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WorksheetsCisco Module 2: Clients and Servers in Computer Networks
Total questions: 88
Worksheet time: 44mins
Which statement best describes the request–response model in computer networks?
Servers only send updates without receiving input
Servers ask for data while clients store it
Clients and servers both broadcast data constantly
Clients ask for services while servers provide them
Which item is a client device rather than a server?
Smartphone used to browse websites
Rack-mounted machine with ECC RAM
Storage array serving many users
Network appliance with redundant power
Which example is client software?
Authentication directory domain controller
Database management back-end service
Web browser such as Chrome or Edge
Mail transfer daemon running headless
What is a primary responsibility of a client in a networked app?
Sending requests and showing results
Enforcing organization-wide permissions
Handling thousands of users concurrently
Hosting massive databases reliably
Clients compared to servers are typically
Optimized for high concurrent load
Less powerful with limited storage
More redundant with dual power
Equipped for nonstop 24/7 duty
Which characteristic makes a server different from a typical client machine?
Lightweight graphics acceleration
High-performance CPUs and large RAM
Touchscreen interface for users
Battery optimized sleep features
Which type of server delivers websites over HTTP or HTTPS?
Web server
File server
Email server
Game server
Which server type primarily handles shared documents on a LAN?
File server
Web server
Email server
Authentication server
Which responsibility is typical for servers during communication?
Issuing controller vibration feedback
Displaying interface widgets on screen
Taking user keyboard and mouse input
Listening for and processing requests
A multiplayer title needs real-time session management for many users. Which server best fits?
Email server
Game server
File server
Authentication server
Place the first action in the communication sequence when a user loads a webpage.
Switch assigns permissions to the server
Server pushes data without any request
Client connects and sends an HTTP request
Client writes to a shared database table
Which statement about server responsibilities is most accurate?
Servers enforce security and send accurate responses
Servers mainly capture clicks and render screens
Servers depend on clients to process requests
Servers store very little and avoid redundancy
Which step happens immediately after a client sends a request in a typical client–server communication sequence?
Client checks local permissions and caches
Client displays the result to the user
Server sends a response back to the client
Server receives the request from the network
Which protocol is responsible for translating a domain name to a server’s IP address?
HTTP handles web page delivery
DNS maps names to IP addresses
SMTP manages outgoing emails
TCP ensures packet order and integrity
In the list of everyday actions, which best illustrates the client–server model in practice?
Connecting two laptops via Bluetooth
Streaming a video from a platform
Copying files over a USB cable
Syncing notes between two phones directly
Which statement best distinguishes Client–Server from Peer-to-Peer (P2P) architecture?
Client–Server uses a central server; P2P is decentralized
Both rely on a single central server by design
P2P is centralized while Client–Server is distributed
Neither architecture involves direct device communication
A school wants easier network management and centralized security policies. Which model should it prefer?
Hybrid with no authentication ever
Ad-hoc mesh with random routing
Peer-to-Peer with direct device links
Client–Server with a managed central server
Which protocol pair correctly matches the common use described?
FTP/FTPS — secure email retrieval
DNS/TCP — mapping webpages to HTML
SMTP/IMAP — sending and receiving email
HTTP/HTTPS — file system backups
During web browsing, which ordered pair of protocols most directly handles naming and reliable delivery?
DNS then TCP/IP for delivery
IMAP then SMTP for routing
TCP/IP then DNS for reliability
FTP then HTTP for naming
Which scenario exemplifies P2P networking as described?
Two gamers connect directly without central servers
An email client retrieves messages from a mail server
A browser requests a page from a hosted website
Students upload homework to the school portal
Which statement best defines a host in a network?
Only machines that store large databases
Only systems that provide user interfaces
Any computer that participates in communication
Any device that forwards packets only
What is the one-sentence takeaway about clients and servers?
Clients provide services while servers request them
Clients ask for services while servers provide them
Servers start conversations while clients wait silently
Servers and clients both control access equally
Which client action is typical during normal operation?
Running headless without a user interface
Initiating requests and sending user input
Processing other users’ permissions centrally
Listening for incoming requests continuously
Which task is the server primarily responsible for?
Displaying results directly to a local user
Serving many clients at the same time
Submitting assignments to another computer
Handling basic on-device errors for the user
Which activity is NOT a client responsibility?
Displaying results to the user
Receiving responses from servers
Storing large persistent databases
Initiating a web request click
Which activity is NOT a server responsibility?
Storing files and databases
Enforcing security and permissions
Relying on a constant user interface
Processing data and business logic
Which example best represents a client role?
File server storing student documents
Game server tracking scores persistently
Authentication server handling login tokens
Phone app sending a data request
Which example best represents a server role?
Game client sending player actions
Web server delivering content pages
Student laptop submitting homework
Browser composing a search query
How do the roles interact during a typical exchange?
Clients control shared resources directly
Clients initiate while servers respond
Servers initiate contact with random users
Servers consume resources from clients
What determines whether a computer is acting as a client or server at any moment?
Its hardware model and brand name
Its current behavior and activities
Its physical location in a rack
Its IP address class and subnet
Which statement corrects a common misconception?
