Networking Essentials -- Practice Final Exam
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Networking Essentials — Practice Final Exam
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Question 1 of 35
1. Question
What is the reason that electronic data is represented as bits in computer processing and data communication?Correct
Incorrect
In electronic communication, data is represented by 1’s and 0’s. These 1’s and 0’s are referred to as binary digits. This format is identified as digital binary. All electronic data is stored in this binary format because it can be stored more efficiently and can be transmitted over longer distances without the quality becoming degraded.Hint
In electronic communication, data is represented by 1’s and 0’s. These 1’s and 0’s are referred to as binary digits. This format is identified as digital binary. All electronic data is stored in this binary format because it can be stored more efficiently and can be transmitted over longer distances without the quality becoming degraded. -
Question 2 of 35
2. Question
Which term is used to describe a network device that relies on another device to obtain information?Correct
Incorrect
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.Hint
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. -
Question 3 of 35
3. Question
What is a role of an intermediary device on a network?Correct
Incorrect
Processes running on the intermediary network devices perform functions like regenerating and re-transmitting data signals, maintaining information about what pathways exist through the network and internetwork, directing data along alternate pathways when there is a link failure, and permitting or denying the flow of data, based on security settings.Hint
Processes running on the intermediary network devices perform functions like regenerating and re-transmitting data signals, maintaining information about what pathways exist through the network and internetwork, directing data along alternate pathways when there is a link failure, and permitting or denying the flow of data, based on security settings. -
Question 4 of 35
4. Question
Which type of network component can be used to share an attached printer to the network?Correct
Incorrect
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.Hint
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. -
Question 5 of 35
5. Question
Which two devices are shared peripherals? (Choose two.)Correct
Incorrect
A shared peripheral device does not connect directly to a network. This device is attached to a host (such as a PC) and the host connects to the network to share the peripheral device.Hint
A shared peripheral device does not connect directly to a network. This device is attached to a host (such as a PC) and the host connects to the network to share the peripheral device. -
Question 6 of 35
6. Question
When troubleshooting network problems, where would a network administrator find the configuration information, such as the computer names and the IP addresses that are used?Correct
Incorrect
A logical topology usually contains relevant network configuration information, such as the following:
- Device names
- Device IP addressing
- Network designations
- Configuration information
Hint
A logical topology usually contains relevant network configuration information, such as the following:
- Device names
- Device IP addressing
- Network designations
- Configuration information
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Question 7 of 35
7. Question
When is a straight-through cable used in a network?Correct
Incorrect
When two unlike devices are connected, they require a straight-through cable to exchange data. When two like devices are connected together, they require the use of a crossover cable in order to reverse the transmit and receive functions so they can exchange data.Hint
When two unlike devices are connected, they require a straight-through cable to exchange data. When two like devices are connected together, they require the use of a crossover cable in order to reverse the transmit and receive functions so they can exchange data. -
Question 8 of 35
8. Question
Which organization publishes and manages the Request for Comments (RFC) documents?Correct
Incorrect
The Internet Engineering Task Force (IETF) organization publishes and manages the Request for Comments (RFC).Hint
The Internet Engineering Task Force (IETF) organization publishes and manages the Request for Comments (RFC). -
Question 9 of 35
9. Question
What is indicated by the 100 in the 100BASE-T standard?Correct
Incorrect
100BASE-T is an Ethernet standard that translates to 100 megabits per second, baseband transmission, and twisted pair cable.Hint
100BASE-T is an Ethernet standard that translates to 100 megabits per second, baseband transmission, and twisted pair cable. -
Question 10 of 35
10. Question
What is the default subnet mask for an IP address of 198.133.219.4?Correct
Incorrect
