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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. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
IP is not properly installed
Router(config)# hostname Costas
Fiber
Source and Destination Ports

2. To make a console connection from a comp to a Cisco router - what cable should be used?
They must wait until the first hosts finish transfering the media.
Rollover cable
Switch
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

3. 3 terms that define the forms of help available within the Cisco IOS
Any device whose backoff timer expires first.
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. hot keys b. context-sensitive c. command syntax check

4. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Show Interfaces
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Network Layer Packet
0 to 1023

5. What is an automated service that matches resource names w/ required IP addresses?
DNS
A. hot keys b. context-sensitive c. command syntax check
A. DB 60 b. Winchester 15-pin c. smart serial
A. perform degradation b. security issues c. host identification

6. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
0 to 1023
A. perform degradation b. security issues c. host identification
Source and Destination IP address

7. 2 functions of encapsulation
A. perform degradation b. security issues c. host identification
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
Flash
A. application b. presentation c. session d. transmision e. network f. data link g. physical

8. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
A. servers b. routers c. network printers
A. identifies the communicating applications b. identifies multiple conversations between the hosts
OTDR

9. Why are port numbers included in the TCP header of a segment?
Originate data flow.
UTP
To enable a receiving host to forward the data to the appropriate application.
To facilitate the entry and exit of data on media.

10. What is the purpose of a default gateway?
Identify the device that allows local network computers to communicate w/ devices in other networks.
The physical address is added.
80 (HTTP)
SSH

11. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Show Interfaces
Network address
Router(config)# hostname Costas

12. What can get you to an outside network?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
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 default gateway (router).
Ctrl + Shift + 6

13. What is a protocol that provides connectionless network layer services?
Collisions can decrease network performance.
IP Protocol
Router(config)# interface FastEthernet 0/1
A. flow control b. session establishment c. numbering and sequencing

14. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
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
It reduces unnecessary broadcasts.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long

15. 3 characteristics of valid Ethernet Layer 2 addresses
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Physical
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Source and Destination IP address

16. Which OSI layer is responsible for binary transmission - cable specification - and physical aspects of network communication?
Physical
It has expanded adressing capabilities.
A. perform degradation b. security issues c. host identification
Originate data flow.

17. What are 2 forms of application layer software?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
It provides for the exchange of data over a common local media.
A. application b. services
A. MTA b. SMTP

18. Which portion of the network layer address does a router use to forward packets?
Network portion
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
When connecting a host to a switch.
A. they initiate data exchanges b. they may upload data to servers

19. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Network address
Router(config)# interface FastEthernet 0/1
A. application b. services
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

20. 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. the router will discard the packet b. the router will send a time exceeded message to the source host
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Rollover cable

21. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
To enable a receiving host to forward the data to the appropriate application.
Time-to-live (TTL)
Network address

22. What command is used to change the default name to 'Costas'?
Wireless
Router(config)# hostname Costas
32 bits
A. goodput b. throughput c. bandwidth

23. What event occurs during the 3-way handshake?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. next-hop b. metric/interface c. destination network address
To facilitate the entry and exit of data on media.
TCP initializes the sequence numbers for the sessions.

24. What is the purpose of resource records in DNS?
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
Rollover cable
Is used by the server to resolve names.
Console interface

25. 2 features that make switches preferable to hubs
UTP
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. minimizing of collisions b. division into broadcast domains
Wireless

26. When do changes take effect in a Cisco router?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. DNS b. SMTP c. POP
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
As the commands are entered.

27. What is the primary purpose of Layer 4?
Wireless
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Identify processes or services that are communicating with end devices.

28. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
Source Port
RJ-45
A. Physical b. Data Link
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

29. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
A physical topology.
Is used by the server to resolve names.
Switch
Originate data flow.

30. statements of IP adressing
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
2046
A. Cat5 UTP b. Cat6 UTP
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

31. What is the role of MTA in handling email?
Network Layer
0 to 1023
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. low overhead b. connectionless

32. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
A. Physical b. Data Link
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. it has centralized administration b. security is easier to enforce

33. In business LANs - which connector is used w/ twisted-pair networking cable?
Destination Network Address
A. next-hop b. metric/interface c. destination network address
RJ-45
A. hot keys b. context-sensitive c. command syntax check

34. What application layer protocol is used to support file transfers between client and server?
FTP
2046
Network Media Control
A default gateway (router).

35. What is the function of the DLL?
It provides for the exchange of data over a common local media.
172.16.192.160
Binary ANDing
8

36. How does the application layer on a server process multiple client requests for services?
A. flow control b. session establishment c. numbering and sequencing
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. goodput b. throughput c. bandwidth
It uses support from the lower layers to distinguish between connections to the service.

37. What is an effect of improperly applying a network cable connector?
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
Signal loss can be experienced.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Destination is not contacted before a packet is sent.

38. What info is found in the TCP and UDP header info?
The physical address is added.
Console interface
Source and Destination Ports
The destination host address.

39. 3 features that allow TCP to realibly and accurately track the transmission of data
A. flow control b. session establishment c. numbering and sequencing
Is a layer of specific encapsulation.
A. copper UTP b. optical fiber
Router(config)# hostname Costas

40. 2 most commonly used media types in ethernet networks
A. copper UTP b. optical fiber
Rollover cable
A. Physical b. Data Link
Network Layer Packet

41. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
Static
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

42. If you have a full-duplex operational network - what can happen?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
No collisions will occur on this link.
Network Layer Packet
The physical address is added.

43. Why is flow control used for TCP data transfer?
To prevent the receiver from being overwhelmed by incoming data.
0 to 1023
A. purpose b. geographic location c. ownership
RJ-45

44. Network Protocols
A. addressing b. error detection c. frame delimiting
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. purpose b. geographic location c. ownership
32 bits

45. What 2 type of cables would most commonly be used for new runs?
A. minimizing of collisions b. division into broadcast domains
Show Interfaces
A. Cat5 UTP b. Cat6 UTP
Binary ANDing

46. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Rollover cable
FTP
80 (HTTP)
IP is not properly installed

47. How many bits make up an IPv4 address?
Resolve IPv4 addresses to MAC addresses.
TCP initializes the sequence numbers for the sessions.
A. application b. services
32 bits

48. An admin needs to keep contents private - which access method should he use?
Twisting of the cables
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Flash
SSH

49. 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?
172.16.192.160
It uses lasers as the light source.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Wireless

50. During encapsulation - what happens in the Data Link Layer?
The physical address is added.
Network address
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
To prevent the receiver from being overwhelmed by incoming data.

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CCNA - 2

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