Final

Voice, video

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

Zigbee

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

Internet

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

DNS

. Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services?
- DNS
- email
- file
- web

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

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
- protocols developed by organizations who have control over their definition and operation
- a collection of protocols known as the TCP/IP protocol suite

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

What service is provided by DNS?
- Resolves domain names, such as cisco.com, into IP addresses.
- A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
- Allows for data transfers between a client and a file server.
- Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

POP3

A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?
- DNS
- DHCP
- SMTP
- POP3

ipconfig

What command can be used on a Windows PC to see the IP configuration of that computer?
- show ip interface brief
- ping
- show interfaces
- ipconfig

peer-to-peer (P2P)

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)

malicious software or code running on an end device

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

audio conference, financial transactions, web page

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

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

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.com, into IP addresses.
- Uses encryption to provide secure remote access to network devices and servers.

RFI, EMI

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.)
- crosstalk
- extended length of cabling
- RFI​
- EMI
- signal attenuation

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

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.

DNS

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

255.255.255.224

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

malicious software or code running on an end device

What characteristic describes a Trojan horse?
- malicious software or code running on an end device
- an attack that slows or crashes a device or network service
- the use of stolen credentials to access private data
- a network device that filters access and traffic coming into a network

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

.What service is provided by HTTPS?
- Uses encryption to provide secure remote access to network devices and servers.
- Resolves domain names, such as cisco.com, into IP addresses.
- Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
- Allows remote access to network devices and servers.

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

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.

255.255.255.192

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

an attack that slows or crashes a device or network service

What characteristic describes a DoS attack?
- the use of stolen credentials to access private data
- a network device that filters access and traffic coming into a network
- software that is installed on a user device and collects information about the user
- an attack that slows or crashes a device or network service

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

What service is provided by SMTP?
- Allows clients to send email to a mail server and the servers to send email to other servers.
- Allows remote access to network devices and servers.
- Uses encryption to provide secure remote access to network devices and servers.
- An application that allows real-time chatting among remote users.

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.

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.

loss of signal strength as distance increases

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
- time for a signal to reach its destination
- loss of signal strength as distance increases

POP, DNS

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

Authorisation

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

Message Size, Message Encoding, Delivery options

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

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

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

Security, Quality of Service, Fault tolerance

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

Improper termination, Low quality cable or connectors

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

192.168.1.64/26

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

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

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.

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

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.​

Application
Session
Presentation

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

The host cannot communicate with hosts in other networks.

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.

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.

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.

255.255.255.128

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

Neighbour Solicitation

Router Advertisement

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

HTTP

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

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

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.

nslookup

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

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

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.

Communication between the switch and remote users is encrypted.

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.
- Explanation: The transport input ssh command when entered on the switch vty (virtual terminal lines) will encrypt all inbound controlled telnet connections.

Reconnaisance

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

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

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.

DHCP

. 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

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.

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.

Ping
ipconfig
nslookup

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

switch the packet to the directly connected interface

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?
- 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

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
- 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

SSH

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

Update the operating system and other application software.

Install and update antivirus software.

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.

Trojan horse

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

frame check sequence field

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?
- User Datagram Protocol field
- transport layer error check field
- flow control field
- frame check sequence field
- error correction process field

255.255.255.248

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?
- 255.255.255.248
- 255.255.255.0
- 255.255.255.128
- 255.255.255.192

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

What service is provided by POP3?
- Retrieves email from the server by downloading the email to the local mail application of the client.
- An application that allows real-time chatting among remote users.
- Allows remote access to network devices and servers.
- Uses encryption to provide secure remote access to network devices and servers.

virtual private networks

intrusion prevention systems

What two security solutions are most likely to be used only in a corporate environment? (Choose two.)
- antispyware
- virtual private networks
- intrusion prevention systems
- strong passwords
- antivirus software

applications that protect end devices from becoming infected with malicious software

What characteristic describes antivirus software?
- applications that protect end devices from becoming infected with malicious software
- a network device that filters access and traffic coming into a network
- a tunneling protocol that provides remote users with secure access into the network of an organization
- software on a router that filters traffic based on IP addresses or applications

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 mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?
- It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.
- It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.
- 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.
- It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.

TFTP

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

Configure the IP domain name on the router.

Generate the SSH keys.

Enable inbound vty SSH sessions.

An administrator 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 DNS on the router.
- Generate two-way pre-shared keys.
- Configure the IP domain name on the router.
- Generate the SSH keys.
- Enable inbound vty SSH sessions.
- Enable inbound vty Telnet sessions.

all IPv6 configured routers on the local link​

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​
- all IPv6 enabled devices on the local link​
- all IPv6 DHCP servers​
- all IPv6 enabled devices across the network​
- all IPv6 configured routers on the local link​

Subnet ID
Global Routing Prefix
Interface ID

What are the three parts of an IPv6 global unicast address? (Choose three.)
- subnet ID
- subnet mask
- broadcast address
- global routing prefix
- interface ID

interference
security
coverage area

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.)
- extensive cabling
- mobility options
- packet collision
- interference
- security
- coverage area

Exit privileged EXEC mode and press Enter .

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?
- Enter CTRL-Z at the privileged mode prompt.
- Exit global configuration mode.
- Power cycle the device.
- Reboot the device.
- Exit privileged EXEC mode and press Enter .