The internet is a single massive computer
Your computer stores the entire website locally
Wi‑Fi is the same thing as the internet
Large services rely on many coordinated servers
Why do large services rarely crash completely from one failure?
Clients retry requests indefinitely by default
Servers stop listening when overloaded
Home routers transparently duplicate traffic
Load balancing and failover add resilience
A laptop browsing the web and later hosting a file share illustrates what principle?
Clients never become servers
One device can play dual roles
Roles rotate on a scheduled timer
Roles are fixed by device purchase
According to the role comparison, which pairing is accurate?
Client handles many users; server is user-facing
Client provides services; server requests
Client listens constantly; server initiates
Client requests services; server provides
Which behavior aligns with servers staying available?
Starts communication without any request
Runs continuously to await clients
Shuts down when inactive overnight
Opens interfaces only when a user logs in
Which statement best defines a peer-to-peer (P2P) network?
All devices are equals without central server
Clients request from a managed central server
A router distributes data to thin clients
A cloud provider allocates virtual servers
In a pure P2P network, each device primarily acts as what?
Both client and server simultaneously
Only a requesting client node
A passive repeater device
Only a centralized server node
Which feature directly contributes to P2P scalability?
Growth requires adding dedicated servers
Bandwidth fixed by central controller
Throughput limited by one master node
Capacity increases as more peers join
What is a common example of a P2P technology students might recognize?
Traditional web hosting cluster
Enterprise directory services
Single mainframe time-sharing
BitTorrent file distribution protocol
Which consequence follows when one peer leaves a healthy P2P network?
All peers must reconnect to router
Entire service becomes unavailable
Network usually keeps working overall
Data routing stops for every client
Which disadvantage makes schools avoid pure P2P deployments?
Harder to monitor and control access
Requires expensive central servers
Consumes excessive static IP blocks
Incompatible with Ethernet switches
Compared to client–server, which pairing is correct?
Security unrelated to architecture choice
P2P stronger security; client–server weaker
P2P weaker security; client–server stronger
Both models equal security by default
Which statement addresses a key misconception about P2P?
P2P requires anonymous dark networks
P2P always violates copyright laws
P2P is a design, not inherently illegal
P2P forbids any client–server mixing
In hybrid P2P systems, what role does the index server play?
Encrypts all files for each peer
Stores locations pointing to resources
Transfers every resource to clients
Authenticates users for a domain
Which description fits a P2P application on an end device?
Only forwards packets like a switch
Runs only a foreground client process
Requires separate hardware appliance
Provides user interface and background service
Why do P2P networks avoid a single point of failure?
Workload and data spread across peers
Traffic forced through one controller
Redundant hardware in one data center
Every request handled by central host
Which situation best illustrates multiple roles on one computer?
Relies on remote server for all tasks
Contains only one client application
Acts solely as a thin terminal display
Runs web, email, and file server together
Which advantage aligns with sharing large files in P2P?
Lower latency for small transactions
Efficient distribution across many peers
Guaranteed uniform service quality
Centralized bandwidth management
Which challenge specifically affects performance in P2P networks?
Determined solely by router firmware
Depends on participating peers' devices
Limited by a single master database
Bound only by backbone provider SLA
Which statement best describes network infrastructure?
The policy rules for organizational security
A cloud service for hosting user accounts
A software suite for encrypting application data
The hardware enabling a stable communication channel
Which three broad categories make up the physical components of a network?
End devices, intermediary devices, media
Users, services, permissions
Hubs, cables, protocols
Servers, clients, applications
Which device is classified as an end device (host)?
Multilayer enterprise switch
IP phone used on a desk
Perimeter firewall appliance
Core network router
What is the primary role of intermediary devices?
Render webpages for client browsers
Provide electrical power to endpoints
Store user files for long durations
Forward and control traffic between hosts
Which example represents network media rather than a device?
A wireless tablet used by a student
A printer connected to a subnet
A solid black line representing LAN cabling
A firewall appliance in a rack
Which symbol in diagrams commonly represents wireless media?
Purple star indicating security events
Orange triangle indicating compute nodes
Green square indicating application logic
Blue waves indicating radio transmission
Which statement about end devices is accurate?
They replace addressing with broadcasting
They operate only at the physical layer
They only relay traffic between networks
They are the source or destination of messages
Which item from the list is an intermediary device, not an end device?
LAN switch used in a wiring closet
Desktop computer on a workstation
TelePresence endpoint in a lab
Wireless tablet in a classroom
Which best identifies messages sent without visible cabling in a home network?
Encrypted solely by application software
Transported only through optical fiber
Stored on servers for later delivery
Transmitted via radio or infrared waves
A host needs to send data to another host. What information must it use to ensure delivery to the correct destination?
The address of the destination host
The hostname of the nearest switch
The SSID of the wireless network
The VLAN number of the router port
Which end device is BEST for a remote farmer to access the internet when cellular coverage exists but wired service is unavailable?
