WorksheetsPage 1
Total questions: 55
Worksheet time: 28mins
Refer to the diagram of different devices connected to the internet showing a wireless router/modem and client devices with labeled IP addresses. Which device is labeled with IP address 192.168.0.1?
Wireless router/modem
Desktop PC
Smart TV
Laptop
In the diagram, which device is shown making a video call using Skype and labeled 192.168.0.5?
Smartphone
Smart TV
Laptop
Desktop PC
According to the diagram, which device is labeled 192.168.0.3 and associated with online shopping?
Laptop
Desktop PC
Smartphone
Smart TV
Based on the diagram, which device is labeled 192.168.0.4 and used for watching online video?
Smart TV
Desktop PC
Wireless router/modem
Smartphone
Which device in the diagram is labeled 192.168.0.2 and described as working online using Adobe Creative Cloud?
Desktop PC
Laptop
Smartphone
Smart TV
A VPN is a private network that is constructed within what type of network infrastructure?
A public network infrastructure such as the global Internet
A standalone local network with no internet connection
A peer-to-peer network between two smartphones
A satellite TV broadcast network
According to the passage, how does a telecommuter access a company network using a VPN?
By building a secure tunnel between the telecommuter’s PC and a VPN router in the headquarters
By connecting directly to the company switch without encryption
By sharing files over email attachments
By using a public Wi‑Fi hotspot without authentication
What purpose of a VPN is stated in the passage?
Providing secure, reliable transport over the Internet
Increasing the speed of streaming video
Replacing the need for a wireless router at home
Allowing anonymous social media posts
Who frequently uses VPNs, as described in the passage?
Remote workers or companies with remote offices
Home users streaming entertainment
Gamers on a local network
Public libraries for catalog searches
In a peer-to-peer (P2P) network, what describes the role of each computer?
Each computer acts only as a client
Each computer acts only as a server
Each computer can act as both a server and a client
Only one computer is both a server and a client
Which statement best characterizes the structure of a peer-to-peer (P2P) network?
There are no dedicated servers or hierarchy among the computers
All computers are arranged in a strict hierarchy with one master
A central server controls access for all clients
Only mobile devices can join the network
Which software is an example of peer-to-peer (P2P) technology?
Skype
Microsoft Word
Adobe Photoshop
Google Sheets
Based on the illustrated peer-to-peer network of four Windows 8.1 computers, how many peers are shown as connected?
2
3
4
5
From the illustrated peer-to-peer network of Windows 8.1 computers, which IP address appears on one of the peers?
192.168.0.1
10.0.0.5
172.16.1.100
192.168.1.4
What is a computer communication protocol described as in the passage on Computer Communication Protocol?
A set of rules computers must follow to communicate with each other
A programming language used to build network applications
A physical device that connects computers together
An encryption method for securing passwords
According to the description of TCP/IP, what is it used for?
Communication between computers on the network
Communication only between printers and routers
Communication between people via email
Communication only within a single computer’s operating system
What does TCP/IP stand for?
Transmission Control Protocol / Internet Protocol
Transport Communication Process / Internal Path
Telecommunication Protocol / Integrated Platform
Terminal Connection Program / Internet Pathway
Within the TCP/IP standard, which protocol is for communication between applications?
TCP (Transmission Control Protocol)
IP (Internet Protocol)
ICMP (Internet Control Message Protocol)
DHCP (Dynamic Host Configuration Protocol)
Within the TCP/IP standard, which protocol is described as simple communication between applications?
UDP (User Datagram Protocol)
IP (Internet Protocol)
ICMP (Internet Control Message Protocol)
DHCP (Dynamic Host Configuration Protocol)
Within the TCP/IP standard, which protocol handles communication between computers?
IP (Internet Protocol)
TCP (Transmission Control Protocol)
UDP (User Datagram Protocol)
DHCP (Dynamic Host Configuration Protocol)
Within the TCP/IP standard, which protocol is for errors and statistics?
ICMP (Internet Control Message Protocol)
TCP (Transmission Control Protocol)
IP (Internet Protocol)
UDP (User Datagram Protocol)
Within the TCP/IP standard, which protocol is for dynamic addressing?
DHCP (Dynamic Host Configuration Protocol)
ICMP (Internet Control Message Protocol)
TCP (Transmission Control Protocol)
UDP (User Datagram Protocol)
According to the section on TCP for communication between applications, what does TCP set up after the handshake between two applications?
Full-duplex communication
A broadcast to all network devices
A dedicated circuit on the router
A one-way datagram
In the context provided, what best describes full-duplex communication under TCP?
It occupies the communication line between the two computers until it is closed by one of the two applications
It sends messages only in one direction at a time to reduce congestion
It guarantees that packets always follow the same path
It prevents any other applications from using the network while active
How is UDP characterized compared with TCP in the provided text?
Similar to TCP, but simpler and less reliable
Completely different from TCP and always more reliable
Identical to TCP with added encryption
A physical medium rather than a protocol
Which statements about IP being connection-less are correct according to the passage? Select all that apply.
IP is a connection-less communication protocol
IP does not occupy the communication line between two computers
IP reduces the need for network lines
Each line can be used for communication between many different computers at the same time
IP requires a dedicated line between every pair of communicating computers
How are messages handled with IP according to the text?
They are broken up into small independent packets and sent between computers via the Internet
They are streamed as a single continuous circuit-switched call
They are encrypted into a single frame for the entire session
They are compressed into one large packet and delivered at shutdown
What is IP responsible for with respect to packets?
