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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 statements about routes and their use
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
Physical
A. it has centralized administration b. security is easier to enforce
The packets will be delivered and reassembled at destination.

2. Where is the IOS file stored at?
8
Flash
As the commands are entered.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

3. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
The MAC protocol can be very simple.
Network address
Wireless
Identify processes or services that are communicating with end devices.

4. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
172.16.192.160
TCP initializes the sequence numbers for the sessions.
A. copper UTP b. optical fiber
Hub

5. After an ethernet collision - which device has priority to transmit data?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. Cat5 UTP b. Cat6 UTP
Any device whose backoff timer expires first.
A. servers b. routers c. network printers

6. Which portion of the network layer address does a router use to forward packets?
The packets will be delivered and reassembled at destination.
Network portion
A. enable mode b. priviledge executive mode
MAC

7. 3 terms that define the forms of help available within the Cisco IOS
A random delay helps prevent the stations from experiencing another collision during transmission.
A. hot keys b. context-sensitive c. command syntax check
A. addressing b. error detection c. frame delimiting
Destination Network Address

8. 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?
8
A. larger address space b. data types and classes of service c. authentication and encryption
A. DNS b. SMTP c. POP
Source and Destination IP address

9. What type of network cable is used between a terminal and a console port?
Rollover cable
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 reduces unnecessary broadcasts.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry

10. In business LANs - which connector is used w/ twisted-pair networking cable?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
RJ-45
Window Size
A. performance degradation b. security issues c. host identification

11. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
IP Protocol
Transport
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Binary ANDing

12. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
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
Transport
A. media sharing b. logical topology
Source and Destination Ports

13. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
Source Port
RJ-45
FTP

14. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
A. goodput b. throughput c. bandwidth
Host A
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

15. What command is used to change the default name to 'Costas'?
Host A
Console interface
Router(config)# hostname Costas
They must wait until the first hosts finish transfering the media.

16. What does the IEEE 802.2 standard represent in Ethernet technologies?
Logical Link Control sublayer
The MAC protocol can be very simple.
The address of the router that the host will use to 'get to the other side'.
Network portion

17. 3 factors that should be considered when implementing Layer 2 protocols
IP Protocol
Hosts return to listen-before-transmit mode.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
To facilitate the entry and exit of data on media.

18. 3 features of IPv6
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
Rollover cable
Supports error detection.

19. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
Wireless
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
SSH

20. In a connectionless system - What is correct?
Destination is not contacted before a packet is sent.
Next-Hop Address
Application Layer
Network portion

21. What are 3 properties of contention-based media access for a shared media?
A. non-deterministic b. less overhead c. collisions exist
UTP
Transport
MAC

22. What is a disadvantage of Telnet?
Is a layer of specific encapsulation.
Switch
A. netstat -r b. route PRINT
It does not support encryption.

23. What is the primary rope of the physical layer in transmitting data?
TCP initializes the sequence numbers for the sessions.
Create signals that represent the bits in each frame for the media.
Next-Hop Address
Logical Link Control sublayer

24. What event occurs during the 3-way handshake?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Is used by the server to resolve names.
TCP initializes the sequence numbers for the sessions.
Binary ANDing

25. What is the purpose of the TCP/IP Network Application Layer?
Network Media Control
A physical topology.
A. non-deterministic b. less overhead c. collisions exist
A. show startup-config b. show running-config

26. What is a characteristic of a logical point-to-point topology?
The MAC protocol can be very simple.
Network address
A. not affected by EMI of RFI b. most expensive type of LAN cabling
The address of the router that the host will use to 'get to the other side'.

27. 3 protocols that operate in the application layer
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. DNS b. SMTP c. POP
Network Layer
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

28. An admin needs to keep contents private - which access method should he use?
SSH
It provides interface between applications on either end of the network.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Source and Destination Ports

29. Which type of cable is most often associated w/ fiber-optic cable?
SSH
A. enable mode b. priviledge executive mode
Network address
A backbone cable.

30. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. enable mode b. priviledge executive mode
A backbone cable.
A. replace a switch w/ a router b. subnet the new networks

31. 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
The packets will be delivered and reassembled at destination.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Is a layer of specific encapsulation.

32. 3 measures of data transfer
A. decentralized resources b. resource sharing w/o a dedicated server
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. show startup-config b. show running-config
A. goodput b. throughput c. bandwidth

33. When do changes take effect in a Cisco router?
As the commands are entered.
A. next-hop b. metric/interface c. destination network address
Twisting of the cables
It is used for timing synchronization w/ alternating patterns of 1s and 0s.

34. What do the intermediary devices in the network do?
Hub
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

35. What is the purpose of resource records in DNS?
Is a layer of specific encapsulation.
Console
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Is used by the server to resolve names.

36. What are 2 forms of application layer software?
MAC
It provides interface between applications on either end of the network.
Flash
A. application b. services

37. What are 3 pieces of info about a route contained in a routing table?
Destination Network Address
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Any device whose backoff timer expires first.
A. next-hop b. metric/interface c. destination network address

38. What is the primary purpose of ARP?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Resolve IPv4 addresses to MAC addresses.
A. router b. firewall

39. If you have a small network w/ 3 computers...
Time-to-live (TTL)
A. netstat -r b. route PRINT
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. minimizing of collisions b. division into broadcast domains

40. What is a benefit of a WAN?
Host mobility
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. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
The address of the router that the host will use to 'get to the other side'.

41. 2 characteristics of peer-2-peer
The magnetic field around the adjacent pairs of wire.
A. decentralized resources b. resource sharing w/o a dedicated server
Console
A. larger address space b. data types and classes of service c. authentication and encryption

42. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
To facilitate the entry and exit of data on media.
It uses support from the lower layers to distinguish between connections to the service.
Network

43. What application layer protocol is used to support file transfers between client and server?
UDP
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
It uses lasers as the light source.
FTP

44. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Supports error detection.
A. HTTP b. HTTPS
A. non-deterministic b. less overhead c. collisions exist
Network Access

45. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. performance degradation b. security issues c. host identification
IP is not properly installed
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. enable mode b. priviledge executive mode

46. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Show Interfaces
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It uses lasers as the light source.
Hosts return to listen-before-transmit mode.

47. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
Network Access
The packets will be delivered and reassembled at destination.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

48. What causes crosstalk within cable pairs when using UTP?
The address of the router that the host will use to 'get to the other side'.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. perform degradation b. security issues c. host identification
The magnetic field around the adjacent pairs of wire.

49. If there is a graphic representation of a company network wiring and equipment - What is this called?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
IP Protocol
A. MTA b. SMTP
A physical topology.

50. What is the purpose of the preamble in an ethernet frame?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Signal loss can be experienced.
Console