Networking Essentials (Version 2) – Modules 1 – 4: Internet Connection: Getting Online Group Exam

 

Module Group 1: Modules 1 – 4 Group Exam Answers

Networking Essentials (Version 2) – Modules 1 – 4: Internet Connection: Getting Online Group Exam Answers

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1. Match the term to the value represented.

Networking Essentials (Version 2) – Modules 1 – 4: Internet Connection: Getting Online Group Exam

2. What is a disadvantage of deploying a peer-to-peer network model?

• lack of centralized administration
• high degree of complexity
• high cost
• difficulty of setup

Explanation: The simplest peer-to-peer network consists of two computers that are directly connected to each other through the use of a wired or wireless connection. The primary disadvantages of a peer-to-peer network are its lack of central administration, minimal security, and its lack of scalability.

3. Which factor classifies a host as a server?

• the CPU speed
• the software installed
• the network connection
• the amount of memory

Explanation: A server is a host with server software installed. Although CPU, memory, and the network connection will determine the performance of a server, it is the server software that provides desired server services.

4. Which term is used to describe a network device that relies on another device to obtain information?

• console
• client
• web server
• server

Explanation: A client device has software installed which enables it to request the required service from a server device. For instance, a user who uses a web browser is effectively requesting pages from servers all over the web. In this case the browser is considered the client, whereas the device that is responsible for answering the request is considered the server.

5. How many unique values are possible using a single binary digit?

• 9
• 4
• 1
• 8
• 16
• 2

Explanation: A bit is stored and transmitted as one of two possible discrete states. Each bit can only have one of two possible values, 0 or 1. The term bit is an abbreviation of “binary digit” and represents the smallest piece of data.

6. Which network device is used to translate a domain name to the associated IP address?

• router
• DHCP server
• DNS server
• default gateway

Explanation: A DNS server is a network device that is used to translate a domain name to its IP address. A user will identify a website using a domain name, such as www.cisco.com and a DNS server will translate it to an associated IP address.

7. A consumer places a smartphone close to a pay terminal at a store and the shopping charge is successfully paid. Which type of wireless technology was used?

• Bluetooth
• NFC
• Wi-Fi
• 3G

Explanation: NFC is a wireless technology that allows data to be exchanged between devices that are in very close proximity to each other.

8. A wireless network was recently installed in a coffee shop and customer mobile devices are not receiving network configuration information. What should be done to correct the problem?

• Check the connection of the DNS server to the Internet.
• Provide peripheral devices to customers.
• Make sure the DHCP server is functional.
• Ensure that the default gateway device is working properly.

Explanation: End-user devices can request an address from a pool of addresses that are maintained by a DHCP server.

9. A user is looking for a wireless headphone for listening to songs stored on a smartphone. What wireless technology would the headphone use?

• 3G/4G
• Wi-Fi
• infrared
• Bluetooth

Explanation: Bluetooth is a wireless technology for data exchange over a short distance. It is suitable for connecting devices with simple tasks, such as headsets, keyboards, mice, and printers. Wi-Fi is suitable for variety of applications with high speed wireless connectivity required or preferred. Infrared requires a direct line of sight between the transmitter and the receiver. 3G/4G are cellular network technologies to manage voice calls and data transmission between clients and service providers.

10. If you were drawing a physical topology of your school network, what type of information would you include?

• how devices are connected
• the location of devices in the building
• the path that data takes to reach destinations
• the IP addresses of all devices on the network

Explanation: A physical topology is a diagram that shows where all the devices are physically located in the building.

11. Refer to the exhibit. A student is creating a wired and wireless network in Packet Tracer. After inserting a router, switch, and PC, the student chooses a straight-through cable to connect the PC to the switch. Which connection would be the best port for the student to choose on the PC?

• RS 232
• USB0
• USB1
• FastEthernet0

Explanation: A PC to switch connection is through an Ethernet cable. Connect FastEthernet0 on the PC to any Ethernet port on the switch.

12. Refer to the exhibit. An instructor wants to show a few prebuilt Packet Tracer sample labs in class. Which menu option would the instructor use to access a sample lab?

• File
• Edit
• Options
• View
• Tools
• Extensions

Explanation: Use the File > Open Samples menu option to browse for the samples provided with Packet Tracer.

13. Refer to the exhibit. A home wireless network is being configured within Packet Tracer. The user adds a wireless router, a PC, and three laptops. The user is reviewing the wireless connection on one of the laptops. What can be determined?

• The laptop must have a different wireless NIC installed before being able to connect to the wireless router.
• All three laptops are connected to the wireless network successfully.
• The laptop is connected to a wireless network.
• Because the password is not enabled, the laptop cannot connect to the wireless router.