Routing each packet to the correct destination
Assigning user passwords to sessions
Maintaining a permanent circuit between endpoints
Displaying error messages to applications
When an IP packet arrives at a router, what is the router responsible for according to the passage on IP Routers?
Routing the packet to the correct destination directly or via another router
Encrypting the entire packet payload by default
Converting the packet to an audio signal
Assigning a new MAC address to the sender
Which factor is cited as influencing the path a packet may follow, causing it to differ from other packets of the same communication?
Traffic volume
Keyboard layout
Monitor resolution
File system type
Which technology carries data on the cable network using DOCSIS (Data over Cable Service Interface)?
Telephone-line DSL
Cable modem with DOCSIS
Non‑terrestrial satellite link
Fiber‑optic backbone
According to the notes, what speed range is stated for cable modem high‑speed networking?
1 Mbit/s to 10 Mbit/s
4 Mbits/s through 100 Mbits/s
100 Mbit/s to 1 Gbit/s
256 kbit/s to 2 Mbit/s
In ADSL (Asymmetric Digital Subscriber Line), how do download and upload speeds compare?
They are the same speed (symmetric)
Download speed is slower than upload
Download speed is faster than upload (asymmetric)
Speeds are fixed at 56 kbit/s
Which medium does DSL use for connectivity, as stated in the notes?
Coaxial cable from the cable TV network
Traditional telephone lines
Microwave line‑of‑sight links
Dedicated fiber to every home
What distance limitation from the central office is listed for DSL?
1,000 feet
10,000 feet
25,000 feet
100,000 feet
Which pair of rates matches the listed ADSL speeds?
24 Mbits/s upstream, 3.5 Mbits/s downstream
3.5 Mbits/s downstream, 24 Mbits/s upstream
24 Mbits/s downstream, 3.5 Mbits/s upstream
56 kbit/s downstream, 320 kbit/s upstream
What is stated about SDSL (Symmetric Digital Subscriber Line) in the notes?
It is globally standardized
It was never standardized
It replaced DOCSIS
It requires fiber optics
What speed range is given for VDSL (Very High Bitrate DSL)?
4 Mbits/s through 100 Mbit/s
128 kbit/s through 1 Mbit/s
100 Mbit/s through 1 Gbit/s
1 Mbit/s through 10 Mbit/s
Which statement matches the description of dial‑up networking in the notes?
Uses digital fiber with gigabit speeds
Uses voice telephone lines with analog limited frequency response
Uses coaxial cable and DOCSIS
Uses satellite with 250 ms latency
Which feature is listed for fiber optics in the notes?
Relatively slow throughput
Converged services including video, voice, and data
Requires modems limited to 56 kb/s
Primarily for legacy systems
Which characteristic is given for satellite networking?
Low cost relative to terrestrial networking
High latency around 250 ms up and 250 ms down
Downstream 100 Mbit/s and upstream 50 Mbit/s by default
Requires telephone lines
According to the notes, what are the listed downstream and upstream rates for satellite networking?
5 Mbit/s downstream and 1 Mbit/s upstream
1 Mbit/s downstream and 5 Mbit/s upstream
24 Mbit/s downstream and 3.5 Mbit/s upstream
56 kbit/s downstream and 320 kbit/s upstream
What does ISDN BRI (basic rate interface) consist of as listed in the notes?
Two 64 kbit/s bearer channels (B) and one 16 kbit/s signaling (D) channel
Thirty 64 kbit/s bearer channels (B) only
One 64 kbit/s bearer channel (B) and one 16 kbit/s D channel
Twenty‑three bearer channels without signaling
What is stated about ISDN PRI in the notes?
It is delivered only over fiber
It is delivered over T1 or E1
It requires DOCSIS
It is limited to residential dial‑up use
How is ISDN commonly used according to the notes?
As a home Wi‑Fi standard
As connectivity from the PSTN to large phone systems (PBX)
As a satellite uplink protocol
As a replacement for fiber optics
Direction: Encircle the best answer. It is a group of computer systems and other computing hardware devices that are linked together through communication channels to facilitate communication and resource-sharing among a wide range of users.
Ethernet
Internet
computer network
wireless router
Direction: Encircle the best answer. Usually a small network constrained to a small geographic area.
wide area network (WAN)
metropolitan area network (MAN)
local area network (LAN)
Personal Area Network (PAN)
Direction: Encircle the best answer. Is a hybrid between a LAN and a WAN; it connects two or more LANs in the same geographic area.
metropolitan area network (MAN)
Personal Area Network (PAN)
wide area network (WAN)
local area network (LAN)
Direction: Encircle the best answer. Is a computer network used for communication among computer devices, including telephones and personal digital assistants, in proximity to an individual's body.
metropolitan area network (MAN)
Personal Area Network (PAN)
local area network (LAN)
wide area network (WAN)
Is a computer network that covers a broad area
Personal Area Network (PAN)
local area network (LAN)
storage area network (SAN)
wide area network (WAN)
Is a dedicated storage network that provides access to consolidated, block level storage.
storage area network (SAN)
wide area network (WAN)
local area network (LAN)
Personal Area Network (PAN)
It is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide.
The Ethernet
The Internet
wireless router
VPN
It is private network that is constructed within a public network infrastructure such as the global Internet
VPN (Virtual Private Network)
client/server
Category of Network
Peer to Peer Network
Refers to the concept of sharing the work involved in processing data between the client computer and server computer.
virtual Private Network
windows server
client/server
Peer To Peer Network
There are no dedicated servers or hierarchy among the computers.
virtual Private Network
wireless router
client/server network
Peer to Peer Network
