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Questions and Answers
Which two pairs of wires change termination order between the 568A and 568B standards?
Which two pairs of wires change termination order between the 568A and 568B standards?
What is the role of the well-known port number 68 in networking?
What is the role of the well-known port number 68 in networking?
What is the maximum number of devices that a Bluetooth device can connect to simultaneously?
What is the maximum number of devices that a Bluetooth device can connect to simultaneously?
Which feature distinguishes a fiber optic medium from other forms of network media?
Which feature distinguishes a fiber optic medium from other forms of network media?
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Which type of server would keep a historical record of messages from monitored network devices?
Which type of server would keep a historical record of messages from monitored network devices?
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What is the purpose of a wireless NIC?
What is the purpose of a wireless NIC?
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What command is commonly used to resolve domain name resolution issues?
What command is commonly used to resolve domain name resolution issues?
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What does an IP address in the range of 169.254.x.x indicate about a computer?
What does an IP address in the range of 169.254.x.x indicate about a computer?
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Which action may allow customers to access a web server from remote locations?
Which action may allow customers to access a web server from remote locations?
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Which protocol is responsible for dynamically assigning IP addresses to network devices?
Which protocol is responsible for dynamically assigning IP addresses to network devices?
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What could be a likely cause if a workstation can print to a LAN printer but cannot access the Internet?
What could be a likely cause if a workstation can print to a LAN printer but cannot access the Internet?
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What does it mean if a wireless router has the IP address 192.168.0.1?
What does it mean if a wireless router has the IP address 192.168.0.1?
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Which Windows network protocol is considered obsolete and insecure, especially on systems earlier than Windows 2000?
Which Windows network protocol is considered obsolete and insecure, especially on systems earlier than Windows 2000?
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What security technique can simplify access to a server in a small office without a costly DMZ or hardware firewall?
What security technique can simplify access to a server in a small office without a costly DMZ or hardware firewall?
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What is the purpose of selecting a channel (1, 6, or 11) on a wireless router?
What is the purpose of selecting a channel (1, 6, or 11) on a wireless router?
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How many bits does an IPv6 address contain?
How many bits does an IPv6 address contain?
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Which service would simplify workstation IP configuration in a growing network compared to a manual approach?
Which service would simplify workstation IP configuration in a growing network compared to a manual approach?
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Which technology must a technician disable on a wireless access point to prevent devices from adding themselves to the network without configuration?
Which technology must a technician disable on a wireless access point to prevent devices from adding themselves to the network without configuration?
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What does the IP address 169.254.33.16 indicate about the computer's network communication ability?
What does the IP address 169.254.33.16 indicate about the computer's network communication ability?
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What technology is essential for IP phones to function in a network environment without separate power sources?
What technology is essential for IP phones to function in a network environment without separate power sources?
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Which physical layer medium is utilized by DSL for high-speed data transmission?
Which physical layer medium is utilized by DSL for high-speed data transmission?
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Which type of network requires an active, powered TAP (test access point) to capture network traffic?
Which type of network requires an active, powered TAP (test access point) to capture network traffic?
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What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?
What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?
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What is the most likely cause of PCs showing IP addresses in the 169.254.x.x range?
What is the most likely cause of PCs showing IP addresses in the 169.254.x.x range?
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Which network protocol is used to automatically assign an IP address to a computer on a network?
Which network protocol is used to automatically assign an IP address to a computer on a network?
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What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?
What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?
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Which two default wireless router settings can affect network security? (Choose two.)
Which two default wireless router settings can affect network security? (Choose two.)
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Which filtering method uses the physical address to specify exactly which device is allowed or blocked from sending data on a network?
Which filtering method uses the physical address to specify exactly which device is allowed or blocked from sending data on a network?
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What could cause a workstation to fail to communicate with the network after being moved floors?
What could cause a workstation to fail to communicate with the network after being moved floors?
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What is the most likely problem if a computer on the same network cannot access the Internet or a network printer and has an IP address of 169.254.100.88?
What is the most likely problem if a computer on the same network cannot access the Internet or a network printer and has an IP address of 169.254.100.88?
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Study Notes
Module 5
- Network Device Regeneration: A hub regenerates the data signal without segmenting the network.
- Wide Area Network (WAN): A WAN is needed for connecting branch offices to corporate headquarters across geographical distances.
- Dynamic Host Configuration Protocol (DHCP): DHCP automatically assigns IP addresses to devices on a network.
- Intrusion Detection System (IDS): IDS passively monitors network traffic to detect potential attacks.
- Transport Control Protocol (TCP) and User Datagram Protocol (UDP): TCP and UDP are transport layer protocols in the TCP/IP model.
