Modules 1 – 3: Basic Network Connectivity and Communications Exam Answers

Modules 1 – 3: Basic Network Connectivity and Communications Exam Full
1. What process is used to receive transmitted data and convert it into a readable message?

• access control
• decoding
• encapsulation
• flow control

2. What is done to an IP packet before it is transmitted over the physical medium?

• It is tagged with information guaranteeing reliable delivery.
• It is segmented into smaller individual pieces.
• It is encapsulated into a TCP segment.
• It is encapsulated in a Layer 2 frame.

3. What process is used to place one message inside another message for transfer from the source to the destination?

• access control
• decoding
• encapsulation
• flow control

4. A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission?

• HTTP, IP, TCP, Ethernet
• HTTP, TCP, IP, Ethernet
• Ethernet, TCP, IP, HTTP
• Ethernet, IP, TCP, HTTP

5. In which scenario would the use of a WISP be recommended?

• an Internet cafe in a city
• a farm in a rural area without wired broadband access
• any home with multiple wireless devices
• an apartment in a building with cable access to the Internet

6. What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?

• reliability
• scalability
• quality of service
• accessibility

7. A college is building a new dormitory on its campus. Workers are digging in the ground to install a new water pipe for the dormitory. A worker accidentally damages a fiber optic cable that connects two of the existing dormitories to the campus data center. Although the cable has been cut, students in the dormitories only experience a very short interruption of network services. What characteristic of the network is shown here?

• quality of service (QoS)
• scalability
• security
• fault tolerance
• integrity

8. What are two characteristics of a scalable network? (Choose two.)

• easily overloaded with increased traffic
• grows in size without impacting existing users
• is not as reliable as a small network
• suitable for modular devices that allow for expansion
• offers limited number of applications

9. Which device performs the function of determining the path that messages should take through internetworks?

• a router
• a firewall
• a web server
• a DSL modem

10. Which two Internet connection options do not require that physical cables be run to the building? (Choose two.)

• DSL
• cellular
• satellite
• dialup
• dedicated leased line

11. What type of network must a home user access in order to do online shopping?

• an intranet
• the Internet
• an extranet
• a local area network

12. How does BYOD change the way in which businesses implement networks?​

• BYOD requires organizations to purchase laptops rather than desktops.
• BYOD users are responsible for their own network security, thus reducing the need for organizational security policies.
• BYOD devices are more expensive than devices that are purchased by an organization.
• BYOD provides flexibility in where and how users can access network resources.

13. An employee wants to access the network of the organization remotely, in the safest possible way. What network feature would allow an employee to gain secure remote access to a company network?

• ACL
• IPS
• VPN
• BYOD

14. What is the Internet?

• It is a network based on Ethernet technology.
• It provides network access for mobile devices.
• It provides connections through interconnected global networks.
• It is a private network for an organization with LAN and WAN connections.

15. What are two functions of end devices on a network? (Choose two.)

• They originate the data that flows through the network.
• They direct data over alternate paths in the event of link failures.
• They filter the flow of data to enhance security.
• They are the interface between humans and the communication network.
• They provide the channel over which the network message travels.

16. Which statement is true about the running configuration file in a Cisco IOS device?

• It affects the operation of the device immediately when modified.
• It is stored in NVRAM.
• It should be deleted using the erase running-config command.
• It is automatically saved when the router reboots.

17. Which two statements are true regarding the user EXEC mode? (Choose two.)

• All router commands are available.
• Global configuration mode can be accessed by entering the enable command.
• The device prompt for this mode ends with the “>” symbol.
• Interfaces and routing protocols can be configured.
• Only some aspects of the router configuration can be viewed.

18. Which type of access is secured on a Cisco router or switch with the enable secret command?

• virtual terminal
• privileged EXEC
• AUX port
• console line

19. What is the default SVI on a Cisco switch?

• VLAN1
• VLAN99
• VLAN100
• VLAN999

20. When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.)

• the hostname should be fewer than 64 characters in length
• the hostname should be written in all lower case characters
• the hostname should contain no spaces
• the hostname should end with a special character
• the hostname should begin with a letter

21. What is the function of the shell in an OS?

• It interacts with the device hardware.
• It interfaces between the users and the kernel.
• It provides dedicated firewall services.
• It provides the intrusion protection services for the device.

22. A router with a valid operating system contains a configuration file stored in NVRAM. The configuration file has an enable secret password but no console password. When the router boots up, which mode will display?

• global configuration mode
• setup mode
• privileged EXEC mode
• user EXEC mode

23. An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device?

• Copy the running configuration to the startup configuration file.
• Copy the information in the startup configuration file to the running configuration.
• Reload the device and type yes when prompted to save the configuration.
• Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed.

24. Which memory location on a Cisco router or switch will lose all content when the device is restarted?

• ROM
• flash
• NVRAM
• RAM

25. Why would a technician enter the command copy startup-config running-config?

• to remove all configurations from the switch
• to save an active configuration to NVRAM
• to copy an existing configuration into RAM
• to make a changed configuration the new startup configuration

26. Which functionality is provided by DHCP?

• automatic assignment of an IP address to each host
• remote switch management
• translation of IP addresses to domain names
• end-to-end connectivity test

27. Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.)

• providing an error message when a wrong command is submitted
• displaying a list of all available commands within the current mode
• allowing the user to complete the remainder of an abbreviated command with the TAB key
• determining which option, keyword, or argument is available for the entered command
• selecting the best command to accomplish a task

28. Which memory location on a Cisco router or switch stores the startup configuration file?

• RAM
• ROM
• NVRAM
• flash

29. To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used?

• 10.1.0.0
• 10.0.0.0
• 10.1.100.32
• 10.1.100.0

30. Which three acronyms/initialisms represent standards organizations? (Choose three.)

• IANA
• TCP/IP
• IEEE
• IETF
• OSI
• MAC

31. What type of communication will send a message to all devices on a local area network?

• broadcast
• multicast
• unicast
• allcast

32. In computer communication, what is the purpose of message encoding?

• to convert information to the appropriate form for transmission
• to interpret information
• to break large messages into smaller frames
• to negotiate correct timing for successful communication

33. Which message delivery option is used when all devices need to receive the same message simultaneously?

• duplex
• unicast
• multicast
• broadcast

34. What are two benefits of using a layered network model? (Choose two.)

• It assists in protocol design.
• It speeds up packet delivery.
• It prevents designers from creating their own model.
• It prevents technology in one layer from affecting other layers.
• It ensures a device at one layer can function at the next higher layer.

35. What is the purpose of protocols in data communications?

• specifying the bandwidth of the channel or medium for each type of communication
• specifying the device operating systems that will support the communication
• providing the rules required for a specific type of communication to occur
• dictating the content of the message sent during communication

36. Which logical address is used for delivery of data to a remote network?

• destination MAC address
• destination IP address
• destination port number
• source MAC address
• source IP address

37. What is the general term that is used to describe a piece of data at any layer of a networking model?

• frame
• packet
• protocol data unit
• segment

38. Which two protocols function at the internet layer? (Choose two.)

• POP
• BOOTP
• ICMP
• IP
• PPP

39. Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?

• application
• presentation
• session
• transport
• network

40. Which type of communication will send a message to a group of host destinations simultaneously?

• broadcast
• multicast
• unicast
• anycast