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 command can be used to determine if the router has experienced any input or output errors?
Create signals that represent the bits in each frame for the media.
Network Layer
A. addressing b. error detection c. frame delimiting
Show Interfaces

2. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
Any device whose backoff timer expires first.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
32 bits

3. What is the role of MTA in handling email?
No collisions will occur on this link.
RJ-45
Flash
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

4. What are 2 forms of application layer software?
Rollover cable
A. application b. services
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. DNS b. SMTP c. POP

5. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
It reduces unnecessary broadcasts.
A. media sharing b. logical topology
A. performance degradation b. security issues c. host identification
A. Physical b. Data Link

6. What is the role of the OSI Application Layer?
A. it has centralized administration b. security is easier to enforce
A. Cat5 UTP b. Cat6 UTP
255.255.255.224
It provides interface between applications on either end of the network.

7. 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
TCP initializes the sequence numbers for the sessions.
Supports error detection.
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

8. 3 features that allow TCP to realibly and accurately track the transmission of data
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. flow control b. session establishment c. numbering and sequencing
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
No collisions will occur on this link.

9. What is PDU?
Rollover cable
A. DNS b. SMTP c. POP
Is a layer of specific encapsulation.
A physical topology.

10. Which 2 options represent Layer 4 addressing?
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. identifies the communicating applications b. identifies multiple conversations between the hosts
A. perform degradation b. security issues c. host identification
A backbone cable.

11. 3 protocols that operate in the application layer
A. replace a switch w/ a router b. subnet the new networks
A. DNS b. SMTP c. POP
172.16.192.160
A. it has centralized administration b. security is easier to enforce

12. There are too many broadcasts on switches - what can be done?
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. replace a switch w/ a router b. subnet the new networks
It provides interface between applications on either end of the network.

13. When a device is moved from one network to the other...?
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
Rollover cable
UTP
Network Layer Packet

14. Why is flow control used for TCP data transfer?
Transport
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
To prevent the receiver from being overwhelmed by incoming data.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

15. What is the primary purpose of Layer 4?
When connecting a host to a switch.
IP is not properly installed
The magnetic field around the adjacent pairs of wire.
Identify processes or services that are communicating with end devices.

16. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
It provides for the exchange of data over a common local media.
Ctrl + Shift + 6
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Twisting of the cables

17. Network Protocols
A. MTA b. SMTP
Collisions can decrease network performance.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Host A

18. Intermediary devices used to implement security between networks
A. copper UTP b. optical fiber
A. router b. firewall
It uses support from the lower layers to distinguish between connections to the service.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

19. When a network service fails - which port is most often used to access a router for management purposes?
Console
8
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. larger address space b. data types and classes of service c. authentication and encryption

20. What is dinamically selected by the source host when forwarding data?
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. DB 60 b. Winchester 15-pin c. smart serial
Source Port
A. DNS b. SMTP c. POP

21. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
A. perform degradation b. security issues c. host identification
Network Layer Packet
Hub
Minimal delays in data delivery.

22. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
It provides interface between applications on either end of the network.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A random delay helps prevent the stations from experiencing another collision during transmission.
Router(config)# hostname Costas

23. What is the function of the DLL?
It provides for the exchange of data over a common local media.
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. 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. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

24. statements of IP adressing
Show Interfaces
A. larger address space b. data types and classes of service c. authentication and encryption
To enable a receiving host to forward the data to the appropriate application.
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

25. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
MAC
Rollover cable
A. hot keys b. context-sensitive c. command syntax check

26. What is a protocol that provides connectionless network layer services?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
MAC
A. DNS b. SMTP c. POP
IP Protocol

27. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
SMB
The magnetic field around the adjacent pairs of wire.
Static

28. 2 most commonly used media types in ethernet networks
Destination is not contacted before a packet is sent.
A. copper UTP b. optical fiber
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Console interface

29. 2 characteristics of peer-2-peer
Flash
Minimal delays in data delivery.
A. decentralized resources b. resource sharing w/o a dedicated server
Supports error detection.

30. What is the primary purpose of ARP?
Network Media Control
A. flow control b. session establishment c. numbering and sequencing
Resolve IPv4 addresses to MAC addresses.
They must wait until the first hosts finish transfering the media.

31. At which layers of the OSI model does ethernet operate?
A. physical layer b. DLL layer
A. next-hop b. metric/interface c. destination network address
Fiber
A. netstat -r b. route PRINT

32. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
A. decentralized resources b. resource sharing w/o a dedicated server
A. it has centralized administration b. security is easier to enforce
Network address
It has expanded adressing capabilities.

33. What connectors are commonly associated w/ Cisco's V.35 serial cables?
172.16.192.160
Console interface
Switch
A. DB 60 b. Winchester 15-pin c. smart serial

34. What makes fiber preferable to copper for interconnecting buildings?
Is used by the server to resolve names.
SMB
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Network

35. What are 3 common problems w/ large networks?
The MAC protocol can be very simple.
A. show startup-config b. show running-config
A. perform degradation b. security issues c. host identification
Network address

36. What information is added during encapsulation at OSI Layer 3?
Rollover cable
As the commands are entered.
Binary ANDing
Source and Destination IP address

37. What do end devices do?
IP is not properly installed
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Show Interfaces
Originate data flow.

38. What causes crosstalk within cable pairs when using UTP?
MAC
A. replace a switch w/ a router b. subnet the new networks
It provides interface between applications on either end of the network.
The magnetic field around the adjacent pairs of wire.

39. What are 2 email components used to forward mail between servers?
Is a layer of specific encapsulation.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. MTA b. SMTP
A. larger address space b. data types and classes of service c. authentication and encryption

40. 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
0 to 1023
Rollover cable
Fiber

41. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
IP Protocol
A. router b. firewall
A. perform degradation b. security issues c. host identification
UDP

42. 2 features that make switches preferable to hubs
Transport
IP Protocol
A. minimizing of collisions b. division into broadcast domains
A. performance degradation b. security issues c. host identification

43. What is the purpose of the TCP/IP Network Application Layer?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
DNS
Signal loss can be experienced.
Network Media Control

44. 2 characteristics of clients in data networks
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. performance degradation b. security issues c. host identification
A. perform degradation b. security issues c. host identification
A. they initiate data exchanges b. they may upload data to servers

45. What type of routing uses information that is manually entered into the routing table?
A. performance degradation b. security issues c. host identification
Identify the device that allows local network computers to communicate w/ devices in other networks.
Hub
Static

46. What describes the purpose of default route?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. larger address space b. data types and classes of service c. authentication and encryption
Identify the device that allows local network computers to communicate w/ devices in other networks.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

47. How does the application layer on a server process multiple client requests for services?
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. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Hosts return to listen-before-transmit mode.
It uses support from the lower layers to distinguish between connections to the service.

48. What statements describe the logical token-passing topology?
The packets will be delivered and reassembled at destination.
0 to 1023
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. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

49. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. non-deterministic b. less overhead c. collisions exist
Supports error detection.
Minimal delays in data delivery.
A. copper UTP b. optical fiber

50. 3 features of IPv6
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
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. not affected by EMI of RFI b. most expensive type of LAN cabling