Mobile Device & Networking Questions Flashcards
What goes at the end of an Ethernet frame?
FCS (frame check sequence) -
After installing a new firewall, Bran can’t send any emails. What port in the firewall should he check?
Port 25 - SMTP the protocol in charge of sending email.
A user installed a net SOHO router and new wireless NICs to increase his network’s transmission speed from 802.11b to 802.11g. He didn’t change the router from the manufacturer’s default settings. Which is the most secure option that a technician could implement to resolve this issue?
Enable MAC filtering so that only the user’s devices can join the network.
What tool is used to attach RJ-45 connectors to the ends of UTP cable?
A crimper connects RJ-45 plugs to the end of a piece of UTP cable.
What is the best tool for a technician to use to make sure that network wires are securely fastened in a wall jack?
A punch down tool will securely fasten wires to a wall jack or a patch panel.
What is the best tool to verify a cable is plugged into the correct port on the patch panel?
A toner probe is used with a tone generator to determine which cable is plugged into which port.
What policy specifies rules for mobile device usage on company networks?
MDM stands for mobile device management, a policy that defines how devices are used.
This type of digital display does not require backlighting.
OLED - Organic light-emitting diode displays are found in a wide range of devices and do not require backlighting.
What is the least secure type of wireless encryption?
WEP (wireless equivalent privacy) can be cracked in a matter of minutes using current techniques.
What feature enables a SOHO router to pass out IP addresses to network clients?
DHCP is in charge of passing out IP addresses.
A client wants to store all her media in once place and then stream it all to her devices. What should a tech recommend her?
Home server - suits the client’s needs perfectly, enabling her to share all her media from a single machine.
The benefit of MAC filtering in wireless networking is that the network ________
is more secure
What is a short-range RF wireless technology is commonly used to connect a wireless headset to a smartphone?
Bluetooth
What does a touch screen have that a regular display screen doesn’t?
Digitizer is the hardware overlaid on a display screen that enables it to recognize user input from a finger or stylus.
What kind of connector is used to charge and communicate with older iOS devices.
Lightning
Which of these is not a characteristic of Mini PCle card?
Its most common use is for sounds cards.
Which type of LCD screen technology delivers the fastest refresh rate and response time?
Twisted nematic (TN) - TN monitors are thin, clear, and inexpensive to produce and support higher refresh rates than IPS, but they can suffer from uneven backlighting, motion blur, limited viewing angles, poor viewing in sunlight, and input lag.
What would you use to segment a LAN and provide extra ports?
Which internet connection type is a digital connection that runs over standard telephone wiring?
DSL
All cables are plugged into the switch in the network room, however, none of the cables are labeled. Which tool would the technician most likely use to find this cable?
Tone generator sends a tone through the cable that can be detected through a receiver called a probe.
How are WANs identified?
Networks are identified by logical addresses (IP addresses).
The two best options for securing the router from unauthorized access.
To properly secure a wireless router, you’d want to change the router’s default login credentials and also enable encryption for the wireless network.
What is the best tool for a tech to use to make sure that network wires are securely fastened in a wall jack?
A PUNCH DOWN TOOL will securely fasten wires to a wall jack or a patch panel.
A technician is dispatched to a user’s home to secure a wireless network. The SOHO user has only 1 system to connect wirelessly, yet wants to protect their WIi-Fi network from unauthorized use. What will best meet the user’s requirements?
Configure the router to allow access by specific MAC addresses.
What would you use to segment a LAN and provide extra ports?
A managed switch can use VLANs to create network segments.
