CCNA v7 final exam

A network admin 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 admin can use for the network

/25 255.255.255.0

a network admin is adding a new network, the lan must support 61 hosts, what is the smallest network mask they can use

/26 255.255.255.192 (64)

a network admin wants the same subnet for three subnetworks on a small site. A:10, B:8, C:2.

16 hosts : /28 255.255.255.240

which subnet would include the address 192.168.1.96

192.168.1.64/26

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

1E6F:65FF:FEC2:BDF8

What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D14::1/64

2001:DA48:FC5:A4::/64

a network admin 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 admin can use for the new network?

255.255.255.224 /27

network with 46 hosts, network add 192.168.10.0/24 what is the best subnet mask for this network

255.255.255.224 /27

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

What are three characteristics of the CSMA/CD process

After detecting a collision, hosts 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, A device listens and waits until the media is not busy before transmitting

what method is used to manage contention-based on a wireless network

CSMA/CA collision avoidance

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

Communication between the switch and remote user is encrypted

a client packet is received by a server. the packet has a destination port num of 67. what service is the client requesting

DHCP

a client packet is received by a server. the packet has a destination port num of 53

DNS

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

DNS

A network admin 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?

EMI(electromagnetic interference) RFI(radio frequency interference)

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

Exit privileged EXEC mode and press Enter

Which range of link-local addressses can be assigned to an IPv6-enabled interface?

FE80::/10

What two pieces of information are displayed in the output of the show ip interface brief command

IP address, Layer 1 statuses

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

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 to before it can begin to use this IPv6 address?

It must send an ICMPv6 neighbor solicitation message to ensure that the address is not already in use on the network

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network

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

which two protocols operate a the top layer of the TCP/IP protocol suite

POP, DNS

which value, that is contained in an ipv4 header field, is decremented by each router that receives a packet?

TTL

Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP and UDP in this situation.

The source port field identifies the running app 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.

which wireless technology has low-power and data rate requirements making it popular in home automation apps

ZigBee

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 two problems that can be cause by a large number of ARP request and reply messages

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, The ARP request is sent as a broadcast, and will flood the entire subnet

what scenario 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 window

what are two primary responsibilities of the ethernet mac sublayer

accessing the media, data encapsulation

an ipv6 enabled device sends a packet with the destination address of FF02::2(local link) what is the target of this packet?

all ipv6 configured routers on the local link

what service is provided by internet messenger

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

what three layers of the OSI model map to the application layer of the TCP/IP model

application, session, presentation

what characteristic describes antispyware

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

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

A company has a file server that shares a folder named public. the network security policy specifies that the 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 two statements are corr3ect about mac and ip addresses during data transmission if nat is not involved

destination and source mac addresses have local significance and change every time a frame goes from one lan to another, destination ip addresses in a packet header remain constant along the entire path to a target host

what 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 service is provided by https

encryption to secure exchange of text, media on the internet

Which frame field is created by a source node and used by a destination node to ensure that transmitted data signal has not been altered by interference, distortion, or signal loss?

frame check sequence field

a client packet is received by as server. The packet has a destination port num 80. what service is being requested

http

What are two features of ARP

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 has the IP address but not the MAC address of the destination, it generates an ARP broadcast

what subnet is needed if an ipv4 network has 40 devices

255.255.255.192 /26 (64)

Math the application protocols to the correct transport protocols

TCP(FTP, HTTP, SMTP), UDP(DCHP, TFTP)

which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer

capture traffic during peak utilization times to get a good representation of the different traffic types, perform the capture on different network segments

an admin defined a local user account with a secure password on router r1 for use with ssh. Which three additional steps are required to configure r1 to accept only encrypted ssh connections

configure the ip domain name on the router, generate the ssh keys, enable inbound vty ssh sessions

what are two function that are provided by the network layer

directing data packets to destination hosts on other networks, providing end devices with unique network identifier

a user is attempting to access a website without success what who config values must be set on the host to allow this access

dns server, default gateway

what are two characteristics of IP

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

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 routers and switches

it encrypts passwords that are stored in router or switch configuration files

a network technician is researching the use of fiber optic cabling in a new technology center. which two issues should be considered before implementing fiber optic media