Network printer with Ethernet port
Smartphone with hotspot sharing enabled
Desktop PC without wireless adapter
Telepresence endpoint for video rooms
A technician must connect a small home network that only has a cable modem to the internet and provide Wi‑Fi to users. Which device should the technician bring?
Desktop computer to act as server
Dedicated firewall appliance only
Wireless router with NAT and DHCP
Standalone LAN switch with eight ports
Which role does an Internet Service Provider (ISP) primarily serve for a home network?
Controls all global web content
Hosts every website on demand
Manufactures user end devices
Provides the link to the internet
Which physical medium is the primary carrier for the internet backbone?
Twisted‑pair telephone
Microwave terrestrial hops
Fiber‑optic cable links
Coaxial television lines
What is a common additional service ISPs offer to subscribers beyond internet access?
Custom OS development
Email and web hosting
Home printer repairs
CPU overclock tuning
ISPs interconnect in a hierarchical manner mainly to achieve which networking goal?
Exclusive national control
Permanent peer isolation
Guaranteed zero latency
Shortest path routing globally
Which statement best distinguishes a modem from a router in a home network?
Modem filters malware; router hosts email
Modem switches VLANs; router stores websites
Modem assigns IPs; router modulates signals
Modem converts signals; router forwards packets
Which two items in the diagram would a mobile health worker most likely use to connect while traveling? (Assume portable access is needed.)
Switch with wired media
Tablet with wireless media
Desktop with LAN media
Router with WAN media
Which ISP service is most directly related to placing customer servers in a provider’s facility?
Voice over IP calling
Application hosting pool
POP Internet access
Equipment co‑location service
What does POP most likely refer to in the context of ISP services?
Packet over Phone link
Protocol of Providers
Peer on Premises host
Point of Presence location
Why are submarine fiber‑optic cables critical for global connectivity?
They connect continents undersea
They power coastal routers
They back up email servers
They encrypt all web traffic
Which home connection method typically requires a coaxial drop from a cable provider and a cable modem?
Fixed wireless link
Dial‑up analog service
Fiber GPON service
Cable broadband service
A household wants multiple devices to share one ISP link securely with NAT and Wi‑Fi. Which device is needed in addition to the modem?
A residential router
A packet sniffer
A media converter
An unmanaged hub
Which practice best improves security when using an ISP connection at home?
Use default admin credentials
Broadcast open guest network
Enable WPA3 with strong passphrase
Disable router firewall entirely
Which device is needed to securely connect multiple home computers to an ISP while providing IP addressing and wireless access?
A basic modem directly to ISP
A standalone Ethernet hub
An integrated wireless router
A managed Layer 3 core
What is a key reason a direct PC-to-ISP modem connection is discouraged for home users?
It blocks streaming media entirely
It prevents IP addressing by ISPs
It leaves the computer unprotected online
It requires fiber to the premises
Cable internet typically carries data over which medium to the home?
Twisted-pair telephone line
Dedicated fiber from ISP
Coaxial cable shared with TV
Microwave point-to-point link
DSL requires a special modem primarily to do what?
Split data from voice signals
Encrypt payloads end to end
Convert fiber light to copper
Provide Wi‑Fi to devices
Which statement best contrasts cable and DSL last‑mile media?
Cable uses fiber; DSL uses coax
Cable uses coax; DSL uses phone
Both use coaxial to premises
Cable uses microwave; DSL fiber
In typical ADSL, why might upload speeds be slower than download speeds?
Upstream is metered by ISPs
Line coding only supports half duplex
Separate channels allocate less upstream
Routers throttle uplink by default
For DSL, what factor most affects achievable speed at a residence?
Size of ISP backbone
Number of television sets
CPU speed of home router
Distance from central office
Which technology is most suitable where no wired service exists but you have mobile coverage?
Cable via neighborhood coax
DSL over copper pairs
Dial‑up over analog line
Cellular data connectivity
A drawback of consumer cellular internet plans is commonly what?
Mandatory static IPv6 only
Requires rooftop satellite dish
Bandwidth usage is metered
Needs splitters on phone line
Satellite internet typically requires which condition for a stable link?
Dual‑band mesh inside home
Copper pair loop continuity
Clear line of sight to satellite
Shared neighborhood coax tap
Which connection type is described as always on and delivered by cable TV providers?
Dial‑up telephone access
ISDN Basic Rate Access
Cable broadband service
Leased private circuit
Which home device combination best supports both wired and wireless clients on one ISP line?
Hub with uplink to ISP cloud
Modem plus integrated router
PC and DSL modem only
Switch chained to dial‑up modem
Why can DSL users talk on the phone while browsing the web?
The ISP routes voice separately
Wi‑Fi carries voice instead
DSL uses split channels for voice
Cable TV handles voice traffic
Which option best explains why dial‑up is limited compared to modern broadband?
Analog modems use narrow voice band
Backbone switches restrict traffic
Hubs reduce full‑duplex speeds
Wi‑Fi interference is too high
A teleworker needs reliable access for multiple devices with security features. Which setup fits?
Open hub to ISP without NAT
Single PC connected to ISP modem
Cellular phone tether only forever
Modem with integrated router and AP
