Networking 2 Final Exam
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Questions and Answers

IPv4 consists of four numbers (called what?) separated by periods

  • subnets
  • digits
  • octets (correct)
  • host addresses

191.10.100.20 is categorize as a what address?

  • Class B (correct)
  • Class A
  • Class C
  • Class D

IP Addresses in the Class C private range are:

  • 10.0.0.0 to 10.255.255.255
  • 172.16.0.0 to 172.31.255.255
  • 192.168.0.0 to 192.168.255.255 (correct)
  • 127.0.0.0 to 127.255.255.255

The layer 2 (Data Link Layer) PDU (Protocol Data Unit) is called a:

<p>frame (B)</p> Signup and view all the answers

Transport Layer protocols are: (choose 2)

<p>TCP (A), UDP (B)</p> Signup and view all the answers

What is 3rd layer of the OSI model?

<p>Network (C)</p> Signup and view all the answers

Which is faster but is unreliable?

<p>UDP (A)</p> Signup and view all the answers

Which of these is an application layer protocol?

<p>https (A)</p> Signup and view all the answers

Which layer is responsible for logical addressing and routing?

<p>Network (C)</p> Signup and view all the answers

What is hexadecimal for binary 1011?

<p>B (B)</p> Signup and view all the answers

What is a common prefix for hexadecimal?

<p>0x (C)</p> Signup and view all the answers

Which of these is inside an IPv4 header?

<p>TTL (C)</p> Signup and view all the answers

For a /16 network, which is the host portion of the address 1.2.3.4?

<p>3.4 (D)</p> Signup and view all the answers

Which allows 256 addresses with 254 usable hosts?

<p>/24 (C)</p> Signup and view all the answers

What is at the end of a frame?

<p>FCS (C)</p> Signup and view all the answers

Which of these is a valid Mac Address?

<p>A0:B1:C2:D3:E4:11 (D)</p> Signup and view all the answers

The network layer encapsulates the protocol data unit (PDU) from the transport layer into a packet.

<p>True (A)</p> Signup and view all the answers

What is a technique used in networking to map private IP addresses within a local network to a single public IP address for internet access.

<p>Network Address Translation (D)</p> Signup and view all the answers

Which command displays the current routing table, including active routes, network destinations, netmasks, gateways, interfaces, and metrics. Choose 2.

<p>netstat -r (C), route print (D)</p> Signup and view all the answers

Which command would you use to see address resolution on a windows client?

<p>arp -a (C)</p> Signup and view all the answers

Flashcards

IPv4 octets

Four numbers separated by periods in an IPv4 address

Class B address

An IPv4 address in the range 128.0.0.0 to 191.255.255.255

Private Class C range

IPv4 addresses from 192.168.0.0 to 192.168.255.255, used for local networks.

Data Link Layer PDU

A frame, the fundamental unit of data transmitted at the Data Link Layer.

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Transport Layer protocols

TCP and UDP are examples; they handle data delivery between applications.

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OSI Model Layer 3

The Network Layer, responsible for logical addressing and routing.

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Faster, unreliable protocol

UDP, used for streaming and real-time applications where speed is more critical than reliability.

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Application Layer Protocol

HTTPS, a protocol that allows secure communication between web browsers and servers.

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Logical Addressing & Routing Layer

Network Layer - it manages the routing of data between networks.

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Hexadecimal for 1011

Binary 1011 is equivalent to hexadecimal 'B'.

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Hex prefix

A common prefix for hexadecimal values is '0x'.

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IPv4 header component

TTL (Time To Live) is part of the IPv4 header.

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Host portion (/16 address)

In an address like 1.2.3.4, the host portion for a /16 network is 3.4.

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Addresses in /24 network

A /24 network allows 256 addresses, with 254 usable hosts.

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End of Frame

Frame Check Sequence (FCS) is at the end of a data frame.

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Valid MAC Address Format

A valid MAC address would be A0:B1:C2:D3:E4:11, a hexadecimal sequence, colon-separated.

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Network Layer PDU Encapsulation

The network layer encapsulates the Transport Layer PDU into a packet.

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Network Address Translation (NAT)

A technique to map multiple private IP addresses to one public IP address allowing access to the internet.

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Routing Table Display Command (Windows)

netstat -r displays routes.

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ARP Display Command (Windows)

arp -a displays address resolution.

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