Part 7 Network Services Lesson 23 - 24

Question 1

What’s the relationship between clients and servers as it relates to network service access?

Answer 1

Client software is used to access network services provided by server software. The connection is established using a common network protocol known by both the client and server software. Thus, the client and server software can be from different sources

Question 2

What’s the relationship between a network service and a network port?

Answer 2

Network services are established using a common network protocol. The protocol specifies which TCP or UDP port number is used for communications.

Question 3

What’s the primary interface for configuring network service applications?

Answer 3

Internet Accounts preference

Question 4

How does OS X use dynamic network service discovery protocols to access network services?

Answer 4

Devices providing a network service advertise their availability via a dynamic network service discovery protocol. Clients looking for services request and receive this information to provide the user with a list of available network service choices.

Question 5

Which two dynamic network service discovery protocols are supported by OS X including two others

Answer 5

Bonjour and Server Message Block (SMB) also NetBIOS and WINS

Question 6

Which six network file services can you connect to from the “Connect to Server” dialog in the Finder?

Answer 6

1) SMB/CIFS - Server Message Blocks/Common Internet File System
2) SMB2/SMB3
3) AFP - Apple File Protocol
4) Network File System (NFS)
5) Web-based Distributed Authoring and Versioning (WebDAV)
6) File Transfer Protocol (FTP) network file services

Question 7

How are items populated inside the Network folder in the Finder?

Answer 7

By using information provided by the dynamic network services discovery protocols. Computers providing services appear as resources inside the Network folder, and service discovery zones or workgroups appear as folders. Any currently connected servers also appear in the Network folder.

Question 8

Which two methods can be used to automatically connect a network share?

Answer 8

1) drag the share from the Finder to the user’s login items in Users & Groups preferences.
2) drag the share to the right side of the user’s Dock, and it will automatically connect when the user clicks the share’s icon in the Dock.

Question 9

What are three common troubleshooting techniques for issues involving failure to connect to network services?

Answer 9

1) Review Network preferences, 2) Review the Network Utility statistics
3) Attempt to connect to different network services.

Question 10

How can you verify that a specific network service is available from a service provider?

Answer 10

1st, use the Network Utility Ping tab to verify basic connectivity. 2nd, use the Network Utility Port Scan tab to verify that the specific service port(s) are open. You should always limit the port scan to the specific ports required for the network service you’re testing.

Question 11

What are some known issues that arise when connecting to network file services?

Answer 11

Files with metadata may cause problems for NFS or WebDAV network file systems.
Also, avoid AFP 2 services provided by Windows file servers.

Question 12

Which 10 sharing services can OS X provide?

Answer 12

1) DVD or CD sharing,
2) Screen Sharing,
3) File Sharing,
4) Printer Sharing,
5) Scanner Sharing,
6) Remote Login,
7) Remote Management (ARD),
8) Apple Events,
9) Internet Sharing,
10) Bluetooth Sharing.

Question 13

What’s the security risk of enabling client sharing services?

Answer 13

an unauthorized user can control your Mac and execute unwanted applications or processes.

Question 14

Which application can provide on-demand screen sharing

even when the Screen Sharing service isn’t enabled?

Answer 14

Messages application

Question 15

What’s AirDrop, and how do you know if a specific Mac supports it?

Answer 15

Quick and easy method to share files locally via Wi-Fi.

Verify that a Mac supports AirDrop from the Finder Go menu.

Question 16

If other devices with AirDrop enabled aren’t appearing in the AirDrop browser, which two settings on a Mac can you change to potentially make more devices appear?

Answer 16

1) expand AirDrop discovery from only users in your Contacts to everyone within AirDrop range.
2) revert to the previous discovery method, which allows your Mac to discover older Mac computers and/or Mac computers running previous versions of OS X.

Question 17

In what primary way does the OS X built-in firewall differ from a traditional network firewall?

Answer 17

With the firewall built into OS X, connections are allowed or denied on a per-application basis. This is unlike traditional network firewalls, where access rules are based on network service port numbers.

Question 18

Which optional firewall settings are available?

Answer 18

enable you to control whether signed applications are automatically allowed through the firewall, control the list of allowed (or denied) applications, and enable stealth mode (which means your Mac won’t respond to any unsolicited connections).