it requires different termination and splicing expertise from what copper cabling requires requires, fiber optic is very expensive

what 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 destination MAC address

it will send an ARP request for the mac address of the default gateways

what does the term attenuation mean in data communication

loss of signal strength as distance increases

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 recourses but not the internet recourses. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configs on the pcs, also verify connectivity to the local router. which three windows cli commands and utilities will provide the necessary info

ping, ipconfig, nslookup

what are three commonly followed standards for constructing and installing cabling

pinouts, cable length, connector types

What are two characteristics shared by TCP and UDP

port numbering, use of checksum

what are proprietary protocols

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

What is a function of the data link layer?

provides for the exchange of frames over a common local media

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.)

quality of service, fault tolerance, security

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?

remove the ethernet header and configure a new layer 2 header before sending it out S0/0/0

which connector is used with tpc cabling in an ethernet lan

rj-45 cable (ethernet cable)

what two commands can be used on windows to display the routing table

route print, netstat -r

what are two icmpv6 messages that are not present in icmp for ipv4

router advertisement, neighbor solicitation

A network admin is designing the layout of a new wireless network. which three areas of concern should be accounted for when building a wireless network

security, interference, coverage area

what characteristic describes spyware

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

what characteristic describes adware

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

a network admin needs to keep the user id, password, and session contents private when establishing remote cli connectivity with a switch, what method should they use

ssh

when a switch config 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-foreward

which switching method drops frames that fail the FCS check

store-and-forward switching

what are the three parts of an ipv6 global unicast address

subnet id, global routing prefix, interface id

a client packet is received by a server. the packet has a destination port number 69. what service is being requested

tftp

which information does the show startup-config command display

the contents of the saved configuration file in the NVRAM

how is a pc able to keep track of the data flow between multiple apps sessions and have each app receive the correct packet flows

the data flow is being tracked based on the source port num that is used by each app

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

the host cannot communicate with hosts in other networks

What is the consequence of configuring a router with the ipv6 unicast routing global config command

the ipv6 enabled router interfaces begin sending icmpv6 advertisement messages

what is the consequence of configuring a router with the ipv6 unicast-routing global config command

the ipv6 enabled router interfaces begin sending icmpv6 router advertisement messages

a user sends an http request to a web server on a remote network. during encapsulation for this request, what info is added to the address fild of a frame to indicate the destination

the mac address of the gateway

users are reporting delays in authentication and accessing network recourses during certain times of the week. what kind of info should network engineers check to find out if this situation is a part of a normal network behavior

the network performance baseline

which two statements are correct in a comparison of IPv4 an IPv6 packet headers

the source address field name from ipv4 is kept in ipv6, the TTL field from IPv4 has been replaced by the Hop limit field in IPv6

the global config command ip default-gateway 172.16.100.1 is applied to ta switch. What is the effect of this command

the switch can be remotely managed from a host on the network

Refer to the exhibit. (rj-45 adapter). what is wrong with the displayed termination

the untwisted length of each wire is too long

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

they cannot communicate with hosts in other networks

why would a layer 2 switch need an ip address

to enable the switch to be managed remotely

what is the purpose of tcp sliding window

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

an external webpage is taking longer than normal to load. which tool should the technician use to locate where the issue is in the network

tracert

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

trojan horse

what technique is used with utp cable to help protect against signal interference from crosstalk

twisting the wires together into pairs

what are the two most effective ways to defend against malware

update the os and other application software, install and update antivirus software

which two traffic types use real-time transport protocol RTP

voice and video

a user is executing tracert to a local 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 0

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 introduced that causes slow performance of the network

worm

which two functions are performed at the MAC sublayer of the OSI data link layer to facilitate ethernet comms

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

low quality cable or connectors, improper termination

what attribute of a nic would place it at the data link layer of the osi model

mac address

what characteristic describes a trojan horse

malicious software or code running on an end device

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

message encoding, delivery options, message size

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

A wired laser printer is attached to a home computer. That printer has been shared so that other computers onto he home network can also use the printer. What networking model is in use.

peer-to-peer