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 info is found in the TCP and UDP header info?
Router(config)# hostname Costas
Network Layer Packet
Host A
Source and Destination Ports

2. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A physical topology.
A. perform degradation b. security issues c. host identification
8

3. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. decentralized resources b. resource sharing w/o a dedicated server
UTP
Network Layer

4. 2 features that make switches preferable to hubs
UDP
A. minimizing of collisions b. division into broadcast domains
Ctrl + Shift + 6
Signal loss can be experienced.

5. What is dinamically selected by the source host when forwarding data?
Source Port
SMB
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
TCP initializes the sequence numbers for the sessions.

6. 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.
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. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
8

7. What are the advantages of using a client-server model?
255.255.255.224
A. it has centralized administration b. security is easier to enforce
Destination Network Address
A physical topology.

8. 3 functions of the upper data link sublayer in the OSI model
A. Physical b. Data Link
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
As the commands are entered.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

9. Which combination of keys can be used to interrupt a ping or traceroute process?
Window Size
A. next-hop b. metric/interface c. destination network address
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
Ctrl + Shift + 6

10. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
A. router b. firewall
A. servers b. routers c. network printers
Static

11. What command is used to change the default name to 'Costas'?
They must wait until the first hosts finish transfering the media.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Router(config)# hostname Costas
32 bits

12. In a connectionless system - What is correct?
Switch
A. identifies the communicating applications b. identifies multiple conversations between the hosts
When connecting a host to a switch.
Destination is not contacted before a packet is sent.

13. To make a console connection from a comp to a Cisco router - what cable should be used?
Network Layer Packet
Rollover cable
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. servers b. routers c. network printers

14. During a TCP session - if packets arrive out of order - what will happen?
Rollover cable
A. next-hop b. metric/interface c. destination network address
Wireless
The packets will be delivered and reassembled at destination.

15. 2 characteristics of clients in data networks
To enable a receiving host to forward the data to the appropriate application.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
It provides interface between applications on either end of the network.
A. they initiate data exchanges b. they may upload data to servers

16. What is the role of the OSI Application Layer?
2046
Logical Link Control sublayer
8
It provides interface between applications on either end of the network.

17. What can get you to an outside network?
A. perform degradation b. security issues c. host identification
A default gateway (router).
Rollover cable
To facilitate the entry and exit of data on media.

18. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. decentralized resources b. resource sharing w/o a dedicated server
SMB
Source and Destination Ports
80 (HTTP)

19. What are 2 forms of application layer software?
The destination host address.
SMB
A. application b. services
They must wait until the first hosts finish transfering the media.

20. After an ethernet collision - which device has priority to transmit data?
Network Media Control
Show Interfaces
IP Protocol
Any device whose backoff timer expires first.

21. What is the primary reason for developing IPv6?
Rollover cable
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. enable mode b. priviledge executive mode
It has expanded adressing capabilities.

22. 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?
Host A
It reduces unnecessary broadcasts.
The MAC protocol can be very simple.
A. show startup-config b. show running-config

23. What is the role of MTA in handling email?
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
80 (HTTP)
Is used by the server to resolve names.
A. servers b. routers c. network printers

24. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
The destination host address.
Router(config)# interface FastEthernet 0/1
Logical Link Control sublayer

25. During encapsulation - what happens in the Data Link Layer?
172.16.192.160
Rollover cable
The physical address is added.
Network Layer Packet

26. What is a benefit of a WAN?
Time-to-live (TTL)
Host mobility
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Hub

27. How does the application layer on a server process multiple client requests for services?
Time-to-live (TTL)
It uses lasers as the light source.
It uses support from the lower layers to distinguish between connections to the service.
Destination is not contacted before a packet is sent.

28. When a device is moved from one network to the other...?
Router(config)# interface FastEthernet 0/1
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Static
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

29. Statements that describe LAN
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Hub
A. physical layer b. DLL layer
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

30. What type of network cable is used between a terminal and a console port?
Is used by the server to resolve names.
Rollover cable
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Time-to-live (TTL)

31. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Rollover cable
Physical
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Wireless

32. 3 properties of peer-2-peer applications
OTDR
Network portion
Host A
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

33. 3 protocols that operate in the application layer
A. DNS b. SMTP c. POP
Wireless
Router(config)# interface FastEthernet 0/1
A. decentralized resources b. resource sharing w/o a dedicated server

34. What is the purpose of a default gateway?
A. minimizing of collisions b. division into broadcast domains
Identify the device that allows local network computers to communicate w/ devices in other networks.
FTP
A. next-hop b. metric/interface c. destination network address

35. What application layer protocol is used to support file transfers between client and server?
Fiber
TCP initializes the sequence numbers for the sessions.
FTP
255.255.255.224

36. 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.
Host mobility
A default gateway (router).
Minimal delays in data delivery.

37. What kind of problems are caused by excessive broadcast traffic on network segments?
To enable a receiving host to forward the data to the appropriate application.
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. copper UTP b. optical fiber
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

38. 3 factors that should be considered when implementing Layer 2 protocols
Physical
IP Protocol
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Time-to-live (TTL)

39. What do you need to use for an initial configuration on a Cisco router?
The magnetic field around the adjacent pairs of wire.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Console interface

40. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
To prevent the receiver from being overwhelmed by incoming data.
Window Size
The physical address is added.
A. decentralized resources b. resource sharing w/o a dedicated server

41. If you have a full-duplex operational network - what can happen?
The magnetic field around the adjacent pairs of wire.
Application Layer
To enable a receiving host to forward the data to the appropriate application.
No collisions will occur on this link.

42. 2 functions of encapsulation
To enable a receiving host to forward the data to the appropriate application.
A. decentralized resources b. resource sharing w/o a dedicated server
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
To facilitate the entry and exit of data on media.

43. What 2 type of cables would most commonly be used for new runs?
RJ-45
Network Access
A. Cat5 UTP b. Cat6 UTP
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

44. 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?
A. perform degradation b. security issues c. host identification
255.255.255.224
They must wait until the first hosts finish transfering the media.
A. replace a switch w/ a router b. subnet the new networks

45. What is a disadvantage of Telnet?
It does not support encryption.
Minimal delays in data delivery.
Twisting of the cables
8

46. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
Network Access
UTP
Twisting of the cables

47. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
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
Router(config)# interface FastEthernet 0/1
255.255.255.0

48. If there is a graphic representation of a company network wiring and equipment - What is this called?
Fiber
A physical topology.
A. HTTP b. HTTPS
DNS

49. What does the IEEE 802.2 standard represent in Ethernet technologies?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
They must wait until the first hosts finish transfering the media.
Logical Link Control sublayer
A. goodput b. throughput c. bandwidth

50. What is the primary function of encapsulating packets into frames?
A. Physical b. Data Link
Time-to-live (TTL)
To facilitate the entry and exit of data on media.
It reduces unnecessary broadcasts.