acess control
Router(config)# interface FastEthernet 0/1
Ctrl + Shift + 6
Hosts return to listen-before-transmit mode.
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

38. At which layers of the OSI model does ethernet operate?
As the commands are entered.
OTDR
A. physical layer b. DLL layer
No collisions will occur on this link.

39. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Fiber
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It uses support from the lower layers to distinguish between connections to the service.

40. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
OTDR
A. addressing b. error detection c. frame delimiting
Supports error detection.
A. show startup-config b. show running-config

41. What is a characteristic of a logical point-to-point topology?
Minimal delays in data delivery.
Physical
The MAC protocol can be very simple.
It provides interface between applications on either end of the network.

42. What 2 type of cables would most commonly be used for new runs?
A. flow control b. session establishment c. numbering and sequencing
A. Cat5 UTP b. Cat6 UTP
Network Layer
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

43. What are 2 forms of application layer software?
A. application b. services
A. HTTP b. HTTPS
It does not support encryption.
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

44. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
A. they initiate data exchanges b. they may upload data to servers
SSH
MAC
Hub

45. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Logical Link Control sublayer
Destination is not contacted before a packet is sent.
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

46. What do you need to use for an initial configuration on a Cisco router?
Router
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
Console interface
The MAC protocol can be very simple.

47. If there is a graphic representation of a company network wiring and equipment - What is this called?
A physical topology.
IP is not properly installed
A. goodput b. throughput c. bandwidth
As the commands are entered.

48. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
8
Network Access
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

49. What is the purpose of the TCP/IP Network Application Layer?
Console
Network Media Control
Identify the device that allows local network computers to communicate w/ devices in other networks.
Source and Destination IP address

50. When a network service fails - which port is most often used to access a router for management purposes?
Console
Network portion
A. perform degradation b. security issues c. host identification
Source and Destination Ports