Final Exam CCNA 1

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

Application Session Presentation

9. A wired laser printer is attached to a home computer. That printer has been shared so that other computers on the home network can also use the printer. What networking model is in use? client-based master-slave point-to-point peer-to-peer (P2P)

P2P

FTP

TCP

HTTP

TCP

SMTP

TCP

48. What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with other hosts in the local network. The host cannot communicate with hosts in other networks. A ping from the host to 127.0.0.1 would not be successful. The host will have to use ARP to determine the correct address of the default gateway. The switch will not forward packets initiated by the host.

The host cannot communicate with hosts in other networks.

56. The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command? The switch can communicate with other hosts on the 172.16.100.0 network. The switch can be remotely managed from a host on another network. The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1. The switch will have a management interface with the address 172.16.100.1.

The switch can be remotely managed from a host on another network.

DHCP

UDP

TFTP

UDP

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

enables IPv4 and IPv6 to utilize the same physical medium places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

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

3. Which layer of the TCP/IP model provides a route to forward messages through an internetwork? -application -network access -internet -transport

internet

38. What three requirements are defined by the protocols used in network communications to allow message transmission across a network? (Choose three.) message size message encoding connector specifications media selection delivery options end-device installation

message size message encoding delivery options

Retransmission

method of managing segments of data loss

Window Size

number of bytes a destination device can accept and process at one time

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

ping ipconfig nslookup

Maintenance Threats

poor handling of key electrical components (electrostatic discharge), lack of critical spare parts, poor cabling, and poor labeling

Sequence number

used to identify segments of data

Electrical Threats

voltage spikes, insufficient supply voltage (brownouts), unconditioned power (noise), and total power loss

42. Which subnet would include the address 192.168.1.96 as a usable host address? 192.168.1.64/26 192.168.1.32/27 192.168.1.32/28 192.168.1.64/29

192.168.1.64/26

50. A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.128 255.255.255.240 255.255.255.248 255.255.255.224

255.255.255.128

27. A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.240 255.255.255.224 255.255.255.192 255.255.255.128

255.255.255.192

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? 255.255.255.128 255.255.255.192 255.255.255.224 255.255.255.240

255.255.255.224

MAC SublayerLayer 2

802.2 header FCS Destination MAC

60. What service is provided by HTTP? Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows for data transfers between a client and a file server. An application that allows real-time chatting among remote users. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

32. Which scenario describes a function provided by the transport layer? A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network. A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window. A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

Layer 4

Acknowledgement Number Destination Port Number

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

Application Session Presentation

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.

Capture traffic during peak utilization times to get a good representation of the different traffic types. Perform the capture on different network segments.

57. What happens when the transport input ssh command is entered on the switch vty lines? The SSH client on the switch is enabled. The switch requires a username/password combination for remote access. Communication between the switch and remote users is encrypted. The switch requires remote connections via a proprietary client software.

Communication between the switch and remote users is encrypted.

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

DHCP

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) POP3 IMAP

DNS

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

HTTP

49. What are two features of ARP? (Choose two.) When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses. An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address. If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

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? 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.

It will send an ARP request for the MAC address of the default gateway.

33.Refer 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 = 172.16.20.200 Layer 3 source address = 172.16.10.200 Layer 2 destination address = 00-00-0c-94-36-dd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.10.200 Layer 2 destination address = 00-00-0c-94-36-cd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.99 Layer 3 source address = 172.16.10.200 Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.100.200

Layer 2 destination address = 00-00-0c-94-36-abLayer 2 source address = 00-00-0c-94-36-bbLayer 3 destination address = 172.16.20.200Layer 3 source address = 172.16.10.200

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.

Messages are kept in the mail servers until they are manually deleted from the email client.

51. What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.) Neighbor Solicitation Destination Unreachable Host Confirmation Time Exceeded Router Advertisement Route Redirection

Neighbor Solicitation Router Advertisement

Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.) TCP IP UDP POP DNS Ethernet

POP DNS

36. Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.) TCP IP UDP POP DNS Ethernet

POP DNS

15. Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1? R1: S0/0/0 R2: S0/0/1 R1: G0/0 R2: S0/0/0

R1: G0/0

Layer 3

TTL Source IP Address

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.

