CISCO ITEPC Chapter 8 Study Guide
1 What are networks? Systems that are formed by links
2 What is a host? Any device that sends and receives information on the network
3 What is a peripheral? Devices that are connected to hosts
4 What type of resources can be shared on a network?
Services, storage space on removable devices, applications
5
How are network devices linked together?
Copper cabling, fiber-option cabling, wireless connections
6 What are the benefits of networking computers?
1. Lower costs
2. Increased productivity
3. Fewer peripherals needed
4. Increased communication capabilities
5. Avoid file duplication and corruption
6. Centralized administration
7. Conserver resources
7 What manages network resources? A server
8 What is a LAN?
A group of interconnected devices that is under the same administrative control
9 What is a WAN? A network that connects LANs in geographically separated locations for example Internet
10 What is the range for typical WLAN systems? 30 m indoors
11 What are the disadvantages of peer-to-peer networks?
1. No centralized administration
2. No centralized security
3. Network becomes more difficult to manage as number of computers increase
4. No centralized data storage
12
Explain a client/server network.
Client requests information or services from a server. Server provides requested information or service to
client.
13 Who maintains the server in a client/server network?
Network administrator
14 What is a workgroup? A collection of workstations and servers on a LAN that are designed to
communicate and exchange data with one another
15 What is a domain? A group of computers and electronic devices with a common set of rules and
procedures administered as a unit
16 What is bandwidth?
The amount of data that can be transmitted within a fixed time period ans its measured by BPs Bits Per
Seconed
17 What is an IP address?
A number that is used to identify a device on the network
18 What is another name for the physical address?
MAC – Media Access Control
19 Can you change a physical address?
No; unless you replace the NIC
20 What is another name for a logical address? IP
21 What are the two parts of an IP address? network, host
22 What are the five classes of IP addresses? A, B, C, D, E
23 What does DHCP do? Automatically assigns IP addresses to hosts?
24 What is a protocol? A set of rules
25 What is the communication protocol that establishes a connection on the Internet? HTTP
26 What is the protocol that provides services for file transfer and manipulation? FTP
27 What is the protocol used to securely connect to a remote network device? SSH
28 What is used to test connections between computers? Ping
29 What is another use for ping? To find the IP address of a host
30 What are the most common devices on a network?
Computers, hubs, switches, routers, wireless access points
31 What do switches connect? Segments of a network
32 What do routers use to forward frames? IP addresses
33 What do coaxial and twisted-pair cable use to transmit data? Copper
34 What does fiber optic cable use to transmit data? Glass or plastic
35 Why is the cable twisted? To prevent crosstalk
36 What is crosstalk? Noise generated by adjacent pairs of wires in the cable
37 What are the two types of LAN topologies? Physical and logical
38 What is the advantage of a star topology? Easy to troubleshoot
39 What is a benefit of a mesh topology? Every device is connected to every other device
40 Which wireless standard has the longest range? 802.11n
41 Who created the TCP/IP model? Us Department of Defense
42 What are the layers of the OSI model?
Application, Presentation, Session, Transport, Network, Data Link, Physical
43 Which protocol provides source and destination addressing? IP
44 Where are protocol stacks implemented? Hardware, software, or both
45 What is required to connect to the Internet? NIC
46 Where can you find a driver for a NIC?
47
Manufacturer’s website
How do most computers get an IP address?
Automatically from a local DHCP server
48 What command is used to test connectivity? Ping
49 What command is used to find out what your IP address is? ipconfig
50 What is a modem?
An electronic device that transfers data between one computer and another using analog
signals over a telephone line
51 What was the Internet used for in the 1990s? Data transmission
52 What is Bluetooth?
Wireless technology that enables devices to communicate over short distances
53 What does cellular technology enable? The transfer of voice, video and data
54 What is the standard used by the worldwide cellular network?
GSM – Global System for Mobile Communications