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CCNA 1 v7.0 Final Exam Answers Full - Introduction to Networks
Emporia State University
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Number of questions: 60; Passed score: 80-100%
1. Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.)
video web file transfer voice peer to peer
2. Which wireless technology has low-power and data rate requirements making it popular in home automation applications?
ZigBee LoRaWAN 5G Wi-Fi
3. Which layer of the TCP/IP model provides a route to forward messages through an internetwork?
application network access internet transport
Explain: The OSI model network layer corresponds directly to the internet layer of the TCP/IP model and is used to describe protocols that address and route messages through an internetwork.
4. Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services?
DNS email file web
Explain: A DNS server stores records that are used to resolve IP addresses to host names. Some DNS record types include the following: A – an end device IPv4 address NS – an authoritative name server AAAA – an end device IPv6 address MX – a mail exchange record
5. What are proprietary protocols?
protocols developed by private organizations to operate on any vendor hardware protocols that can be freely used by any organization or vendor
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point-to-point peer-to-peer (P2P)
Explanation: Peer-to-peer (P2P) networks have two or more network devices that can share resources such as printers or files without having a dedicated server.
10. What characteristic describes a virus?
a network device that filters access and traffic coming into a network the use of stolen credentials to access private data an attack that slows or crashes a device or network service malicious software or code running on an end device
11. Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
financial transactions, web page, audio conference audio conference, financial transactions, web page financial transactions, audio conference, web page audio conference, web page, financial transactions
Explanation: QoS mechanisms enable the establishment of queue management strategies that enforce priorities for different categories of application data. Thus, this queuing enables voice data to have priority over transaction data, which has priority over web data.
12. Match the description to the IPv6 addressing component. (Not all options are used.)
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Explanation: A store-and-forward switch always stores the entire frame before forwarding, and checks its CRC and frame length. A cut-through switch can forward frames before receiving the destination address field, thus presenting less latency than a store-and-forward switch. Because the frame can begin to be forwarded before it is completely received, the switch may transmit a corrupt or runt frame. All forwarding methods require a Layer 2 switch to forward broadcast frames.
15. Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?
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R1: S0/0/
R2: S0/0/
R1: G0/
R2: S0/0/
Explanation: The default gateway for host H1 is the router interface that is attached to the LAN that H1 is a member of. In this case, that is the G0/ interface of R1. H1 should be configured with the IP address of that interface in its addressing settings. R1 will provide routing services to packets from H that need to be forwarded to remote networks.
16. What service is provided by Internet Messenger?
An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Resolves domain names, such as cisco, into IP addresses. Uses encryption to provide secure remote access to network devices and servers.
17. Refer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network.
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Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)
crosstalk extended length of cabling RFI EMI signal attenuation
20. A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its ARP cache. How will the device obtain a destination MAC address? A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the ARP cache. How will the device obtain a destination MAC address?
It will send the frame and use its own MAC address as the destination. It will send an ARP request for the MAC address of the destination device. It will send the frame with a broadcast MAC address. It will send a request to the DNS server for the destination MAC address. It will send an ARP request for the MAC address of the default gateway.
21. Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper enables IPv4 and IPv6 to utilize the same physical medium handles communication between upper layer networking software and Ethernet NIC hardware adds Ethernet control information to network protocol data implements CSMA/CD over legacy shared half-duplex media
22. A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?
DNS NetBIOS (NetBT) POP IMAP
23. A network administrator is adding a new LAN to a branch office. The new LAN must support 25 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255. 255.255. 255.255. 255.255.
24. What characteristic describes a Trojan horse?
-70% -19% -64% -64%
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Explanation: Network A needs to use 192.168.0 /25 which yields 128 host addresses. Network B needs to use 192.168.0 /26 which yields 64 host addresses. Network C needs to use 192.168.0 /27 which yields 32 host addresses. Network D needs to use 192.168.0 /30 which yields 4 host addresses.
29. What characteristic describes a DoS attack?
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properly no matter what device is being used to view the web site.
Explain: The source and destination port numbers are used to identify the correct application and window within that application.
33 to the exhibit. Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?
Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16. Layer 3 source address = 172.16.
Layer 2 destination address = 00-00-0c-94-36-dd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16. Layer 3 source address = 172.16.
Layer 2 destination address = 00-00-0c-94-36-cd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16. Layer 3 source address = 172.16.
Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16. Layer 3 source address = 172.16.
34. What does the term “attenuation” mean in data communication?
strengthening of a signal by a networking device leakage of signals from one cable pair to another
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time for a signal to reach its destination loss of signal strength as distance increases
35. Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
The entire command, configure terminal, must be used. The administrator is already in global configuration mode. The administrator must first enter privileged EXEC mode before issuing the command. The administrator must connect via the console port to access global configuration mode.
36. Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.)
TCP IP UDP POP DNS Ethernet
37. A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read- Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework?
automation accounting authentication authorization
After a user is successfully authenticated (logged into the server), the authorization is the process of determining what network resources the user can access and what operations (such as read or edit) the user can perform.
38. What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)
message size message encoding connector specifications media selection delivery options end-device installation
39. What are two characteristics of IP? (Choose two.)
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192.168.1/
192.168.1/
192.168.1/
192.168.1/
Explanation: For the subnet of 192.168.1/26, there are 6 bits for host addresses, yielding 64 possible addresses. However, the first and last subnets are the network and broadcast addresses for this subnet. Therefore, the range of host addresses for this subnet is 192.168.1 to 192.168.1. The other subnets do not contain the address 192.168.1 as a valid host address.
43. Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)
This host does not have a default gateway configured. There are 4 hops between this device and the device at 192.168.100. There is connectivity between this device and the device at 192.168.100. The connectivity between these two hosts allows for videoconferencing calls. The average transmission time between the two hosts is 2 milliseconds.
Explain: The output displays a successful Layer 3 connection between a host computer and a host at 19.168.100. It can be determined that 4 hops exist between them and the average transmission time is 1 milliseconds. Layer 3 connectivity does not necessarily mean that an application can run between the hosts.
44. Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)
Capture traffic on the weekends when most employees are off work. Capture traffic during peak utilization times to get a good representation of the different traffic types. Only capture traffic in the areas of the network that receive most of the traffic such as the data center. Perform the capture on different network segments. Only capture WAN traffic because traffic to the web is responsible for the largest amount of traffic on a network.
Explanation: Traffic flow patterns should be gathered during peak utilization times to get a good representation of the different traffic types. The capture
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should also be performed on different network segments because some traffic will be local to a particular segment.
45. What is the consequence of configuring a router with the ipv6 unicast- routing global configuration command?
All router interfaces will be automatically activated. The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages. Each router interface will generate an IPv6 link-local address. It statically creates a global unicast address on this router.
46. Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)
application network data link session presentation transport
Explanation: The TCP/IP model consists of four layers: application, transport, internet, and network access. The OSI model consists of seven layers: application, presentation, session, transport, network, data link, and physical. The top three layers of the OSI model: application, presentation, and session map to the application layer of the TCP/IP model.
47. Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?
nothing, because the router has a route to the destination network open the header and use it to determine whether the data is to be sent out S0/0/ open the header and replace the destination MAC address with a new one remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/
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Neighbor Solicitation Destination Unreachable Host Confirmation Time Exceeded Router Advertisement Route Redirection
52. A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting?
DHCP SMTP DNS HTTP
53. What is an advantage for small organizations of adopting IMAP instead of POP?
POP only allows the client to store messages in a centralized way, while IMAP allows distributed storage. Messages are kept in the mail servers until they are manually deleted from the email client. When the user connects to a POP server, copies of the messages are kept in the mail server for a short time, but IMAP keeps them for a long time. IMAP sends and retrieves email, but POP only retrieves email.
Explanation: IMAP and POP are protocols that are used to retrieve email messages. The advantage of using IMAP instead of POP is that when the user connects to an IMAP-capable server, copies of the messages are downloaded to the client application. IMAP then stores the email messages on the server until the user manually deletes those messages.
54. A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?
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tracert ipconfig netstat nslookup
Explain: Traceroute (tracert) is a utility that generates a list of hops that were successfully reached along the path from source to destination list can provide important verification and troubleshooting information. The ipconfig utility is used to display the IP configuration settings on a Windows PC. The Netstat utility is used to identify which active TCP connections are open and running on a networked host. Nslookup is a utility that allows the user to manually query the name servers to resolve a given host name. This utility can also be used to troubleshoot name resolution issues and to verify the current status of the name servers.
55. Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
implements CSMA/CD over legacy shared half-duplex media enables IPv4 and IPv6 to utilize the same physical medium integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements a process to delimit fields within an Ethernet 2 frame places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
Other case:
responsible for internal structure of Ethernet frame applies source and destination MAC addresses to Ethernet frame handles communication between upper layer networking software and Ethernet NIC hardware adds Ethernet control information to network protocol data implements trailer with frame check sequence for error detection
Other case:
integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
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A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
61. A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?
FTP DHCP Telnet SSH
62. What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)
Switches become overloaded because they concentrate all the traffic from the attached subnets. The ARP request is sent as a broadcast, and will flood the entire subnet. The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain. A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table. All ARP request messages must be processed by all nodes on the local network.
Explanation: ARP requests are sent as broadcasts: (1) All nodes will receive them, and they will be processed by software, interrupting the CPU. (2) The switch forwards (floods) Layer 2 broadcasts to all ports. A switch does not change its MAC table based on ARP request or reply messages. The switch populates the MAC table using the source MAC address of all frames. The ARP payload is very small and does not overload the switch.
63. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)
netsh interface ipv6 show neighbor arp -a tracert ping ipconfig nslookup telnet
64. During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
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analyze the destination IP address switch the packet to the directly connected interface look up the next-hop address for the packet discard the traffic after consulting the route table
65. What characteristic describes antispyware?
applications that protect end devices from becoming infected with malicious software a network device that filters access and traffic coming into a network software on a router that filters traffic based on IP addresses or applications a tunneling protocol that provides remote users with secure access into the network of an organization
66. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?
Telnet AUX SSH Console
67. What are the two most effective ways to defend against malware? (Choose two.)
Implement a VPN. Implement network firewalls. Implement RAID. Implement strong passwords. Update the operating system and other application software. Install and update antivirus software.
Explanation: A cybersecurity specialist must be aware of the technologies and measures that are used as countermeasures to protect the organization from threats and vulnerabilities.
68. Which type of security threat would be responsible if a spreadsheet add- on disables the local software firewall?
brute-force attack Trojan horse DoS buffer overflow
Explanation: A Trojan horse is software that does something harmful, but is hidden in legitimate software code. A denial of service (DoS) attack results in interruption of network services to users, network devices, or applications. A brute-force attack commonly involves trying to access a network device. A buffer overflow occurs when a program attempts to store more data in a memory location than it can hold.
69. Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?
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CCNA 1 v7.0 Final Exam Answers Full - Introduction to Networks
University: Emporia State University
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