Chapter 6.1

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? (Choose two.)

• Disable DNS.

• Disable SSID broadcast.

• Disable DHCP.

• Subnet the network.

• Assign static IP addresses to the authorized devices.

What two default wireless router settings can affect network security? (Choose two.)

• The SSID is broadcast.

• MAC address filtering is enabled.

• WEP encryption is enabled.

• The wireless channel is automatically selected.

• A well-known administrator password is set.

A network technician is checking a computer to see if the DHCP client is working correctly. The technician issues the ipconfig /all command. Which two parameters should the technician review? (Choose two.)

• description

• default gateway

• host name

• media state

• subnet mask

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.

• The IP default gateway on the computer is incorrect.

• The network interface card driver needs to be updated.

• The router that connects this network to other networks is down.

Port triggering has been configured on a wireless router. Port 25 has been defined as the trigger port and port 113 as an open port. What effect does this have on network traffic?

• Any traffic that comes into port 25 allows outgoing port 113 to be used.

• All traffic that is sent into port 25 to the internal network will also be allowed to use port 113.

• Any traffic that is using port 25 going out of the internal network will also be allowed to transmit out port 113.

• All traffic that is sent out port 25 will open port 113 to allow inbound traffic into the internal network through port 113.

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?

• APIPA

• DHCP

• DIPS

• ICMP

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

• FTP

• DHCP

• ICMP

• SMTP

• APIPA

What security technique could provide secure access to a server located in a small office without the expense of implementing a DMZ or purchasing a hardware firewall?

• implement hash encoding for all wireless devices

• implement MAC address filtering

• implement port forwarding

• implement basic security on all wireless access points

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

• 2001:db8:eeff:a::1

• 2001:db8:eeff:a:1

• 2001:db8:eeff:a::0001

• 2001:db8:eeff:a:::1

What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?

• /8

• /16

• /24

• /32