CompTIA's new set of 30 questions (obsolete ones deleted)

Which protocol in the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite is 
responsible for reporting errors and providing information about packet delivery?
UDP
IGMP
ARP
ICMP
OMG

When is it necessary to use plenum-rated cable when installing network cabling?
In environments in which there is a risk of electrical interference
Only when installing Ethernet coaxial cable
When required by local building codes
In all network wiring applications

Which network device is used to extend the length of a network segment by simply 
regenerating the data signal?  --obsolete
Switch
Repeater   obsolete
Hub   obsolete
Bridge   obsolete

The Network layer of the Open Systems Interconnect (OSI) model is responsible for 
managing what function?
Establishing and maintaining communication sessions
Providing reliable data transfer and error control
Routing and subnetting
Physical connection to the cable plant

You want to view IP address information on a computer running UNIX.
What should you do?
Run ipconfig.
Run ifconfig.
Run nslookup.
Run nbtstat.

A malicious program that resides in memory, copies itself, and sends copies of 
itself to other network hosts is known as what?
A worm
A virus
A man-in-the-middle
A Trojan
	
Which Transmission Control Protocol/Internet Protocol (TCP/IP) protocol is used to 
transfer e-mail messages and attachments between mail servers?
TFTP
POP3
SNMP
SMTP


File Transfer Protocol (FTP) and Simple Mail Transfer Protocol (SMTP) are implemented 
as which layer of the Open System Interconnect (OSI) model?
Transport layer
Presentation layer
Session layer
Application layer

You need to determine where the route is failing between your computer running 
Windows and a remote host. You need this information as quickly as possible.
What should you do?
Run ping.
Run route.
Run mtr.
Run tracert.
Run away.

Your employees are being targeted by phishing attacks. How can you minimize the 
impact of these attacks? (Choose two.)
Through antivirus software
Through traffic monitoring
Through user education
Through enforced policies and procedures
Through regular computer updates

What protocol is used to find a network device's Media Access Control (MAC) address 
when its IP address is known?
DHCP
FTP
DNS
ARP
ICMP

What category of twisted pair cable should you use when wiring a 10GBaseT Ethernet network?
CAT 3
CAT 6
CAT 5
CAT 5e

You need to extend your office network, but you cannot run new cable in the area. 
Devices should be addressed as part of an existing subnet that is wired as 10BaseT.
What should you do first?
Deploy a wireless access point.
Deploy a bridge.
Deploy a router.
Deploy a basic firewall.

Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are 
implemented at which layer of the OSI model?
Layer 6
Layer 4
Layer 7
Layer 5

You want to retrieve information about TCP/IP network connections and protocol statistics.
What should you do?
Run nbtstat.
Run ipconfig.
Run ping.
Run netstat.

You are setting up a home office with two computers. 
The computers will access the Internet through a cable modem connected to a switch that shares the connection.
You want to protect the computers from unwanted traffic and block access to unused TCP and UDP ports. 
You need to keep the cost and complexity of the network to a minimum.
What should you do?
Use an intrusion detection system (IDS).
Use a network firewall.
Use a host-based firewall on each computer.
Use an intrusion prevention system (IPS).

For what purpose is User Datagram Protocol (UDP) port 67 used?
Mail delivery
Host name resolution
IP address assignment
File transfers

What type of connector is used with RG-58 coaxial cable networking implementations?  --obsolete
SC
BNC
RJ-45
RJ-11


You are connecting your local area network (LAN) to the Internet. 
You need deploy a device to filter traffic between the Internet and your LAN based on TCP and UDP port usage.
What should you do?
Install and configure a hub
Install and configure a router.
Install and configure a bridge.
Install and configure a firewall

You need to determine if your network's Domain Name System (DNS) servers are properly supporting reverse lookup.
What should you do? (Choose two.)
Run the nslookup command.
Run the ping command.
Run the arp command.
Run the rarp command.
Run the nbtstat command.
Run the dig command.

You have three Web servers deployed in your perimeter network. 
You want to limit the traffic between your perimeter network and the Internet to 
secured and unsecured Hypertext Transfer Protocol (HTTP) only.
What should you do?
Deploy an IDS in the perimeter network.
Deploy a personal firewall on each Web server.
Deploy a network firewall between the perimeter network and the Internet.
Deploy an IPS in the perimeter network.

What Transmission Control Protocol (TCP) port is used for secure communications 
between Web clients and Web servers?
443
123
110
80

What type of connector is used with 10BaseT Ethernet networks?
RJ-45
BNC
RJ-11
RS-232

You need to prioritize network traffic so that you can control data transmission rates by port usage. 
What should you use?
Load balancer
Multilayer switch
Bandwidth shaper
Content switch

You add a computer to an existing 10BaseT network that is configured as a single subnet. 
The computer is configured with a static IP address. 
Other computers on the network cannot communicate with the new computer using its IP address. 
The new computer's network interface card and protocol stack appear to be working correctly.
What is most likely wrong? (Choose two).
Problem with contacting a Dynamic Host Configuration Protocol (DHCP) server
Incorrect subnet mask
Incorrect default gateway
Invalid computer name
Invalid IP address

When would you use a port scanner to test your perimeter network?
To see if your proxy server is forwarding traffic
To tell how well your network responds to threats
To identify potential holes in network firewalls
To determine if your network's Web servers are operating properly

When would you use a stateful firewall to filter traffic?
To filter by individual packet headers
To filter by evaluating detailed packet content
To filter by protocol type
To filter by monitoring connections and allowing valid traffic by connection type