The ARP request is sent as a broadcast, and will flood the entire subnet. All ARP request messages must be processed by all nodes on the local network.

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.

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

26. A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? The data flow is being tracked based on the destination MAC address of the technician PC. The data flow is being tracked based on the source port number that is used by each application. The data flow is being tracked based on the source IP address that is used by the PC of the technician. The data flow is being tracked based on the destination IP address that is used by the PC of the technician.

The data flow is being tracked based on the source port number that is used by each application.

148. Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.) The source port field identifies the running application or service that will handle data returning to the PC. The TCP process running on the PC randomly selects the destination port when establishing a session with the server. UDP segments are encapsulated within IP packets for transport across the network. The UDP destination port number identifies the application or service on the server which will handle the data. TCP is the preferred protocol when a function requires lower network overhead. The TCP source port number identifies the sending host on the network.

The source port field identifies the running application or service that will handle data returning to the PC. UDP segments are encapsulated within IP packets for transport across the network. The UDP destination port number identifies the application or service on the server which will handle the data.

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 192.168.100.1. There is connectivity between this device and the device at 192.168.100.1. The connectivity between these two hosts allows for videoconferencing calls. The average transmission time between the two hosts is 2 milliseconds.

There are 4 hops between this device and the device at 192.168.100.1. The connectivity between these two hosts allows for videoconferencing calls.

FCS

Used for Layer 2 error control

1. Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.) - video - web - file transfer - voice - peer to peer

Video and voice

2. Which wireless technology has low-power and data rate requirements making it popular in home automation applications? -ZigBee -LoRaWAN -5G -Wi-Fi

ZigBee

13. Refer to the exhibit. If Host1 were to transfer a file to the server, what layers of the TCP/IP model would be used? only application and Internet layers only Internet and network access layers only application, Internet, and network access layers application, transport, Internet, and network access layers only application, transport, network, data link, and physical layers application, session, transport, network, data link, and physical layers

application, transport, Internet, and network access layers

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

audio conference, financial transactions, web page

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

authorization

39. What are two characteristics of IP? (Choose two.) does not require a dedicated end-to-end connection operates independently of the network media retransmits packets if errors occur re-assembles out of order packets into the correct order at the receiver end guarantees delivery of packets

does not require a dedicated end-to-end connection operates independently of the network media

55. Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) enables IPv4 and IPv6 to utilize the same physical medium adds Ethernet control information to network protocol data applies source and destination MAC addresses to Ethernet frame responsible for the internal structure of Ethernet frame implements trailer with frame check sequence for error detection

enables IPv4 and IPv6 to utilize the same physical medium adds Ethernet control information to network protocol data

55. Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) enables IPv4 and IPv6 to utilize the same physical medium applies source and destination MAC addresses to Ethernet frame integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper handles communication between upper layer networking software and Ethernet NIC hardware responsible for internal structure of Ethernet frame

enables IPv4 and IPv6 to utilize the same physical medium handles communication between upper layer networking software and Ethernet NIC hardware

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

implements trailer with frame check sequence for error detection implements a process to delimit fields within an Ethernet 2 frame responsible for internal structure of Ethernet frame integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements CSMA/CD over legacy shared half-duplex media applies delimiting of Ethernet frame fields to synchronize communication between nodes applies source and destination MAC addresses to Ethernet frame

41. What are two common causes of signal degradation when using UTP cabling? (Choose two.) improper termination low-quality shielding in cable installing cables in conduit low-quality cable or connectors loss of light over long distances

improper termination low-quality cable or connectors

Which layer of the TCP/IP model provides a route to forward messages through an internetwork? application network access internet transport

internet

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? tracert ipconfig netstat nslookup

nslookup

Hardware Threats

physical damage to servers, routers, switches, cabling plant, and workstations

59. A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this? DoS access reconnaissance Trojan horse

reconnaissance

40. An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees.What three network characteristics are described in this scenario? (Choose three.) security quality of service scalability powerline networking integrity fault tolerance

security quality of service fault tolerance

Environmental Threats

temperature extremes (too hot or too cold) or humidity extremes (too wet or too dry)