In classful IPv4 addressing, a network with the first octet of 198 is a Class C network with the default subnet mask of 255.255.255.0.Hint
In classful IPv4 addressing, a network with the first octet of 198 is a Class C network with the default subnet mask of 255.255.255.0. -
Question 11 of 35
11. Question
What are three characteristics of multicast transmission? (Choose three.)Correct
Incorrect
Broadcast messages consist of single packets that are sent to all hosts on a network segment. These types of messages are used to request IPv4 addresses, and map upper layer addresses to lower layer addresses. A multicast transmission is a single packet sent to a group of hosts and is used by routing protocols, such as OSPF and RIPv2, to exchange routes. The address range 224.0.0.0 to 224.0.0.255 is reserved for link-local addresses to reach multicast groups on a local network.Hint
Broadcast messages consist of single packets that are sent to all hosts on a network segment. These types of messages are used to request IPv4 addresses, and map upper layer addresses to lower layer addresses. A multicast transmission is a single packet sent to a group of hosts and is used by routing protocols, such as OSPF and RIPv2, to exchange routes. The address range 224.0.0.0 to 224.0.0.255 is reserved for link-local addresses to reach multicast groups on a local network. -
Question 12 of 35
12. Question
A client device on an Ethernet segment needs an IP address in order to communicate on the network. A DHCP server with IP address 192.168.1.1 has been configured and enabled on the network. How will a client device obtain a usable IP address for this network?Correct
Incorrect
Like IP addressing, there is also a special MAC address for broadcast purposes: FF-FF-FF-FF-FF-FF. When a DHCP client needs to send a DHCP Discover message in order to seek DHCP servers, the client will use this MAC address as the destination MAC address in the Ethernet frame. It does this because it has no knowledge of the IP and MAC addresses of DHCP servers.Hint
Like IP addressing, there is also a special MAC address for broadcast purposes: FF-FF-FF-FF-FF-FF. When a DHCP client needs to send a DHCP Discover message in order to seek DHCP servers, the client will use this MAC address as the destination MAC address in the Ethernet frame. It does this because it has no knowledge of the IP and MAC addresses of DHCP servers. -
Question 13 of 35
13. Question
Which number grouping is a valid IPv6 address?Correct
Incorrect
An IPv6 address is made up of 128 bits represented in hexadecimal numbers.There are two rules that help reduce the number of digits needed to represent an IPv6 address.
- Rule 1 – Omit leading zeros in any 16-bit section.
- Rule 2 – Replace any single group of consecutive zeros with a double colon (::). This can only be used once within an IPv6 address.
Hint
An IPv6 address is made up of 128 bits represented in hexadecimal numbers.There are two rules that help reduce the number of digits needed to represent an IPv6 address.
- Rule 1 – Omit leading zeros in any 16-bit section.
- Rule 2 – Replace any single group of consecutive zeros with a double colon (::). This can only be used once within an IPv6 address.
-
Question 14 of 35
14. Question
Which protocol operates at the transport layer of the TCP/IP model and ensures reliable delivery of IP packets?Correct
Incorrect
Transmission Control Protocol (TCP) operates at the transport layer of the TCP/IP model. TCP ensures that IP packets are delivered reliably.Hint
Transmission Control Protocol (TCP) operates at the transport layer of the TCP/IP model. TCP ensures that IP packets are delivered reliably. -
Question 15 of 35
15. Question
Which term is used to describe transport layer ports in the range of 1 through 1023?Correct
Incorrect
Port numbers are addressed at the transport layer of the OSI model by TCP and UDP to identify requested protocols and services. Port numbers in the range of 1 to 1023 are well-known ports.Hint
Port numbers are addressed at the transport layer of the OSI model by TCP and UDP to identify requested protocols and services. Port numbers in the range of 1 to 1023 are well-known ports. -
Question 16 of 35
16. Question
What is a function of a DNS server?Correct
Incorrect
Hosts are assigned with IP addresses in order to communicate over the network. Hosts are registered with domain names so people can remember and recognize them easily. However, computers are connected through their IP addresses. DNS provides the service to map the domain name to its IP address.Hint
Hosts are assigned with IP addresses in order to communicate over the network. Hosts are registered with domain names so people can remember and recognize them easily. However, computers are connected through their IP addresses. DNS provides the service to map the domain name to its IP address. -
Question 17 of 35
17. Question
What are two benefits of wireless networks over wired networks? (Choose two.)
