Session 4 Flashcards
(39 cards)
What is UDP specifically used for in DNS? Choices: A - DNS lookup B - DNS security C - DNS requests D - DNS connections
C - DNS requests
In a UDP header sent to a client from a DNS server, what will be the destination port? Choices: A - 53 B - 1024 C - The source port of the UDP header on the clients request D - The destination port of the UDP header on the clients request
C - The source port of the UDP header on the clients request
When DNS is not working on a client machine, what is the best first option for troubleshooting on the client machines? Choices: A - Reset the DNS server B - Restart the DNS service C - Set the DNS address manually D - Make sure DNS is configured properly
D - Make sure DNS is configured properly
When multiple users get an error message stating that DNS cannot resolve an address, which first steps can be taken to attempt to fix the problem? Choose two answers. Choices: A - Reboot the DNS server B - Reboot each client machine C - Restart the DNS service on the server D - Restart the DNS service on each client machine
A - Reboot the DNS server C - Restart the DNS service on the server
Which command will exclude the first 25 assignable IP addresses in a 192.168.1.0/24 network from a DHCP pool? Choices: A - ip dhcp excluded address 192.168.0.0 192.168.0.24 B - ip dhcp excluded address 192.168.0.1 192.168.0.25 C - ip dhcp excluded-address 192.168.0.0 192.168.0.24 D - ip dhcp excluded-address 192.168.0.1 192.168.0.25
D - ip dhcp excluded-address 192.168.0.1 192.168.0.25
Which command is used to start the setup of a DHCP pool? Choices: A - network B - dhcp server C - ip dhcp pool D - ip excluded-address
C - ip dhcp pool
Which command will set an IP address range for a DHCP server to include the addresses of 192.168.0.21 to 192.168.0.254? Choices: A - network 192.168.0.0 192.168.0.255 B - network 192.168.0.0 255.255.255.0 C - network 192.168.0.21 192.168.0.254 D - network 192.168.0.21 255.255.255.0
B - network 192.168.0.0 255.255.255.0
Which optional IP addresses can be set up as part of a DHCP server configuration? Choose two answers. Choices: A - DNS server B - DHCP server C - Default gateway D - Machine IP address
A - DNS server C - Default gateway
Which command sets up a router as a DHCP relay agent? Choices: A - ip dhcp relay B - ip dhcp-relay C - ip helper address D - ip helper-address
D - ip helper-address
Which command sets a default gateway in a DHCP pool? Choices: A - default router B - default-router C - default gateway D - default-gateway
B - default-router
Which command is entered before the command to change the DNS server address within a DHCP pool? Choices: A - ip dhcp pool B - change dhcp pool C - change dns-server D - change dns-address
A - ip dhcp pool
A Windows machine is reporting an IP address of 169.254.200.201. What type of IP address does this machine have? Choices: A - DHCP B - Static C - Dynamic D - Automatic Private IP Address
D - Automatic Private IP Address
Which is a common step missed in setting up DHCP on a Cisco router? Choices: A - Not starting a pool B - Not setting an IP address range C - Not setting an excluded address range D - Not setting the proper subnet for the pool
C - Not setting an excluded address range
A router is set with the NTP protocol to get its time from another NTP router and be able set the time on devices connected to it. Which roles does this router have? Choose two answers. Choices: A - NTP Relay B - NTP Agent C - NTP Client D - NTP Server
C - NTP Client D - NTP Server
Which command will set the time on a Cisco router? Choices: A - NTP B - time C - clock D - set time
C - clock
What is the purpose of setting a stratum number when adding the NTP server role to a router? Choices: A - To set the time zone B - To find the nearest atomic clock C - To set multiple routers up to use the same time zone D - To set priority on which router’s clock should be used
D - To set priority on which router’s clock should be used
Which command adds the NTP client role to a Cisco device? Choices: A - ntp B - ntp client C - ntp server D - ntp master
C - ntp server
Router1 has been set up as an NTP client. The same router needs to relay the NTP information from the NTP server (Router2) to the router’s connected clients. Which command needs to be entered on Router1 to fulfill this need? Choices: A - ntp B - ntp client C - ntp server D - ntp master
D - ntp master
Which number sets are usable for standard ACLs? Choose two answers. Choices: A - 1-99 B - 100-199 C - 1300-1399 D - 2600-2699
A - 1-99 C - 1300-1399
Which command accurately denies a class C subnet with a subnet ID of 10.1.34.0 access to a router on an ACL with a number of 12? Choices: A - access-list 12 deny 10.1.34.0 0.0.0.255 B - access-group 12 deny 10.1.34.0 0.0.0.255 C - access-list 12 deny 10.1.34.0 255.255.255.0 D - access-group 12 deny 10.1.34.0 255.255.255.0
A - access-list 12 deny 10.1.34.0 0.0.0.255
An administrator wants to make sure devices not denied using an ACL can access a router. Which command should be used at the end of the ACL? Choices: A - deny none B - permit all C - permit any D - permit explicit
C - permit any
A standard ACL with a number of 12 has been configured. Which command will enable the ACL on an interface for inbound connections? Choices: A - ip access group 12 B - ip access-group 12 C - ip access group 12 in D - ip access-group 12 in
D - ip access-group 12 in
Which command will show any access groups enabled on interface s0/1? Choices: A - show ip access-list int s0/1 B - show startup-config int s0/1 C - show running-config int s0/1 D - show ip access-groups int s0/1
C - show running-config int s0/1
Which command will show the access list(s) enabled on interface s0/1? Choices: A - show ip int s0/1 B - show ip int brief s0/1 C - show ip access-list int s0/1 D - show ip access-groups int s0//1
A - show ip int s0/1
