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. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. HTTP b. HTTPS
Rollover cable
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A physical topology.

2. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
8
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 physical topology.
Physical

3. What is the purpose of a default gateway?
Application Layer
It provides interface between applications on either end of the network.
Minimal delays in data delivery.
Identify the device that allows local network computers to communicate w/ devices in other networks.

4. What can get you to an outside network?
A default gateway (router).
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
The magnetic field around the adjacent pairs of wire.

5. Which type of cable is most often associated w/ fiber-optic cable?
A. servers b. routers c. network printers
A backbone cable.
32 bits
Rollover cable

6. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
IP is not properly installed
A random delay helps prevent the stations from experiencing another collision during transmission.
FTP

7. What info is found in the TCP and UDP header info?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
It provides for the exchange of data over a common local media.
Source and Destination Ports

8. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Resolve IPv4 addresses to MAC addresses.
Network address
80 (HTTP)
Switch

9. 3 primary functions of the data link layer encapsulation
Physical
A. addressing b. error detection c. frame delimiting
To enable a receiving host to forward the data to the appropriate application.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

10. What do you need to use for an initial configuration on a Cisco router?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Fiber
Console interface
Destination Network Address

11. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
Any device whose backoff timer expires first.
80 (HTTP)
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

12. statements of IP adressing
A physical topology.
A. non-deterministic b. less overhead c. collisions exist
A. show startup-config b. show running-config
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

13. 3 common problems w/ a large network
A. performance degradation b. security issues c. host identification
A. flow control b. session establishment c. numbering and sequencing
SMB
The MAC protocol can be very simple.

14. What can you identify when you examine the Network Layer header?
To enable a receiving host to forward the data to the appropriate application.
The destination host address.
Next-Hop Address
A. MTA b. SMTP

15. What are 2 protocols for transfering web resources?
A. it has centralized administration b. security is easier to enforce
A. HTTP b. HTTPS
A. replace a switch w/ a router b. subnet the new networks
A. non-deterministic b. less overhead c. collisions exist

16. What are 3 properties of contention-based media access for a shared media?
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. non-deterministic b. less overhead c. collisions exist
A. servers b. routers c. network printers
Any device whose backoff timer expires first.

17. What is the primary rope of the physical layer in transmitting data?
IP is not properly installed
Application Layer
Create signals that represent the bits in each frame for the media.
A. Cat5 UTP b. Cat6 UTP

18. Why is flow control used for TCP data transfer?
A. flow control b. session establishment c. numbering and sequencing
IP Protocol
It does not support encryption.
To prevent the receiver from being overwhelmed by incoming data.

19. Which device is used to create or divide broadcast domains?
Router
A. netstat -r b. route PRINT
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
Ctrl + Shift + 6

20. In business LANs - which connector is used w/ twisted-pair networking cable?
As the commands are entered.
RJ-45
A. perform degradation b. security issues c. host identification
Supports error detection.

21. Default Gateway is incorrect on the host - What is the impact on the communications?
TCP initializes the sequence numbers for the sessions.
Destination Network Address
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

22. What are 2 commands used to view a host routing table?
OTDR
Console
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. netstat -r b. route PRINT

23. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Originate data flow.
Router(config)# interface FastEthernet 0/1
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

24. After an ethernet collision - which device has priority to transmit data?
Show Interfaces
Any device whose backoff timer expires first.
A. HTTP b. HTTPS
They must wait until the first hosts finish transfering the media.

25. During encapsulation - what happens in the Data Link Layer?
UDP
The physical address is added.
Collisions can decrease network performance.
MAC

26. What event occurs during the 3-way handshake?
Static
TCP initializes the sequence numbers for the sessions.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Rollover cable

27. What is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. Physical b. Data Link
The magnetic field around the adjacent pairs of wire.

28. 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
Network Access
A. DNS b. SMTP c. POP
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

29. What is the purpose of resource records in DNS?
The address of the router that the host will use to 'get to the other side'.
Is used by the server to resolve names.
MAC
Logical Link Control sublayer

30. What is the role of the OSI Application Layer?
A random delay helps prevent the stations from experiencing another collision during transmission.
Application Layer
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
It provides interface between applications on either end of the network.

31. What kind of problems are caused by excessive broadcast traffic on network segments?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
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. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host A

32. Intermediary devices used to implement security between networks
A. router b. firewall
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. it has centralized administration b. security is easier to enforce
To prevent the receiver from being overwhelmed by incoming data.

33. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
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
IP is not properly installed
172.16.192.160

34. What causes crosstalk within cable pairs when using UTP?
172.16.192.160
The magnetic field around the adjacent pairs of wire.
Ctrl + Shift + 6
To facilitate the entry and exit of data on media.

35. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Hosts return to listen-before-transmit mode.
A. show startup-config b. show running-config
It provides interface between applications on either end of the network.

36. What is a protocol that provides connectionless network layer services?
UTP
A. enable mode b. priviledge executive mode
Network
IP Protocol

37. Where is the IOS file stored at?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. Cat5 UTP b. Cat6 UTP
A default gateway (router).
Flash

38. 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
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
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
Source and Destination Ports

39. What do end devices do?
Transport
Originate data flow.
RJ-45
It uses lasers as the light source.

40. How many bits make up an IPv4 address?
172.16.192.160
32 bits
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Router(config)# interface FastEthernet 0/1

41. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
Show Interfaces
UTP
Supports error detection.
A. the router will discard the packet b. the router will send a time exceeded message to the source host

42. What describes the purpose of default route?
DNS
To facilitate the entry and exit of data on media.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
It uses lasers as the light source.

43. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
Physical
UDP
Resolve IPv4 addresses to MAC addresses.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected

44. 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?
Any device whose backoff timer expires first.
A. show startup-config b. show running-config
2046
Create signals that represent the bits in each frame for the media.

45. What statements describe the logical token-passing topology?
Rollover cable
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
RJ-45
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

46. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
A. performance degradation b. security issues c. host identification
Show Interfaces
FTP

47. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A backbone cable.
It uses lasers as the light source.
It provides interface between applications on either end of the network.

48. What device can check for faults - integrity and performance of media?
The address of the router that the host will use to 'get to the other side'.
OTDR
TCP initializes the sequence numbers for the sessions.
A. media sharing b. logical topology

49. What do the intermediary devices in the network do?
A. application b. services
Fiber
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
TCP initializes the sequence numbers for the sessions.

50. 3 features of IPv6
It has expanded adressing capabilities.
A. copper UTP b. optical fiber
A. larger address space b. data types and classes of service c. authentication and encryption
When connecting a host to a switch.