Network Components

• Computer Science
• Secondary Education

How many layers does the DoD model consist of?

1. Four layers
2. Six layers
3. Five layers
4. Seven layers

Which protocol resolves human-readable domain names to IP addresses?

1. SMTP
2. DNS
3. HTTP
4. Ping

Which protocol facilitates email transmission?

1. FTP
2. HTTP
3. DHCP
4. SMTP

Which protocol is used for secure web communication?

1. FTP
2. DNS
3. HTTPS
4. SMTP

Which protocol is connectionless and does not guarantee delivery of packets?

1. SMTP
2. FTP
3. TCP
4. UDP

Which protocol is faster for real-time applications but less reliable?

1. TCP
2. SMTP
3. FTP
4. UDP

Which protocol provides a connection-oriented communication?

1. UDP
2. TCP
3. HTTP
4. IP

What protocol is used by
IPv4 to find the MAC address?

1. ARP
2. ICMPv6
3. ND
4. UTP

What is the maximum number of unique addresses that can be represented by IPv4?

1. About 12.4 billion
2. About 8.6 billion
3. About 1.7 billion
4. About 4.3 billion

Which of the two IP versions has better support for security features?

1. IPv4
2. Both have the same level of security features.
3. IPv6
4. Neither IPv4 nor IPv6 support security features.

What is the primary difference between IPv4 and IPv6?

1. IPv4 uses 32-bit addresses, while IPv6 uses 128-bit addresses.
2. IPv4 uses 64-bit addresses, IPv6 uses 32-bit addresses.
3. IPv4 uses 128-bit addresses, IPv6 uses 64-bit addresses.
4. IPv4 and IPv6 use the same address length.

Which protocol operates at the network access layer of the DoD TCP/IP model?

1. HTTP
2. IP
3. DNS
4. Ethernet

True or false? The Internet layer is only concerned with wired network connections.

1. True
2. False

How many layers does the DoD model consist of?

1. Four layers
2. Six layers
3. Five layers
4. Seven layers

Internet Layer

Network Layer

Transport Layer

Application Layer 

Which protocol tests network connectivity and measures network performance?

1. Ping
2. DNS
3. FTP
4. HTTP

Which protocol automates network configuration by assigning IP addresses?

1. FTP
2. SMTP
3. Ping
4. DHCP

Which layer of the DoD model is responsible for data packaging and addressing?

1. Internet layer
2. Application layer
3. Transport layer
4. Network layer

Which layer of the DoD model is responsible for end-to-end communication?

1. Transport layer
2. Internet layer
3. Network layer
4. Application layer

Which layer of the DoD model is responsible for logical addressing and routing?

1. Internet layer
2. Transport layer
3. Network layer
4. Application layer

Which layer of the DoD model is responsible for providing end-user services?

1. Internet layer
2. Transport layer
3. Application layer
4. Network layer

Which protocol resolves human-readable domain names to IP addresses?

1. SMTP
2. DNS
3. HTTP
4. Ping

Which of the following attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission.

1. UTP
2. STP
3. Coaxial
4. Rope

Which of the following is the most common network media?

1. UTP
2. STP
3. Coaxial
4. Rope

What type of media is traditionally used for television, but can be used to connect to the ISP?

1. Coaxial
2. STP
3. UTP
4. Optical Fiber

What does the twist in UTP cable do?

1. make it longer
2. make it shorter
3. add strength
4. reduce crosstalk

A desktop connected to an office network through a UTP cable is an example of a .......

1. WAN
2. LAN
3. VPN
4. STAR

What are two characteristics of fiber optic cables?

1. It combines the technique of shielding, and twisting
2. It is more expensive than UTP cabling is
3. It typically contains 4 pairs of fiber optic-wires
4. It is not affected by EMI or RFI

What is the fastest internet available?

1. Dial-up
2. DSL
3. Cable
4. Fiber-optic

Data travels onto the Fibre
optic cable by -------?

What benefit does a communication satellite provide to ground stations?

1. Limits the range of communication
2. Enables communication over long distances and in remote areas
3. Requires additional equipment for operation
4. Creates interference with other signals

Why do remote areas often use satellites for communications?

1. Satellites have better signal quality
2. It is costly to use other communication options
3. Other communication options are not available in remote areas
4. Satellite communication provides faster speeds

How does a communication satellite help radio waves to travel further?

