IT Essentials v7 Chapter Test 6 Study Guide

A wired network is undergoing several changes that could leave it vulnerable to connection by unauthorized devices while the work is in progress. Which two temporary measures would enable the authorized devices to continue to have network access but prevent unauthorized devices from connecting?

-Disable DHCP -Assign static IP addresses to the authorized devices

A user reports that the corporate web server cannot be accessed. A technician verifies that the web server can be accessed by its IP address. What are two possible causes of the problem?

-The DNS server address is misconfigured on the workstation -The web server information is misconfigured n the DNS server

What two default wireless router settings can affect network security?

-The SSID is broadcast -A well-known administrator password is set

A device has been assigned the IPv6 address of 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64. Which is the host identifier of the device?

1000:00d8:0058:00ab

How many bits are used to represent an IPv6 address?

128

What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?

2001:db8:eeff:a::1

How many bits are used to represent a MAC address?

48

What type of cable is used to make Ethernet connections?

Cat 5

The current IP configuration of a small company is done manually and is time-consuming. Because of increased network growth, a technician needs a simpler way for IP configuration of workstations. Which service would simplify the workstation IP configuration task?

DHCP

Which network protocol is used to automatically assign an IP address to a computer on a network?

DHCP

Which protocol dynamically assigns IP addresses to network devices?

DHCP

After having talked to the customer, a network technician suspects that an invalid IP address is the most likely cause of a network issue. Which step of the troubleshooting process does this represent?

Establish a theory of probable cause.

Which protocol is used by ping to test connectivity between network hosts?

ICMP

A computer is assigned an IP address of 169.254.33.16. What can be said about the computer, based on the assigned address?

It cannot communicate outside its own network.

Which filtering method uses the physical address to specify exactly which device is allowed or blocked from sending data on a network?

MAC address filtering

The process that a wireless router uses to translate a private IP address on internal traffic to a routable address for the internet is called

NAT (network address translation)

Multiple users report that the workstations are assigned a 169.254.x.x IP address. The users are able to communicate only between each other. What is a possible solution?

Restart the DHCP server.

A group of users is unable to connect to the network. When testing several of the PCs and issuing the command ipconfig, the technician notices that all of them have an IP address in the 169.254.x.x range. What is the most likely cause of this problem?

The DHCP server is not operational.

What is the problem if a computer automatically configures an IP address in the 169.254.x.x address range?

The DHCP server is unreachable

A PC is not able to connect to a wired network. Pinging the loopback address is successful, but the gateway cannot be reached. On the network switch all the interface lights are on, except for the interface connected to the PC. The LED on the network card is off. What is the most likely cause of this problem?

The network cable is faulty

A technician wishes to update the NIC driver for a computer. What is the best location for finding new drivers for the NIC

The website for the manufacturer of the NIC

Which filtering method uses IP addresses to specify allowed devices on your network?

Whitelisting

What is a result when the DHCP server are not operational in a network?

Workstations are assigned with IP addresses in the 169.254.0.0/16 network

A computer has been assigned an IP address of 169.254.33.16. What command initiates the process of requesting a new IP address?

ipconfig/release

A technician troubleshooting a network problem has used CLI commands to determine that a computer has not been allocated a correct IP address from the DHCP server. Which command can the technician use to solve this problem?

ipconfig/renew

Which network server is malfunctioning if a user can ping the IP address of a web server but cannot ping the web server host name?

the DNS server

A technician is configuring the channel on a wireless router to either 1, 6, or 11. What is the purpose of adjusting the channel?

to avoid interference from nearby wireless devices

Users in a recently installed wireless network are complaining of slow data transfer and frequent loss of connectivity. The technician checks that the wireless security is correctly implemented, and there is no evidence of unauthorized users on the network. Which two problems might the technician suspect?

-There is interference from outside sources -The wireless signal is too weak.

A technician is troubleshooting a problem where the user claims access to the Internet is not working, but there was access to the Internet the day before. Upon investigation, the technician determines that the user cannot access the network printer in the office either. The network printer is on the same network as the computer. The computer has 169.254.100.88 assigned as an IP address. What is the most likely problem?

The computer cannot communicate with a DHCP server