Net+ CH 1-9 Practice

Which statements are true of DNS? (Choose three.)

• Maps names to IP addresses

• DNS uses ARP to map names to MAC addresses

• DNS uses recursive queries to find domain names and IP addresses

• DNS is used to organize resources

Which networking technology used in LAN's is described as Fast Ethernet and uses two pairs of cabling for transmitting and receiving?

• 1000BaseT

• 100BaseTX

• 100BaseT4

• 100BaseFX

In terms of network security, what is the purpose of hashing?

• Hashing encrypts data

• Hash is a great side dish with eggs

• Hashing decrypts data that was encrypted by hashing

• Hashes are used to verify data integrity

Which TCP ports are commonly used by e-mail clients and servers? (Choose three.)

• 443

• 143

• 110

• 25

Which of the following is a UTP wiring standard?

• 10BaseT runs at 10 megabits per second

• TIA A568

• TIA 568B

• IEEE 802.3

George is unable to surf the Web. No matter what address he enters, he receives the message, "The page cannot be displayed." On George's system, you can ping 64.226.214.168, but when you ping www.totalsem.com, you receive the message "Server not found." What problem does this indicate?

• NIC is malfunctioning

• DHCP server is not working correctly

• DNS server is not working correctly

• Cable is not connected to network hub

You are the network administrator with 15 users on a network. None of them have been able to connect to the server for the last 30 minutes. You try pinging the workstations from the server, but you can't ping any of them or the loopback address, even after a reboot. Which of the following statements must be true?

• Problem with server NIC

• Users need to reboot their systems

• Need to reboot DNS server

• Need to reboot DHCP server

A switch port can BEST be described by which of the following terms?

• Link state

• Distance vector

• Broadcast domain

• Collision domain

What protocol would enable Jill, the administrator of the Bayland Widget Corporation's network, to monitor her routers remotely?

• DNS

• NFS

• FTP

• SNMP

A website just changed its IP address and a user is unable to reach it by typing the site's domain name into their browser. What command can the user run to make the computer learn the website's new IP address?

• ipconfig /updatednscache

• ipconfig /dnsupdate

• ipconfig /all

• ipconfig /flushdns