Correct
Incorrect
Benefits of wireless technology include the following:
- Mobility – easy device connectivity
- Flexibility – anytime, anywhere connectivity
- Scalability – easily expanded
- Cost savings – equipment costs continue to drop
- Quick installation – does not take long to install and provides connectivity for quite a range
- Reliability – even in harsh environments, wireless can be easy to install in emergency or hostile environments
Hint
Benefits of wireless technology include the following:
- Mobility – easy device connectivity
- Flexibility – anytime, anywhere connectivity
- Scalability – easily expanded
- Cost savings – equipment costs continue to drop
- Quick installation – does not take long to install and provides connectivity for quite a range
- Reliability – even in harsh environments, wireless can be easy to install in emergency or hostile environments
-
Question 18 of 35
18. Question
Which type of network is covered by the IEEE 802.11 standards?Correct
Incorrect
IEEE 802.11 wireless standards use the 2.4 and 5 GHz unregulated frequency ranges.Hint
IEEE 802.11 wireless standards use the 2.4 and 5 GHz unregulated frequency ranges. -
Question 19 of 35
19. Question
When a wireless router is being configured for the first time, what type of wired connection is used?Correct
Incorrect
A straight-through Ethernet cable, or patch cable, is commonly used to connect to a wireless router for initial configuration.Hint
A straight-through Ethernet cable, or patch cable, is commonly used to connect to a wireless router for initial configuration. -
Question 20 of 35
20. Question
Which is an example of social engineering?Correct
Incorrect
A social engineer attempts to gain the confidence of an employee and convince that person to divulge confidential and sensitive information, such as usernames and passwords. DDoS attacks, pop-ups, and viruses are all examples of software based security threats, not social engineering.Hint
A social engineer attempts to gain the confidence of an employee and convince that person to divulge confidential and sensitive information, such as usernames and passwords. DDoS attacks, pop-ups, and viruses are all examples of software based security threats, not social engineering. -
Question 21 of 35
21. Question
Which malicious program appears as a legitimate program to deceive the victim, but is in fact an attack tool that can contain malicious code?Correct
Incorrect
A Trojan horse is a malicious program that appears legitimate but actually carries code which can damage computer systems or install backdoors if the program is initiated.Hint
A Trojan horse is a malicious program that appears legitimate but actually carries code which can damage computer systems or install backdoors if the program is initiated.
-
Question 22 of 35
22. Question
A file is downloaded from the Internet. After the user opens the downloaded file, the hard drive crashes and all information on the computer is lost. What type of attack occurred?Correct
Incorrect
Viruses are malicious programs that are spread by modifying other programs and files and can cause hard drives to crash and files to be lost.Hint
Viruses are malicious programs that are spread by modifying other programs and files and can cause hard drives to crash and files to be lost. -
Question 23 of 35
23. Question
What is required for a network administrator to perform out-of-band management tasks on a Cisco device?Correct
Incorrect
With out-of-band management, the only requirement is to have a computer directly connected to the console port of the device. This is the primary method to configure a new device because no network connection or prior configurations on the device is required.Hint
With out-of-band management, the only requirement is to have a computer directly connected to the console port of the device. This is the primary method to configure a new device because no network connection or prior configurations on the device is required. -
Question 24 of 35
24. Question
What are two options for expanding storage space on a Cisco router? (Choose two.)Correct
Incorrect
ROM and RAM are memory modules built into a Cisco device and their capacity does not change. In a Cisco 1941 router, two flash slots and two USB ports are included that expand the storage capability and flexibility. NVRAM is a type of memory that is used to store a backup of the configuration file.Hint
ROM and RAM are memory modules built into a Cisco device and their capacity does not change. In a Cisco 1941 router, two flash slots and two USB ports are included that expand the storage capability and flexibility. NVRAM is a type of memory that is used to store a backup of the configuration file. -
Question 25 of 35
25. Question
If the default gateway is configured incorrectly on a host, what is the impact on communications?Correct
Incorrect
In data communication, the default gateway device is involved only when a host needs to communicate with other hosts on another network. The default gateway address identifies a network device that a host device uses to communicate with devices on other networks. The default gateway device is not used when a host communicates with other hosts on the same network.Hint
In data communication, the default gateway device is involved only when a host needs to communicate with other hosts on another network. The default gateway address identifies a network device that a host device uses to communicate with devices on other networks. The default gateway device is not used when a host communicates with other hosts on the same network. -
