Final Exam Cisco

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

1E6F:65FF:FEC2:BDF8

A network engineer has been given the network address of 192.168.99.0 and a subnet mask of 255.255.255.192 to subnet across the four networks shown. How many total host addresses are unused across all four subnets?

200

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?

Store-and-forward

What service is provided by HTTPS?

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

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

Zigbee

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?

audio conference, financial transactions, web page

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?

switch the packet to the directly connected interface

A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet?

when the value in the TTL field reaches zero

This field identifies the beginning of a frame

Frame start

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

HTTP

Physical damage to servers, routers, switches, cabling plants, and workstations

Hardware threats

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

Host address?

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

IMAP

32 of 128 bits

IP address

Contained in the Layer 3 header

IP address

Separated into a network portion and a unique identifier

IP address

What two pieces of information are displayed in the output of the "show ip interface brief" command? (Choose two)

IP addresses Layer 1 statuses

Match the application protocols to the correct transport protocols DHCP.

UDP

Match the application protocols to the correct transport protocols TFTP

UDP

Match the application protocols to the correct transport protocols. TFTP

UDP

Prevents access to websites

URL filtering

What are the two most effective ways to defend against malware? (Choose Two)

Update the operating system and other application software. Install and update antivirus software

The field checks if the frame had been damaged during the transfer

error detection

This network portion of the address is assigned by the provider.

global routing prefix

Match a statement to the related network model Requires a specific user interface

Peer-to-peer application

The Process of converting information from one format into another acceptable for transmission

message encoding

Appropriate IP addresses Loopback address

127.0.0.1

Appropriate IP addresses A Link-local address

169.254.1.5

Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network Network A

192.168.0.0/25

Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network Network B

192.168.0.128/26

Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network Network C

192.168.0.192/27

Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network Network D

192.168.0.224/30

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

2001:DA48:FC5:A4::/64

Appropriate IP addresses A public address

240.2.6.255

Appropriate IP addresses An Experimental address

240.2.6.255

A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected device's. What is the smallest network mask that the network administrator can use for the new network?

255.244.255.128

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?

255.255.255.0

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?

255.255.255.192

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

255.255.255.192

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?

255.255.255.224

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?

255.255.255.224

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?

255.255.255.240

A network administrator wants to have the same subnet mask for three sub networks at a small site. The site has the following networks and number of devices: What single subnet mask would be appropriate to use for the three subnetworks.

255.255.255.240

A network admin 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 admin can use for the new network?

255.255.255.248

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?

256

Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose Two)

A Source Address field name from IPv4 is kept in IPv6 The Time-to-Live field from IPv4 has been replaced by the Hop limit field in IPv6

What service is provided by HTTP?

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

What are the three characteristics of the CSMA/CD process?

A device listens and waits until the media is not busy before transmitting. After detecting a collision, host can attempt to resume transmission after a random time delay has expired. All of the devices on a segment see data that passes on the network medium.

Describes a function provided by the transport layer

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 windows.

The field helps to direct the frame toward its destination

Addressing

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

All Ipv6 configured routers on the local link

What service is provided by SMTP?

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

What service is provided by FTP?

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

What service is provided by Internet Messenger?

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

Prevents access by port number

Application filtering

What characteristic describes antivirus software

Applications that protect end devices from becoming infected with malicious software

What characteristic describes antispyware?

Applications that protect end devices from becoming infected with malicious software.

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

CSMA/CA

Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer (choose two)

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

What happens when the transport input ssh command is entered on the switch VTY line?

Communication between the switch and remote users is encrypted.

An Admin defined a local user account with a secret password on router R1 for use with SSH. which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose Three)

Configure the IP domain name on the router. Generate the SSH keys. Enable inbound VTY SSH sessions.

Match the characteristic to the forwarding method Begins forwarding when the destination address is received

Cut-through

Match the characteristic to the forwarding method Has low latnency

Cut-through

Match the characteristic to the forwarding method May forward runt frames

Cut-through

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

DHCP

Match the application protocols to the correct transport protocols UDP

DHCP

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

DNS

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

DNS

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? (Choose two.)