- Personal Area Network (PAN): A PAN connects devices like printers, keyboards, and mice to an individual host.
- Wi-Fi Standards (2.4 GHz): 802.11b, 802.11g, and 802.11n operate in the 2.4GHz frequency range.
- Network Media: Copper and fiber optic cables are common network media.
- HTTP Port: Port 80 is used for HTTP packets.
Module 6
- Multipurpose Network Device Components: A multipurpose network device typically integrates a switch, router, and wireless access point.
- Power over Ethernet (PoE): PoE powers devices like access points and IP phones.
- Patch Panel: A patch panel terminates cable runs and keeps them secure.
- Signal Interference Reduction: Shielded Twisted-Pair (STP) cable reduces radio frequency interference (RFI) and electromagnetic interference (EMI) more effectively than Unshielded Twisted-Pair (UTP) cable.
- 568A/568B Wire Pairs: The green and orange wires change termination order between the 568A and 568B standards.
- Proxy Server Function: A proxy server stores frequently accessed web pages on the internal network.
- DHCP Client Port: Port 68 is used by the DHCP client protocol.
Module 7
- TCP/IP Model Layers (Top to Bottom): Application, Transport, Internet, Network Access
- LEO Satellite Service: LEO satellites provide high-bandwidth, low-latency internet access compared to traditional satellite.
- Email Server Protocols: SMTP, POP, and IMAP are protocols used with email servers.
- Modem Connector: An RJ-11 connector is used with analog modems.
- Wide Area Network (WAN): A WAN connects multiple networks that are geographically separated.
- PoE Standard: The IEEE 802.3af standard is used for PoE.
- Unified Threat Management (UTM): A UTM device provides stateful packet filtering, email filtering, and VPN services.
- Bluetooth Devices: A Bluetooth device can connect to 7 devices simultaneously.
- Access Point Function: An access point provides wireless connectivity to users.
- DSL Modem: If a user connects to an ISP through a telephone network, a DSL modem is required.
- IPv6 Address: A device with the IPv6 address 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64 has a network identifier of 2001:0db8:cafe:4500.
- Network Filtering: Whitelisting uses IP addresses to specify allowed devices on a network.
Module 8
- NetBIOS Description: NetBIOS is an obsolete and insecure Windows network protocol.
- DNS Server Issue: If a user can ping the IP address of a web server but cannot ping the web server's hostname, the DNS server is malfunctioning.
- DHCP Server Issues: If a computer is assigned an IP address in the 169.254.x.x range, the DHCP server is unreachable.
- Network Troubleshooting: Network issues, such as a user reporting that the workstation cannot connect, might be caused by static IP addresses.
- DHCP Server Failure, IP Address Assignment, and Gateway Issues: Workstations may obtain IP addresses from 169.254.0.0/16 if DHCP servers are not operational, or the network's gateway settings may not be configured properly.
- Network Device Filtering: Using MAC address filtering can control which devices access a specific network.
General
- Laptop Component Throttling: Laptops' CPUs use throttling to reduce power consumption and heat.
- Laptop Motherboard Form Factor: Laptop motherboard form factors vary by manufacturer.
- SO DIMM: SODIMM is a small form factor memory type suitable for laptops.
- Geocaching and Geotagging: GPS signals and cellular/Wi-Fi networks are used in geocaching and geo-tagging.
- Email Protocol POP3: POP3 downloads email to a client and deletes it from the server.
- Laptop Cleaning: Mild cleaning solution and cotton swabs are useful for cleaning laptops.
- Laptop Input Devices: Web camera, fingerprint reader, and touchpad are typical laptop input devices.
- Laptop Screen Issues: A laptop's screen could not display due to sleep mode, damaged screen cutoff switch.
- Laptop Memory and FRU: Pressing outward on the clips removes the SODIMM memory modules; a display is a replaceable unit (FRU).
- Mobile Device Connectivity: Wi-Fi and cellular are common mobile device connectivity methods;
- Wireless Devices: Devices commonly connect wirelessly using a wired network.
- High-Speed Data Communications: Digital Subscriber Line (DSL) uses telephone lines for high-speed data communications.
- Interoperability Settings: For a WLAN with both old and new devices, the best interoperability choice is an 802.11n device.
- FTP Servers: FTP servers are used for two-way communication, transferring files, and receiving commands.
- Wireless Router Features: Broadcast SSID and well-known admin password can negatively affect network security.
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Description
Test your knowledge of key networking concepts including WANs, DHCP, and the differences between TCP and UDP. This quiz will challenge your understanding of network devices, media, and protocols essential for modern networking. Perfect for students or professionals looking to reinforce their networking skills.
