DHCP Flashcards
A network has a large number of users who connect for short periods of time and the network needs to maximize the number of devices that can be configured using DHCP. Which of the following should be configured to solve this issue?
Decrease lease time
Which of the following properties of DHCP would a technician use to ensure an IP address is not leased out from the active scope?
reservations
What is the four-letter acronymn for the application-layer protocol that provides an automatic solution for IP address assignment and management?
dhcp
Multiple servers’ IP addresses fall within the DHCP scope assigned by the administrator. Which of the following should be implemented to ensure these static IP addresses are not assigned to workstation
The administrator should create exclusions for the servers IP addresses.
Which protocol does the ping ultilty use?
ICMP
The acronym, MIME, refers to:
Multipurpose Internet Mail Extension
Which statements about SSH and Telnet are true?
SSH is more secure than Telnet because it encrypts data.
SSH uses port 22, and Telnet uses port 23.
Which of the following port numbers is used for SNMP?
161
Port 110 (POP) is what kind of port?
Registered
Which of the following protocols would be used to send email to an email server?
SMTP
Which of the following ports does IMAP use by default?
143
Which of the following ports is the default telnet port?
23
Which of the following protocols are used to receive e-mail from servers? (Select two.)
IMAP
POP
Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages.
True
Server name resolution is done using the:
Domain Name Service
Which of the following is used to register and resolve IP addresses with their plain language equivalents?
DNS server
An administrator is attempting to troubleshoot a program that is unable to resolve IP addresses from FQDNs. Which of the following commands is used to check reverse DNS settings?
dig
When you register a domain, by agreement you must provide at least ___ name servers.
2
The users on your network haven’t been able to connect to the server for 30 minutes. You check and reboot the server, but you’re unable to ping either its own loopback address or any of your client systems. What should you do?
Replace the NIC on the server because it has failed.
A forward lookup zone converts which of the following?
Hostnames to IP addresses
Which of the following network protocols is used to resolve FQDNs to IP addresses?
DNS
Which of the following ports should be allowed through a firewall to allow DNS resolution to occur to an outside DNS server?
53
How long can a DNS client cache a name resoution
Cache time is determined by DNS record