DNS server default gateway

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 alter by interference, distortion, or signal loss?

Frame check sequence field

Which two statements are correct about MAC and IP addresses during data transmission if NAT is not involved?

Destination IP addresses in a packet header remain constant along the entire path to a target host. Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another.

Which two statements describe features of an IPv4 routing table on a router?

Directly connected interfaces will have two route source codes in the routing table: C and S. If a default static route is configured in the router, an entry will be included in the routing table with source code S.

What are two characteristics of IP? (Choose two)

Does not require a dedicated end-to-end connection Operates independently of the network media

What service is provided by DHCP?

Dynamically assigns IP addresses to end and intermediary devices.

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

Electrical threats

Which two functions are performed at the LLC sub layer of the OSI Data Link Layer to facilitate Ethernet communication?( Choose two)

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.

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

Environmental threats

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?

Exit privileged EXEC mode and press Enter

What range of link-local addresses can be assigned to an IPv6 enabled interface?

FE80::/10

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

FTP

A network tech is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two)

Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires. Fiber optic provides higher data capacity but is more expensive that copper cabling.

What are two features of ARP? (Choose two.)

If a host is ready to send a packet to a local to 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

What are two common causes of signal degradation when using UTP cabling? (Choose two)

Improper termination Low-quality cable or connectors

This part of the address if the equivalent to the host portion of an IPv4 address

Interface ID

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network. (Choose three)

Interference Security Coverage area

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

Internet

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

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.

What is an advantage to using a protocol that is defined by an open standard?

It encourages competition and promotes choices.

How does the service password-encryption command enhance password security on Cisco router and switches?

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

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?

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

Which is one main characteristic of the data link layer?

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

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 an ARP request for the MAC address of the default gateway.

Appropriate layer of the OSI model 802.2 header

Layer 2

Appropriate layer of the OSI model Destination MAC address

Layer 2

Appropriate layer of the OSI model FCS(Frame Check Sequence)

Layer 2

Appropriate layer of the OSI model Source IP Address

Layer 3

Appropriate layer of the OSI model TTL

Layer 3

Appropriate layer of the OSI model Acknowledgment Number

Layer 4

Appropriate layer of the OSI model Destination Port Number

Layer 4

What service is provided by BOOTP?

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

IP address of a server

Logical Topology

48 bits

MAC address

Contained in the Layer 2 header

MAC address

Separated into OUI and a unique indentifier

MAC address

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

MAC address

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

Maintenance threats

What three requirements are defined by the protocol used in network communications to allow message transmission across a network (Choose Three)

Message size Message encoding Delivery options

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

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

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)

NAT introduces problems for some applications that require end-to-end connectivity. NAT provides a solution to slow down the IPv4 address depletion.

What are two ICMPv6 messages that are not present in ICMP for IPv4 (Choose Two)

Neighbor solicitation Router Advertisement

What is a benefit of using cloud computing in networking?

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

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?

Nslookup

What two protocols operate at the top layer of the TCP/IP protocol suite (Choose Two)

POP & DNS

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

POP3

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

Pee-to-peer (P2P)

Match a statement to the related network model Client and server roles are set on a per request basis

Peer-to peer network

Match a statement to the related network model A background service is required

Peer-to-Peer Application

Match a statement to the related network model No dedicated server is requred

Peet-to-Peer Network

Location of a desktop PC in classroom

Physical topology

Path of cables that connect rooms to wiring closets

Physical topology

A group of windows PC's in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PC's can access local network resource but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PC's, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose Three)

Ping ipconfig nslookup

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

Places info in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame. Implements trailer with frame check sequence for error detection.

What are two characteristics shared by TCP and UDP? (Choose two)

Port numbering Use of checksum

What is a function of the data link layer?

Provides for the exchange of frames over a common local media

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.)

RFI EMI

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

RJ-45

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?

Reconnaissance

What service is provided by DNS?

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

What service is provided by POP3

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

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

SSH

A network admin 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?

SSH

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 employee. What three networks characteristic are described in this scenario? ( choose three)

Security Quality of Service Fault tolerance

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?