CSMA/CA

What method is used to manage contention-based access on a wireless network?
- token passing
- CSMA/CA
- priority ordering
- CSMA/CD

provides for the exchange of frames over a common local media

What is a function of the data link layer?
- provides the formatting of data
- provides end-to-end delivery of data between hosts
- provides delivery of data between two applications
- provides for the exchange of frames over a common local media

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

What is the purpose of the TCP sliding window?
- to ensure that segments arrive in order at the destination
- to end communication when data transmission is complete
- to inform a source to retransmit data from a specific point forward
- to request that a source decrease the rate at which it transmits data

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

What characteristic describes spyware?
- a network device that filters access and traffic coming into a network
- software that is installed on a user device and collects information about the user
- an attack that slows or crashes a device or network service
- the use of stolen credentials to access private data

store-and-forward switching

Which switching method drops frames that fail the FCS check?
- store-and-forward switching
- borderless switching
- ingress port buffering
- cut-through switching

FE80::/10

Which range of link-local addresses can be assigned to an IPv6-enabled interface?
- FEC0::/10
- FDEE::/7
- FE80::/10
- FF00::/8

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

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

DNS server
Default gateway

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
- source port number
- HTTP server
- source MAC address
- default gateway

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

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)
- NAT adds authentication capability to IPv4.
- NAT introduces problems for some applications that require end-to-end connectivity.
- NAT will impact negatively on switch performance.
- NAT provides a solution to slow down the IPv4 address depletion.
- NAT improves packet handling.
- NAT causes routing tables to include more information.

1E6F:65FF:FEC2:BDF8

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?
- 0C6F:65FF:FEC2:BDF8
- 1E6F:65FF:FEC2:BDF8
- C16F:65FF:FEC2:BDF8
- 106F:65FF:FEC2:BDF8

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

What service is provided by BOOTP?
- 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.
- Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.
- A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

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

What characteristic describes adware?
- a network device that filters access and traffic coming into a network
- software that is installed on a user device and collects information about the user
- the use of stolen credentials to access private data
- an attack that slows or crashes a device or network service

store-and-forward

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?
- cut-through
- store-and-forward
- fast-forward
- fragment-free

accessing the media
data encapsulation

What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)
- error detection
- frame delimiting
- accessing the media
- data encapsulation
- logical addressing

2001:DA48:FC5:A4::/64​

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

the network performance baseline

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?
- syslog records and messages
- the network performance baseline
- debug output and packet captures
- network configuration files

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

How does the service password-encryption command enhance password security on Cisco routers and switches?
- It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet.
- It encrypts passwords that are stored in router or switch configuration files.
- It requires that a user type encrypted passwords to gain console access to a router or switch.
- It encrypts passwords as they are sent across the network.

The 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.

Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
- The Source Address field name from IPv4 is kept in IPv6.
- The Version field from IPv4 is not kept in IPv6.
- The Destination Address field is new in IPv6.
- The Header Checksum 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.

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?
- 255.255.255.192
- 255.255.255.252
- 255.255.255.240
- 255.255.255.248
- 255.255.255.0
- 255.255.255.224

the use of stolen credentials to access private data

What characteristic describes identity theft?
- the use of stolen credentials to access private data
- software on a router that filters traffic based on IP addresses or applications
- software that identifies fast-spreading threats
- a tunneling protocol that provides remote users with secure access into the network of an organization

255.255.255.0

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?
- 255.255.255.240
- 255.255.255.0
- 255.255.255.248
- 255.255.255.224

Cable lengths
Pin outs
Connector Types

What are three commonly followed standards for constructing and installing cabling? (Choose three.)
- cost per meter (foot)
- cable lengths
- connector color
- pinouts
- connector types
- tensile strength of plastic insulator

IMAP

A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?
- IMAP
- FTP
- SSH
- Telnet

Port numbering

Use of checksum

What are two characteristics shared by TCP and UDP? (Choose two.)
- default window size
- connectionless communication
- port numbering
- 3-way handshake
- ability to to carry digitized voice
- use of checksum

FTP

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

MAC Address

What attribute of a NIC would place it at the data link layer of the OSI model?
- attached Ethernet cable
- IP address
- MAC address
- RJ-45 port
- TCP/IP protocol stack

255.255.255.240

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?
- 255.255.255.192
- 255.255.255.248
- 255.255.255.224
- 255.255.255.240

Twisting the wires together into pairs

What technique is used with UTP cable to help protect against signal interference from crosstalk?
- wrapping a foil shield around the wire pairs
- twisting the wires together into pairs
- terminating the cable with special grounded connectors
- encasing the cables within a flexible plastic sheath

SSH

A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?
- SSH
- SMB/CIFS
- HTTPS
- SLP

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

What characteristic describes an IPS?
- a tunneling protocol that provides remote users with secure access into the network of an organization
- a network device that filters access and traffic coming into a network
- software that identifies fast-spreading threats
- software on a router that filters traffic based on IP addresses or applications

Dynamically assigns IP addresses to end and intermediary devices.

What service is provided by DHCP?
- An application that allows real-time chatting among remote users.
- Allows remote access to network devices and servers.
- Dynamically assigns IP addresses to end and intermediary devices.
- Uses encryption to provide secure remote access to network devices and servers.

Zigbee

Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?
- Bluetooth
- Zigbee
- WiMAX
- Wi-Fi

neighbor solicitations

neighbor advertisements

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? (Choose two.)
- neighbor solicitations
- echo requests
- neighbor advertisements
- echo replies
- router solicitations
- router advertisements

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

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 a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.
- It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.
- It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.
- It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.

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

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?
- The default gateway is not operational.
- The default gateway device is configured with the wrong IP address.
- Security rules are applied to the default gateway device, preventing it from processing ping requests.
- The TCP/IP stack on the default gateway is not working properly.