Explanation: A home wireless router could be configured for a 2.4 GHz and multiple 5 GHz wireless networks, each with a unique SSID such as QuizMe3, QuizMe2, and QuizMe. The wireless NIC is active and connected to a wireless network as indicated by the words Adapter is Active. The wireless router has not been configured with wireless security.

14. When authenticating within Packet Tracer, which two items could you use? (Choose two.)

• a username associated with a specific school
• an email address found in the NetAcad profile
• a username associated with NetAcad
• a previously configured pattern
• a previously configured PIN

Explanation: When Packet Tracer first opens, an authentication screen appears. Use the email address in the NetAcad profile or a username associated with NetAcad.

15. Refer to the exhibit. Which menu item would be used to bring up a command prompt environment to be able to ping another network device?

• Physical
• Config
• Desktop
• Programming
• Attributes

Explanation: The Desktop menu item is used to access common applications and windows used to configure a device such as the IP address, command prompt, web browser, as well as other apps.

16. What are two advantages of using fiber-optic cabling to interconnect devices? (Choose two.)

• Fiber-optic cable is immune from EMI and RFI.
• Fiber-optic cables are commonly found in both homes and small businesses.
• Fiber-optic cables can extend several miles.
• Fiber-optic cables are easy to install..
• Fiber-optic cables use extra shielding to protect copper wires.

Explanation: Fiber-optic cables provide immunity to both EMI and RFI and a single cable can extend for several miles before regeneration is needed.

17. Which type of network cable is commonly used to connect office computers to the local network?

• coaxial cable
• glass fiber-optic cable
• twisted-pair cable
• plastic fiber-optic cable

Explanation: Twisted-pair is a type of copper cable used to interconnect devices on a local network.

18. Which statement describes the use of the ping command?

• The ping command can be used to determine the exact location of the problem when troubleshooting reachability issues.
• The ping command can be used to test reachability using the physical address of the device.
• The ping command tests end-to-end connectivity between two devices.
• The ping command shows current Layer 4 sessions.

Explanation: The ping command is used to test end-to-end connectivity between the source and destination IP address. It measures the time it takes a test message to make a round trip between the two end points. However, if the message does not reach the destination, or in the case of delays, there is no way to determine where the problem is located.

19. Which type of network cable is used to connect the components that make up satellite communication systems?

• fiber-optic
• coaxial
• unshielded twisted-pair
• shielded twisted-pair

Explanation: Coaxial cable is commonly used to connect the various components that make up satellite communication systems and cable TV.

20. What are two sources of electromagnetic interference that can affect data transmissions? (Choose two.)

• infrared remote control
• LED monitor
• cordless phone
• florescent light fixture
• microwave oven

Explanation: Electromagnetic interference or EMI is commonly caused by equipment such as microwave ovens and fluorescent light fixtures.

21. What terms represent the maximum and actual speed that can be utilized by a device to transfer data?

• throughput; bandwidth
• bandwidth; throughput
• throughput; goodput
• bandwidth; goodput

Explanation: Bandwidth measures the maximum rate at which a device can transfer data. However, in practice, the actual speed for data transfer could be reduced because of numerous factors like network congestion, overhead etc. This actual rate of transfer is known as throughput.

22. Which type of network component can be used to share an attached printer to the network?

• peripheral
• access point
• personal computer
• network media

Explanation: A peripheral is a device that is not directly connected to a network. In order to be made available on a network, a host is responsible for sharing the peripheral across the network.

23. Refer to the exhibit. A student has started a Packet Tracer network that includes a home wireless router to be used for both wired and wireless devices. The router and laptop have been placed within the logical workspace. The student clicks on the laptop and the window that opens is shown in the exhibit. What is the purpose of the modules on the left?

• These are modules that can be used by double-clicking on one module so that it automatically installs into the laptop.
• This is the list of modules currently installed in the laptop.
• These are optional modules that can be installed into the module slot if it is currently empty.
• This is a list of modules available from the manufacturer that can be clicked on and “purchased.”

Explanation: Modules on the left can be installed into the shown device, in this case a laptop. Be sure to power the device off before installing any option.

24. Which criterion can be used to select the appropriate type of network media for a network?

• the types of data that need to be prioritized
• the number of intermediary devices that are installed in the network
• the cost of the end devices that are used in the network
• the environment where the selected medium is to be installed

Explanation: Criteria for choosing a network medium are the distance across which the selected medium can successfully carry a signal, the environment in which the selected medium is to be installed, the amount of data and the speed at which the data must be transmitted, and the cost of the medium and its installation.