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

Prevents unsolicited incoming sessions

Stateful packet inspection

Match the characteristic to the forwarding method Always stores the entire frame

Store-and-forward

Match the characteristic to the forwarding method Checks the CRC before forwarding

Store-and-forward

Match the characteristic to the forwarding method Checks the frame length before forwarding

Store-and-forward

This part of the address is used by an organization to identify subnets.

Subnet ID

What are the three parts of an IPv6 global unicast address? (Choose three)

Subnet ID Global routing prefix Interface ID

Match the application protocols to the correct transport protocols FTP

TCP

Match the application protocols to the correct transport protocols HTTP

TCP

Match the application protocols to the correct transport protocols SMTP

TCP

Match the application protocols to the correct transport protocols. FTP

TCP

Match the application protocols to the correct transport protocols. HTTP

TCP

Match the application protocols to the correct transport protocols. SMTP

TCP

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

TFTP

What are two problems that can be caused by a large number of ARP request and reply message? (Choose Two)

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

What is the consequence of configuration a router with the IPv6 unicameral-routing global configuration command?

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages

An administrator is trying to configure the switch but receives the error message that is displayed Switch> config t ^ % Invaild input detected at '^' marker

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

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 source port number that is used by each application.*

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

The host cannot communicate with hosts in other networks

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

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 be remotely managed from a host on another network.

Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?

Time-to-Live

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

Trojan horse

This field is used by the LLC to identify the Layer 3 protocol.

Type

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

Video Voice

What two security solutions are most likely to be used only in a corporate environment? (Choose Two)

Virtual private networks Intrusion prevention systems

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

ZigBee

What characteristic describes a VPN?

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

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

accessing the media Data encapsulation

Received by a sender before transmitting more segments in a session

acknowledgment

What characteristic describes a DoS attack?

an attack that slows or crashes a device or network service

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

application session presentation

If Host1 were to transfer a file to the server, what layers of the TCP/IP model would be used?

application, transport, Internet, and network access layers

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?

authorization

What are three commonly followed standards for constructing and installing cabling? (Choose three.)

cable lengths Pinouts Connector Types

What are two functions that provided by the network layer?

directing data packets two functions that are provided by the network layer? providing end devices with a unique network identifier

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 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?

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

What does the term "attenuation" mean in data communication?

loss of signal strength as distance increases

What characteristic describes a Trojan horse?

malicious software or code running on an end device

What characteristic describes a virus?

malicious software or code running on an end device

The process of placing one message format inside another message format

message encapsulation

The process of breaking up a long message into individual pieces before being sent over the network.

message sizing

What two ICMPv6 message types must be permitted through IPV6 access control lists to allow resolution of layer 3 addresses to layer 2 MAC addresses?

neighbor advertisement & neighbor solicitations

Prevents access based on IP or MAC address

packet filtering

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

places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame applies source and destination MAC addresses to Ethernet frame

What are proprietary protocols?

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

Method of managing segments of data loss

retransmission

Which two commands can be used on a windows host to display the routing table?

route print netstat-r

Used to identify missing segments of data

sequence numbers

What characteristic describes an IPS?

software that identifies fast-spreading threats

What characteristic describes adware?

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

What characteristic describes spyware?

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

Which switching method drops frames that fail the FCS check?

store- and-forward swithcing

A user is complaining that an external web page is taking longer than normal to load. The web page does eventually load on the user machine. Which tool should the tech use with admin privileges in order to locate where the issue is in the network?

tacert

A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination?

the Mac address of the default gateway

Which information does the show startup-config command display?

the contents of the saved configuration file in the NVRAM

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 normal network behavior?

the network performance baseline

What characteristic describes identity theft?

the use of stolen credentials to access private data.

Why would a layer 2 switch need and IP address?

to enable the switch to be managed remotely

What is the purpose of the TCP sliding window?

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

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

twisting the wires together into pairs

Number of bytes a device can accept and process at one time

window size

Users report that the network access is slow. After questioning the employees, the network admin learned that one employee downloaded a third-party scanning program for the printer. What type of malware might be introduce that causes slow performance of the network

worm