itn finals

video and voice

1. Which two traffic types use the Real-Time Transport Protocol (RTP)?

Zigbee

2. Which wireless technology has low-power and data rate requirements making it popular in home automation applications?

internet

3. Which layer of the TCP/IP model provides a route to forward messages through an internetwork?

DNS

4. Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services?

protocols developed by organizations who have control over their definition and operation

5. What are proprietary protocols?

Resolves domain names, such as cisco.com, into IP addresses.

6. What service is provided by DNS?

POP3

7. A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?

ipconfig

8. What command can be used on a Windows PC to see the IP configuration of that computer?

peer-to-peer (P2P)

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?

malicious software or code running on an end device

10. What characteristic describes a virus?

audio conference, financial transactions, web page

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?

application, transport, Internet, and network access layers

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?

R1: G0/0

15. Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?

An application that allows real-time chatting among remote users.

16. What service is provided by Internet Messenger?

RFI and EMI

19. A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)

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

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?

DNS

22. A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?

255.255.255.224

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?

malicious software or code running on an end device

24. What characteristic describes a Trojan horse?

Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

25. What service is provided by HTTPS?

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

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?

255.255.255.192

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?

an attack that slows or crashes a device or network service

29. What characteristic describes a DoS attack?

Allows clients to send email to a mail server and the servers to send email to other servers.

31. What service is provided by SMTP?

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.

32. Which scenario describes a function provided by the transport layer?

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

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?

loss of signal strength as distance increases

34. What does the term “attenuation” mean in data communication?

The administrator must first enter privileged EXEC mode before issuing the command.

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?

POP and DNS

36. Which two protocols operate at the top layer of the TCP/IP protocol suite?

authorization

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?

message size, message encoding, delivery options

38. What three requirements are defined by the protocols used in network communications to allow message transmission across a network?

does not require a dedicated end-to-end connection

operates independently of the network media

39. What are two characteristics of IP?

security, quality of service, fault tolerance

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?

improper termination, low-quality cable or connectors

41. What are two common causes of signal degradation when using UTP cabling?

192.168.1.64 /26

42. Which subnet would include the address 192.168.1.96 as a usable host address?

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

45. What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​

The host cannot communicate with hosts in other networks.S

48. What will happen if the default gateway address is incorrectly configured on a host?

neighbor solicitation, router advertisement

51. What are two ICMPv6 messages that are not present in ICMP for IPv4?

HTTP

52. A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting?

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

53. What is an advantage for small organizations of adopting IMAP instead of POP?

nslookup

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?

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

56. The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?

Communication between the switch and remote users is encrypted.

57. What happens when the transport input ssh command is entered on the switch vty lines?

reconnaissance

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?

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

60. What service is provided by HTTP?

DHCP

61. A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

switch the packet to the directly connected interface

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?

applications that protect end devices from becoming infected with malicious software

65. What characteristic describes antispyware?

SSH

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?

Trojan horse

68. Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?

frame check sequence field

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?

255.255.255.248

70. A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?

Retrieves email from the server by downloading the email to the local mail application of the client.

71. What service is provided by POP3?

virtual private network, intrusion prevention systems

72. What two security solutions are most likely to be used only in a corporate environment?

applications that protect end devices from becoming infected with malicious software

73. What characteristic describes antivirus software?

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

74. What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

TFTP

75. A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?

all IPv6 configured routers on the local link​

78. An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

Exit privileged EXEC mode and press Enter .

81. A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

CSMA/CA

82. What method is used to manage contention-based access on a wireless network?

provides for the exchange of frames over a common local media

83. What is a function of the data link layer?

to request that a source decrease the rate at which it transmits data

84. What is the purpose of the TCP sliding window?

software that is installed on a user device and collects information about the user

85. What characteristic describes spyware?

store-and-forward switching

86. Which switching method drops frames that fail the FCS check?

FE80::/10

87. Which range of link-local addresses can be assigned to an IPv6-enabled interface?

Allows for data transfers between a client and a file server.

88. What service is provided by FTP?

DNS server, default gateway

89. A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access?

1E6F:65FF:FEC2:BDF8

91. What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?

PC2 will send an ARP reply with the PC2 MAC address.

92. Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next?

Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.

93. What service is provided by BOOTP?

software that is installed on a user device and collects information about the user

94. What characteristic describes adware?

store-and-forward

95. When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?

accessing the media, data encapsulation

97. What are two primary responsibilities of the Ethernet MAC sublayer?

2001:DA48:FC5:A4::/64​

100. What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?

the network performance baseline

102. Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?

It encrypts passwords that are stored in router or switch configuration files.

103. How does the service password-encryption command enhance password security on Cisco routers and switches?

255.255.255.224

105. A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:
IP phones – 22 addresses
PCs – 20 addresses needed
Printers – 2 addresses needed
Scanners – 2 addresses needed

The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?

the use of stolen credentials to access private data

106. What characteristic describes identity theft?

255.255.255.0S

107. A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network?

IMAP

111. A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?

port numbering, use of checksum

112. What are two characteristics shared by TCP and UDP?

FTP

114. A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?

MAC address

115. What attribute of a NIC would place it at the data link layer of the OSI model?

255.255.255.240

116. A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network?

twisting the wires together into pairs

117. What technique is used with UTP cable to help protect against signal interference from crosstalk?

RJ45

122. Which connector is used with twisted-pair cabling in an Ethernet LAN?

SSH

123. A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?

a network device that filters access and traffic coming into a network

124. What characteristic describes an IPS?

Dynamically assigns IP addresses to end and intermediary devices.

125. What service is provided by DHCP?

Zigbee

128. Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?

It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.

130. A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?

Security rules are applied to the default gateway device, preventing it from processing ping requests.

131. Two pings were issued from a host on a local network. The first ping was issued to the IP address of the default gateway of the host and it failed. The second ping was issued to the IP address of a host outside the local network and it was successful. What is a possible cause for the failed ping?

256

132. An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?

255.255.255.192

133. What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?

Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.

135. What is a benefit of using cloud computing in networking?

It shields the upper layer protocol from being aware of the physical medium to be used in the communication.

137. What is one main characteristic of the data link layer?

the contents of the saved configuration file in the NVRAM

139. Which information does the show startup-config command display?

route print, netstat -r

140. Which two commands can be used on a Windows host to display the routing table?

a tunneling protocol that provides remote users with secure access into the network of an organization

143. What characteristic describes a VPN?

to enable the switch to be managed remotely

144. Why would a Layer 2 switch need an IP address?