misc

Question 1

What is the Mac OS X function you would use to run first aid, partition a disk, and perform other disk maintenance functions?

Answer 1

Disk Utility

Question 2

On Mac OS X, where would you go to see which device drivers are installed?

Answer 2

System Information Utility

Question 3

What Mac OS X utility allows you to stop a running application?

Answer 3

Command+Option+Esc will open the Force Quit window. Select the defective application and select force quit.

Question 4

A user calls the helpdesk and asks how he can open a terminal session on a Mac OS X system. Where would you direct him to launch a terminal session?

Answer 4

To run a terminal session, open the Utilities folder and select terminal.

Question 5

A user calls the help desk asking how he can find the IP address that has been assigned to his Linux system. He said he is currently at the command prompt and needs the command to see his IP address. What Linux command will display the requested IP address information?

Answer 5

ifconfig command (Interface configuration) with the -a

Question 6

Which transport layer protocol uses windowing for flow control and is considered a reliable connection-oriented protocol?

Answer 6

TCP (transmission control protocol) is considered a reliable connection-oriented protocol.

Question 7

Which transport layer protocol is considered an unreliable, connectionless protocol?

Answer 7

When UDP (user datagram protocol) is used as the transport layer protocol, a connection is not established.

Question 8

In a client server network, this is the mechanism used to ensure that client application data being sent is received by the proper server application.

Answer 8

port number

Question 9

This is the term used to identify a single endpoint of a communication session on a network.

Answer 9

socket number

For example, 66.83.10.24:443 is a socket number that shows a connection established over HTTPS to the IP address.

Question 10

A user calls the help desk and tells you he needs to block access to the Internet to prevent his employees from wasting time surfing the net. He is connected to his firewall and wants to know what port he should block to prevent only HTTP traffic during office hours. What port does he need to block?

Answer 10

HTTP uses a well-known port number of 80

Question 11

What is the default subnet mask for a class C address?

Answer 11

The subnet mask that defines a full class C network is 255.255.255.0, while a full class B subnet mask would be 255.255.0.0.

Question 12

When someone is assigned only the rights and privileges necessary to do her job, this is referred to as ____.

Answer 12

principle of least privilege

Question 13

One form of malware is disguised as an application that users unwittingly download and run, which leads to a virus. This form of malware is referred to as ____.

Answer 13

trojan horse

Question 14

There was a feature of Windows, prior to Windows 7, that would allow a CD, DVD, or thumb drive to automatically launch a program. Due to security issues, this feature was eliminated in releases since Windows 7. How is this feature disabled in Windows Vista?

Answer 14

Disable autorun

Question 15

Which one of these is a form of social engineering where an unauthorized person gains access to a controlled area by following in someone who has legitimate access.

Answer 15

Tailgating

Question 16

You have a sales force that uses mobile phones provided by the company. Knowing that there is secure data on the phones, which of these steps should be taken to prevent data loss if a device is stolen?

Answer 16

Configure the phone with a pattern screenloc

Question 17

Which of these technologies can be used to establish a VPN across the Internet?

Answer 17

PPTP (Point to Point Tunneling Protocol) is used to implement a VPN (Virtual Private Network) across the public internet.

Question 18

This is considered a form of malware, similar to phishing, but is targeting high-level corporate users.

Answer 18

whaling

Question 19

A client calls and tells you her iPhone was stolen and she is very concerned about the integrity of the data she has stored on the phone. When asked, she informs you that the phone is running the latest OS. What advice can you give her?

Answer 19

Any data stored on a phone with iOS 8 or later is automatically encrypted. As long as the user does not have the password for the phone, it should be secure.

Question 20

According to the best practices for malware removal, what is the first step you should perform?

Answer 20

identify malware symptoms
The best practice for the removal of malware is to perform these steps in order: identify malware symptoms, quarantine infected system, disable system restore, remediate infected systems, schedule scans and run updates, enable system restore and educate the end user.

Question 21

A client calls and says she is currently in Recovery Console, but she has forgotten the command used to verify that all system files are working properly. What command should she enter?

Answer 21

sfc /scannow

Question 22

The machine you are currently working on gives you a Missing NTLDR message. What is a possible reason for this?

Answer 22

attempt to boot from another device

Question 23

A user calls the hotline wanting to know where he can view error logs on his Linux system. Where is the most common location for these files on a Linux system?

