it essentials chapter 5
What is the correct order of the layers of the TCP/IP model from the top layer to the bottom? application, session, network, data link, physical application, internet, network access, transport network access, transport, internet, application application, transport, internet, network access
application, transport, internet, network access
When would a printer be considered a network host? when it is connected to a switch when it is connected to a workstation when it is connected to a laptop when it is connected to a PC
when it is connected to a switch
Which IEEE standard operates at wireless frequencies in both the 5 GHz and 2.4 GHz ranges? 802.11n 802.11g 802.11b 802.11a
802.11n
Which technology is most often used to connect devices to a PAN? coaxial cabling Bluetooth fiber optic cabling IEEE 802.11n wireless
Bluetooth
A client packet is received by a server. The packet has a destination port number of 53. What service application is the client requesting? NetBIOS (NetBT) POP3 DNS IMAP
DNS
A user needs to access the Internet from home. Which device is needed if a user connects to an ISP through the telephone network? switch server DSL modem wireless access point
DSL modem
A client packet is received by a server. The packet has a destination port number of 137. What service application is the client requesting? NetBIOS (NetBT) SMB/CIFS HTTPS SLP
NetBIOS (NetBT)
Which two types of signal interference are reduced more by STP than by UTP? (Choose two.) RFI white noise MDF dispersion EMI
RFI EMI
A client packet is received by a server. The packet has a destination port number of 161. What service application is the client requesting? SMB/CIFS HTTPS SLP SNMP
SNMP
A client packet is received by a server. The packet has a destination port number of 23. What service application is the client requesting? Telnet SMB/CIFS HTTPS SLP
Telnet
Which device provides wireless connectivity to users as its primary function? switch router access point modem
access point
Which well-known port number is used by the DHCP (client) protocol? 67 68 20 80 53
68
How many devices can a Bluetooth device connect to simultaneously? 127 7 10 24 5
7
A client packet is received by a server. The packet has a destination port number of 21. What service application is the client requesting? FTP LDAP SLP SNMP
FTP
A client packet is received by a server. The packet has a destination port number of 143. What service application is the client requesting? IMAP SMB/CIFS HTTPS SLP
IMAP
Which two devices are commonly powered by PoE? (Choose two.) access point* core switch IP phone* modular switch router
IP phone access point
A technician is searching through a storage locker and finds a cable modem. What is the purpose of this device? It connects a home or business network to a company that provides internet connectivity as well as television signals. It is placed between two or more networks and protects data and equipment from unauthorized access. It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It connects networks and forwards traffic to remote networks by using IP addressing information.
It connects a home or business network to a company that provides internet connectivity as well as television signals.
A technician is searching through a storage locker and finds a managed switch. What is the purpose of this device? It connects multiple end devices and can be configured for VLANs and port security. It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It provides a wired or wireless connection between end devices, switches, and routers and in some cases, can regenerate weak signals. It is placed between two or more networks and protects data and equipment from unauthorized access.
It connects multiple end devices and can be configured for VLANs and port security.
What is a characteristic of a WAN? It connects multiple networks that are geographically separated. It spans across a campus or city to enable sharing of regional resources. It is typically owned and managed by a single home or business. It requires a wireless access point to connect users to the network.
It connects multiple networks that are geographically separated
A client packet is received by a server. The packet has a destination port number of 389. What service application is the client requesting? LDAP POP3 HTTP NetBIOS (NetBT)
LDAP
A technician is searching through a storage locker and finds a router. What is the purpose of this device? It connects networks and forwards traffic to remote networks by using IP addressing information. It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It provides a wired or wireless connection between end devices, switches, and routers and in some cases, can regenerate weak signals. It is placed between two or more networks and protects data and equipment from unauthorized access.
It connects networks and forwards traffic to remote networks by using IP addressing information.
A technician is searching through a storage locker and finds a DSL modem. What is the purpose of this device? It is placed between two or more networks and protects data and equipment from unauthorized access. It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It connects networks and forwards traffic to remote networks by using IP addressing information. It connects the network of a user to the digital infrastructure of a phone company, providing always-on service.
It connects the network of a user to the digital infrastructure of a phone company, providing always-on service.
A client packet is received by a server. The packet has a destination port number of 389. What service application is the client requesting? SMB/CIFS LDAP HTTPS SLP
LDAP
A technician is searching through a storage locker and finds a cloud-based network controller. What is the purpose of this device? It transfers small amounts of DC current over Ethernet cables to power low voltage devices such as wireless access points and surveillance cameras. It is a device that allows a network administrator to manage many remote networking devices from a central location. It provides a wired or wireless connection between end devices, switches, and routers and in some cases, can regenerate weak signals. It is a device that can be inserted in the middle of a cable run to add power.