1. By absorbing the signal and reducing its strength
2. By creating a barrier for the signal to pass through
3. By changing the frequency of the signal
4. By amplifying the signal and bouncing it back down

What is a satellite?

1. A machine of some kind that goes around the earth.
2. A song by Snoop Dog
3. That thing on the roof that makes your tv work (in the 50's).
4. A moon, planet or machine that orbits a planet or star.

What is the transmission characteristic of this Satellite technology?

1. It requires line of sight
2. It is dependent on weather conditions
3. It is omnidirectional
4. It can penetrate solid obstacles

What is the typical distance between towers in this technology?

1. 20-50kms
2. 100-200kms
3. 1-5kms
4. 5-10kms

What kind of terrain can obstruct the signal in this technology?

1. Open plains
2. Coastal areas
3. Deserts
4. Mountains and major forests

How does the signal travel from one tower to the next in the technology described?

1. It is amplified and sent on to the next tower
2. It is bounced off the atmosphere
3. It is relayed through satellites
4. It travels underground

Who may or may not get a signal based on the ownership of the masts?

1. Government employees
2. Residential users
3. International tourists
4. Customers of specific companies

Why does cellular not work in most remote areas?

1. No cells available
2. Limited coverage area
3. High interference
4. Poor signal strength

What kind of network do telephone systems work on?

1. Cellular network
2. Satellite network
3. Fiber optic network
4. Bluetooth network

Cellular data is sent from the Fibre optic to a

1. Main Tower
2. Cellular Tower
3. Converter tower
4. None of the above

What is Wi-Fi?

1. A wireless network connection
2. A type of sound card
3. A type of software that scans for viruses
4. An extra-wide computer case used by servers

What is the role of the Bluetooth controller, Link Manager (LM)?

1. Generate radio waves
2. Display device status
3. Send and receive data
4. Manage power supply

What is the frequency range used by Bluetooth?

1. 2.400-2.483 GHz
2. 3.000-3.500 GHz
3. 2.500-2.600 GHz
4. 1.800-2.000 GHz

A router acts as a gateway to the internet

1. True
2. False

What is a Router?

1. A networking device that forwards data packets.
2. A device used to cut wood.
3. A musical instrument.
4. A kitchen appliance for making toast.

What is a router used for?

1. Receiving internet signal from your ISP
2. Ensuring that your personal information is secure
3. Providing power to the computer
4. Connecting several devices to a single Internet connection

What is the fundamental
purpose of routing?

1. Switching traffic to the correct MAC address
2. Communicating between logical networks
3. Dropping Runt or Jumbo frames
4. Freeing up unused IPv4 addresses

When will a host successfully connect to a switch?

1. Sides have the same duplex and speed
2. Sides have the same duplex but different speed
3. Sides have different duplex but the same speed
4. Sides have different duplex and speed

Which network hardware device connects multiple computers within a local area network (LAN)?

1. Ethernet switch
2. Bluetooth adapter
3. Wireless access point
4. DSL modem

What is a potential use of a wireless access point in a company?

1. Block network access
2. Allow visiting salespeople to log in
3. Provide cabled network access
4. Limit the number of connections

What is a disadvantage of Wi-Fi compared to a cabled network?

1. More secure
2. Slower speed
3. Unlimited radio channels
4. Faster speed

What is the primary function of a firewall in a network?

1. Amplifying Wi-Fi signals
2. Transferring files between devices
3. Assigning IP addresses
4. Blocking unauthorized access and malicious traffic

Users are having trouble accessing Office 365. Which of the following is most likely the problem?

1. The trial period for the software has expired
2. Windows or Office was not activated
3. Office 365 is being blocked by a firewall
4. Microsoft has denied your company access

Data in terms Binary Numbers are separated into packets

1. False
2. True

What type of media offers high transmission speed over very large distances?

1. Wireless
2. STP
3. UTP
4. Optical Fiber

Name at least two Protocols used on the internet

When data is encoded as pulses of light, which media is being used to transmit the data?

1. Wireless
2. Fiber-Optic cable
3. Copper cable

What type of media offers the most mobility?

1. Wireless
2. STP
3. UTP
4. Optical Fiber

After you enter the Web address or domain name in the Browser your device request

1. The Webpage
2. Request the IP address of the Webserver from the DNS
3. Request the DHCP
4. None of the above

Data is transmitted in Binary 0s and 1s

1. True
3. False