Answer 23

/var/log

Question 24

A client calls you and says the company is building a new location in a nearby city. There is a large outdoor area that he plans to allow employees to use during breaks, lunches, and special events. He is somewhat concerned that there may not be adequate cell coverage in the area. What tool do you suggest he use to verify this?

Answer 24

cell tower analyzer

Question 25

A user is concerned that applications he may load onto his Android-based cell phone may not be secure. What would you suggest he do to ensure the quality of apps for an Android?

Answer 25

app scanner

Question 26

A user attempted to modify his Linux-based system and now is having numerous problems. In Windows, he could revert to an earlier time with System Restore. What application in Linux would perform the same function?

Answer 26

LVM Snapshots, the Linux Logical Volume Manager, performs functions similar to System Restore in Windows.

Question 27

A client calls stating that he is constantly receiving e-mail responses from e-mail messages he never delivered. What has happened to his system?

Answer 27

Malware has hijacked his e-mail account.

Question 28

A user enters the command line prompt to create a new directory. What is the command to accomplish this?

Answer 28

The command to create a new directory from the command line prompt is MD (MakeDirectory) or MKDIR.

Question 29

A company with a very small local area network has grown to the point where statically assigning IP addresses and other NIC parameters have become impossible to manage. What steps can a network administrator take to simplify the process of configuring network interface cards?

Answer 29

Incorporate a DHCP Server into the network.

Question 30

From the command prompt, a user wishes to concatenate two files, file_a and file_b into a third file, file_c. From the command line, what command would allow this?

Answer 30

type file_a.txt file_b.txt > file_c.txt

Question 31

While in the command line mode, a user finds an old empty directory that is no longer in use. What command would allow him to remove the directory?

Answer 31

To erase a directory, the command is RD; RMDIR will do the same.

Question 32

While in the command line mode, a user moves down two directories to view the contents of the subdirectory. What command would she use to move back up two directories from where she started?

Answer 32

cd ../..

Question 33

As a system administrator, you are responsible for supporting numerous remote systems on the corporate network. What protocol would you use that would allow you to connect to remote systems in order to assist users?

Answer 33

RDP (Remote Desktop Protocol) allows users to remotely log in to computers to support remote users.

Question 34

You have a firewall protecting a network. What port number would you open to allowing SSH access?

Answer 34

SSH (Secure Shell) uses port number 22.

Question 35

You’ve just finished setting up your home server PC, and notice that you are unable to access an Excel spreadsheet on your network. Which step did you likely forget when finalizing your home server?

Answer 35

file sharing

Question 36

After clearing a paper jam out of your inkjet printer, you decide to do full maintenance on the unit. What other maintenance could be done to the printer?

Answer 36

Clean heads, perform calibration and replace cartridges.

Question 37

Which two SATA based formats does a laptop SSD come in?

Answer 37

The two SATA formats used for SSD drives for laptops include a 1.8 inch and 2.5 inch.

Question 38

the laptop power supply converts what to what current

Answer 38

AC to DC

Question 39

What type of adapter could you plug into your laptop to provide an additional port for an ethernet connection?

Answer 39

USB to RJ45 dongle

Question 40

A customer needs help selecting the proper network cabling to run in their store. The distance will be less than 200 feet and the cable should not be prone to electrical interference. Which type of cabling would you suggest?

Answer 40

MMF Since only a short distance needs to be covered, that is less than 300 feet, we can eliminate SMF off the bat. SMF (Single-Mode Fiber) is used for longer cable runs, typically greater than 300 feet in length. The only other cabling scheme that is immune to electrical interference would be MMF (Multi-Mode Fiber).

Question 41

Which sets of connectors are used for twisted pair cabling?

Answer 41

RJ11 and RJ45 are used in twisted pair cabling, commonly for phone lines and ethernet, respectively.

Question 42

Which type fiber connector most closely resembles a BNC connector?

Answer 42

ST | The Straight Tip connector contains a bayonet connection, similar to the one used on BNC connectors.

Question 43

Which type of scale is used to calculate decibel signal strength or signal loss?

Answer 43

logarithmic Changes in decibels are logarithmic in nature. This means that a small change in decibel could potentially result in a very large amount of signal loss or signal strength.

Question 44

In a Windows environment, this protocol is often associated with Active Directory for central management of a user database. What is this protocol called?