It is a device that allows a network administrator to manage many remote networking devices from a central location.
A technician is searching through a storage locker and finds a PoE injector. What is the purpose of this device? It is a device that allows a network administrator to manage many remote networking devices from a central location. It connects the network of a user to the digital infrastructure of a phone company, providing always-on service. It is a device that can be inserted in the middle of a cable run to add power. It connects a home or business network to a company that provides internet connectivity as well as television signals.
It is a device that can be inserted in the middle of a cable run to add power.
A technician is searching through a storage locker and finds a Powerline networking connector. What is the purpose of this device? It is placed between two or more networks and protects data and equipment from unauthorized access. It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It is a device that uses existing electrical wiring to connect devices and sends data using specific frequencies. It connects networks and forwards traffic to remote networks by using IP addressing information.
It is a device that uses existing electrical wiring to connect devices and sends data using specific frequencies.*
A technician is searching through a storage locker and finds an unmanaged switch. What is the purpose of this device? It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It provides a wired or wireless connection between end devices, switches, and routers and in some cases, can regenerate weak signals. It is placed between two or more networks and protects data and equipment from unauthorized access. It is a device whose sole purpose is to connect end devices and to microsegment a LAN.
It is a device whose sole purpose is to connect end devices and to microsegment a LAN.
A technician is searching through a storage locker and finds a firewall. What is the purpose of this device? It is placed between two or more networks and protects data and equipment from unauthorized access. It is a device that can be inserted in the middle of a cable run to add power. It transfers small amounts of DC current over Ethernet cables to power low voltage devices such as wireless access points and surveillance cameras. It is a device that uses existing electrical wiring to connect devices and sends data using specific frequencies.
It is placed between two or more networks and protects data and equipment from unauthorized access.
A technician is searching through a storage locker and finds an access point. What is the purpose of this device? It is an all-in-one security appliance that includes IDS/IPS functionality as well as stateful firewall services. It provides a wired or wireless connection between end devices, switches, and routers and in some cases, can regenerate weak signals. It uses radio waves to provide network access to wireless devices. It is placed between two or more networks and protects data and equipment from unauthorized access.
It uses radio waves to provide network access to wireless devices.
A client packet is received by a server. The packet has a destination port number of 22. What service application is the client requesting? SMB/CIFS HTTPS SHH SLP
SHH
A client packet is received by a server. The packet has a destination port number of 25. What service application is the client requesting? SMB/CIFS HTTPS SLP SMTP
SMTP
A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? The data flow is being tracked based on the destination MAC address of the technician PC. The data flow is being tracked based on the source port number that is used by each application.* The data flow is being tracked based on the source IP address that is used by the PC of the technician. The data flow is being tracked based on the destination IP address that is used by the PC of the technician.
The data flow is being tracked based on the destination MAC address of the technician PC.
Which network device would be the most appropriate to provide stateful packet filtering, email filtering, and VPN services? router endpoint management server proxy server UTM TPM
UTM
Which smart home wireless technology has an open standard that allows up to 232 devices to be connected? 802.11ac 802.11n Z-Wave Zigbee Explanation: Z-
Z-Wave
Which network device allows administrators to remotely manage many devices through one dashboard interface? cloud-based network controller Power over Ethernet switch that supports VLANs powerline networking
cloud-based network controller
Which type of server would support the SMTP, POP, and IMAP protocols? DHCP email proxy syslog
Which type of connection to the Internet is capable of the fastest transfer rates? ISDN POTS satellite cable fiber
fiber
A network specialist has been hired to install a network in a company that assembles airplane engines. Because of the nature of the business, the area is highly affected by electromagnetic interference. Which type of network media should be recommended so that the data communication will not be affected by EMI? STP coaxial fiber optic UTP
fiber optic
Which pairs of wires change termination order between the 568A and 568B standards? green and orange green and brown blue and brown brown and orange
green and orange
Which internet connection type is an always-on service that uses radio signals sent from a tower to a receiver in a home or business? line of sight wireless satellite hotspot cellular
line of sight wireless
A customer is considering a multipurpose device to create a home network. Which three devices are usually integrated into a multipurpose network device? (Choose three.) web server switch router email server wireless access point print server
switch router wireless access point
Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? repeater hub switch router
switch
Which type of server would be used to keep a historical record of messages from monitored network devices? DHCP DNS print authentication syslog
syslog
What is a common function of a proxy server? to store frequently accessed web pages on the internal network to control who is permitted to access the internal network to detect malicious signatures by monitoring traffic that is entering the internal network to provide access to a shared pool of configurable computing resources
to store frequently accessed web pages on the internal network