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 type of network cable is used between a terminal and a console port?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Hosts return to listen-before-transmit mode.
To prevent the receiver from being overwhelmed by incoming data.
Rollover cable

2. What is a disadvantage of Telnet?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
It does not support encryption.
A default gateway (router).
Console interface

3. What are the advantages of using a client-server model?
A. performance degradation b. security issues c. host identification
RJ-45
A. it has centralized administration b. security is easier to enforce
Signal loss can be experienced.

4. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Network Layer Packet
Host mobility
Rollover cable
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

5. What statements describe the logical token-passing topology?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. physical layer b. DLL layer
Twisting of the cables

6. What is an automated service that matches resource names w/ required IP addresses?
DNS
FTP
A. DNS b. SMTP c. POP
Console

7. An admin needs to keep contents private - which access method should he use?
SSH
DNS
No collisions will occur on this link.
A. it has centralized administration b. security is easier to enforce

8. 3 measures of data transfer
IP Protocol
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. goodput b. throughput c. bandwidth
Hub

9. What are 3 common problems w/ large networks?
Window Size
A default gateway (router).
Host A
A. perform degradation b. security issues c. host identification

10. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. it has centralized administration b. security is easier to enforce
A. identifies the communicating applications b. identifies multiple conversations between the hosts
UTP
Physical

11. What event occurs during the 3-way handshake?
Minimal delays in data delivery.
A. application b. services
UTP
TCP initializes the sequence numbers for the sessions.

12. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
UDP
Flash
IP is not properly installed
A. performance degradation b. security issues c. host identification

13. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
TCP initializes the sequence numbers for the sessions.
Binary ANDing
A. router b. firewall
Source and Destination IP address

14. What command is used to change the default name to 'Costas'?
A. Physical b. Data Link
Router(config)# hostname Costas
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. DB 60 b. Winchester 15-pin c. smart serial

15. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Physical
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
Host mobility

16. What is a benefit of a WAN?
A. low overhead b. connectionless
Host mobility
Hub
Resolve IPv4 addresses to MAC addresses.

17. 2 most commonly used media types in ethernet networks
A. hot keys b. context-sensitive c. command syntax check
A. copper UTP b. optical fiber
2046
The destination host address.

18. What are 3 properties of contention-based media access for a shared media?
They must wait until the first hosts finish transfering the media.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. non-deterministic b. less overhead c. collisions exist
A. perform degradation b. security issues c. host identification

19. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
IP is not properly installed
Physical
Network portion
Identify processes or services that are communicating with end devices.

20. What are 2 forms of application layer software?
Flash
The address of the router that the host will use to 'get to the other side'.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. application b. services

21. What correctly describes a MAC address?
The MAC protocol can be very simple.
A. addressing b. error detection c. frame delimiting
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. next-hop b. metric/interface c. destination network address

22. What does the IEEE 802.2 standard represent in Ethernet technologies?
Rollover cable
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
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
Logical Link Control sublayer

23. When destination network is not in the routing table - What are 2 actions the router might take?
IP is not properly installed
A physical topology.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

24. What are key considering factors when grouping hosts into common networks?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
8
A. purpose b. geographic location c. ownership
Fiber

25. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
It provides interface between applications on either end of the network.
Physical
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

26. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
The address of the router that the host will use to 'get to the other side'.
MAC
The MAC protocol can be very simple.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

27. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
SMB
Network address
A. not affected by EMI of RFI b. most expensive type of LAN cabling
80 (HTTP)

28. 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?
Host A
Destination is not contacted before a packet is sent.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. physical layer b. DLL layer

29. Which portion of the network layer address does a router use to forward packets?
A. larger address space b. data types and classes of service c. authentication and encryption
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Network portion
Network Media Control

30. 2 features that make switches preferable to hubs
A. minimizing of collisions b. division into broadcast domains
Rollover cable
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Binary ANDing

31. What is the primary purpose of Layer 4?
Identify processes or services that are communicating with end devices.
A backbone cable.
A. performance degradation b. security issues c. host identification
IP Protocol

32. What connectors are commonly associated w/ Cisco's V.35 serial cables?
UDP
SSH
A. DB 60 b. Winchester 15-pin c. smart serial
UTP

33. What are 2 commands used to view a host routing table?
Minimal delays in data delivery.
255.255.255.0
A. non-deterministic b. less overhead c. collisions exist
A. netstat -r b. route PRINT

34. What is the primary rope of the physical layer in transmitting data?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. low overhead b. connectionless
A. DB 60 b. Winchester 15-pin c. smart serial
Create signals that represent the bits in each frame for the media.

35. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
Hosts return to listen-before-transmit mode.
Network Media Control
8
A. hot keys b. context-sensitive c. command syntax check

36. When a device is moved from one network to the other...?
Twisting of the cables
A. MTA b. SMTP
Application Layer
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

37. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
A. HTTP b. HTTPS
UDP
OTDR

38. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
0 to 1023
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

39. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
The packets will be delivered and reassembled at destination.
SMB
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
SSH

40. What is a protocol that provides connectionless network layer services?
It provides interface between applications on either end of the network.
A. replace a switch w/ a router b. subnet the new networks
IP Protocol
A. minimizing of collisions b. division into broadcast domains

41. 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
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. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Router(config)# interface FastEthernet 0/1
A. the router will discard the packet b. the router will send a time exceeded message to the source host

42. 3 terms that define the forms of help available within the Cisco IOS
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It reduces unnecessary broadcasts.
It provides interface between applications on either end of the network.
A. hot keys b. context-sensitive c. command syntax check

43. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Router
0 to 1023
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. HTTP b. HTTPS

44. Why are port numbers included in the TCP header of a segment?
To enable a receiving host to forward the data to the appropriate application.
Create signals that represent the bits in each frame for the media.
RJ-45
Binary ANDing

45. What do you need to use for an initial configuration on a Cisco router?
A backbone cable.
Transport
Console interface
A. Physical b. Data Link

46. How does the application layer on a server process multiple client requests for services?
IP is not properly installed
It uses support from the lower layers to distinguish between connections to the service.
UTP
Router

47. Intermediary devices used to implement security between networks
Supports error detection.
SMB
It does not support encryption.
A. router b. firewall

48. 3 functions of the upper data link sublayer in the OSI model
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. next-hop b. metric/interface c. destination network address
A. servers b. routers c. network printers

49. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
Show Interfaces
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. enable mode b. priviledge executive mode
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

50. What do end devices do?
Physical
Originate data flow.
Hosts return to listen-before-transmit mode.
A. media sharing b. logical topology