Answer 44

LDAP (Lightweight Directory Access Protocol) often works in conjunction with Active Directory to provide user authentication and management in a network. It is the successor to the DAP (Directory Access Protocol).

Question 45

Bob is implementing a new wireless network in his home office and needs assistance in selecting his equipment. He needs something that won’t interfere with his 2.4 GHz phones and that has speed that can reach 54 mbps. Which wireless standard would you suggest to Bob?

Answer 45

802.11a is not in use much in modern times, but it did offer exceptional speeds in the 5 GHz frequency band, at the cost of a smaller range of coverage than some of the other standards.

Question 46

In order for devices on our local home IPv4 network to communicate with other devices on the Internet, our SOHO router must perform what?

Answer 46

NAT (Network Address Translation) allows our private local network IPv4 addresses to be translated into a public IP address capable of connecting over the Internet. This can also be used with IPv6, due to security advantages, although it is less likely.

Question 47

What type of technology supports the use of signaling and bearer channels?

Answer 47

ISDN (Integrated Services Digital Network) uses bearer (B) channels to send data and uses D channels for signaling and control.

Question 48

A network that connects two cities would commonly be known as a ____ network?

Answer 48

Wide Area Networks, also known as WAN, are networks that are connected across long distances, such as city to city or state to state.

Question 49

Switches that are configured to participate in routing decisions are commonly known as what?

Answer 49

This is commonly referred to as a Layer 3 switch, as routing decisions work at Layer 3 of the OSI model (network layer) and switches are normally considered Layer 2 devices.

Question 50

After hearing the fire alarm at work, you see smoke coming from a server in the network room. One of your colleagues is already attempting to subdue it using a bucket of water, when you yell out and tell him to stop. What should he use to put out the fire?

Answer 50

``` a class C fire extinguisher For electrical fires, you should always use special dry fire prevention or extinguishing chemicals. Carbon dioxide is one of those chemicals. ```

Question 51

Jeff is in the backroom at work, cleaning out one of the old printers with a shop vacuum. After walking in, you ask Jeff to stop immediately, informing him he could be damaging the printer components by using the shop vacuum. What type of vacuum should he use to clean out the printer?

Answer 51

When working inside computers or other electrical devices, only specialized vacuums should be used. These devices are specially made so that they do not damage your electrical components.

Question 52

After a recent power outage knocked the company offline for 30 minutes, the executives have been discussing how to keep this from happening again. They bring you in, as an IT expert, to help with the planning and design phases. One executive asks how can you tell how much of a surge can be handled by a surge suppressor. What do you tell him?

Answer 52

joule rating

Question 53

After marketing yourself as an IT consultant, one potential client gives you a call about some network design work at his company. He works in a factory setting, where there are tons of airborne particles constantly afloat. He asks you what special considerations he should make with regard to setting up his computers. What special safety devices would fit his environment well?

Answer 53

Enclosures are specially made housings for computers in warehouse or factory settings.

Question 54

What is the first step when performing proper incident response after an incident report has occurred?

Answer 54

The first step is to confirm that an incident has actually happened, or is taking place.

Question 55

Why is establishing a chain of custody so important after responding to an incident?

Answer 55

to preserve information

Question 56

A new trainee has been reading IT books, as well as company documentation, and has a question with which he needs your help. He wonders why he needs to document everything while troubleshooting and resolving issues. What do you tell him?

Answer 56

to ensure resolution processes are efficient

Question 57

Fred is one of the junior help desk personnel at your company and asks for your help in reviewing troubleshooting theory, since you have passed your CompTIA A+ exam. He is troubleshooting a new customer issue and has established a likely cause, but he is not sure what step to take next. What should Fred do at this point?

Answer 57

Test the theory.

Question 58

Robert is one of the senior IT engineers at your company, and he has been working on a complex customer issue for the majority of the day. After finally implementing the solution, he feels relieved and begins documenting the solution. However, Robert appears to have missed a major step in the troubleshooting theory. Which step did he miss?

Answer 58

verifying system functionality

Question 59

What is the Linux command that allows users to install new software packages?

Answer 59

apt-get | allows a simple way to add new software packages to a Linux system.

Question 60

A user calls the helpdesk wanting a simple method he can use for backing up multiple large directories on a Linux system. What command allows users to back up and compress large directories?

Answer 60

tar -c

Question 61

While in the command line, what is the Linux command to create a new directory (folder)?

Answer 61

mkdir Linux only md is for Windows