Question 26 of 35
26. Question
A user calls the help desk to report a workstation problem. Which three questions would produce the most helpful information for troubleshooting? (Choose three.)Correct
Incorrect
In troubleshooting, the first step is to gather information related to the problem. One way to gather information is to ask questions of the individual who reported the problem as well as any other affected users. Questions should include end user experiences, observed symptoms, error messages, and information about recent configuration changes to devices or applications.Hint
In troubleshooting, the first step is to gather information related to the problem. One way to gather information is to ask questions of the individual who reported the problem as well as any other affected users. Questions should include end user experiences, observed symptoms, error messages, and information about recent configuration changes to devices or applications. -
Question 27 of 35
27. Question
Which command can be used to verify connectivity between two host devices?Correct
Incorrect
The ping command can be used to test end-to-end connectivity between two host devices. It measures the round-trip time for a message to get from source to destination.Hint
The ping command can be used to test end-to-end connectivity between two host devices. It measures the round-trip time for a message to get from source to destination. -
Question 28 of 35
28. Question
Users are complaining that they are unable to browse certain websites on the Internet. An administrator can successfully ping a web server via its IP address, but cannot browse to the domain name of the website. Which troubleshooting tool would be most useful in determining where the problem is?Correct
Incorrect
The nslookup command can be used to look up information about a particular DNS name in the DNS server. The information includes the IP address of the DNS server being used as well as the IP address associated with the specified DNS name. This command can help verify the DNS that is used and if the domain name to IP address resolution works.Hint
The nslookup command can be used to look up information about a particular DNS name in the DNS server. The information includes the IP address of the DNS server being used as well as the IP address associated with the specified DNS name. This command can help verify the DNS that is used and if the domain name to IP address resolution works. -
Question 29 of 35
29. Question
Which utility can be used to view a list of open TCP connections on Linux or Windows systems?Correct
Incorrect
Netstat is a utility that is available for both Linux and Windows systems. It is a utility that can be used to indicate that something or someone is connected to the local host. It lists the protocol in use, the local address and port numbers, the foreign address and port numbers, and the state of the connection.Hint
Netstat is a utility that is available for both Linux and Windows systems. It is a utility that can be used to indicate that something or someone is connected to the local host. It lists the protocol in use, the local address and port numbers, the foreign address and port numbers, and the state of the connection. -
Question 30 of 35
30. Question
Refer to the exhibit. The command output is from a wireless DHCP host connected to a Linksys integrated router. What can be determined from the output?
Network Essentials Practice Final Exam Answers 001
Correct
Incorrect
The default gateway IP address must be in the same network as the host in order for the host and router to communicate with each other. Because this is a DHCP client, the IP configuration is provided by the DHCP. Thus the DHCP configuration should be checked and corrected.Hint
The default gateway IP address must be in the same network as the host in order for the host and router to communicate with each other. Because this is a DHCP client, the IP configuration is provided by the DHCP. Thus the DHCP configuration should be checked and corrected. -
Question 31 of 35
31. Question
Fill in the blank.
When a Cisco device is powered on, the ………………………. begins to test the device and determine if it is functioning properly.Correct
Incorrect
-
Question 32 of 35
32. Question
Match the protocol with the function. (Not all options are used.)
Sort elements
- automatically configures hosts with IP addresses
- provides remote access to servers
- retrieves email messages by clients
- resolves Interent names to IP addresses
-
DHCP
-
SSH
-
DNS
Correct
Incorrect
-
Question 33 of 35
33. Question
Match the term to the category.
Sort elements
- EAP
- open
- pre-shared keys
- WEP
- WPA
-
Authentication
-
Authentication
-
Authentication
-
Encryption
-
Encryption
Correct
Incorrect
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Question 34 of 35
34. Question
Match the type of attack with the description. (Not all options are used.)
Sort elements
- The attacker gathers personal information from a computer without permission.
- The attacker uses voice mail to persuade a victim to call a legitimate looking telephone number.
- The attacker uses invented scenarios to gain the trust of victim.
- The attacker pretends to represent a legitimate outside organization.
-
vishing
-
pretexting
-
phishing
Correct
Incorrect
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Question 35 of 35
35. Question
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What is the phrase displayed on the webpage?
Correct
Incorrect