Module 3 Test Questions

What is an advantage of network devices using open standard protocols? Network communications is confined to data transfers between devices from the same vendor A client host and a server running different operating systems can successfully exchange data Internet access can be controlled by a single ISP in each market Competition and innovation are limited to specific types of products

A client host and a server running different operating systems can successfully exchange data. (pg. 30)

At which OSI layer is data added to a PDU during the encapsulation process?

Application. (pg. 53)

In the TCP/IP model, what happens at the Network Access level?

Controls the hardware devices and media that make up the network (1, 2 in OSI model). (pg. 40)

What is the order PDUs pass down the stack?

Data (data stream), Packet, Frame, Bits (bit stream). (pg. 46)

At which OSI layer is a source MAC address added to a PDU during the encapsulation process?

Data Link. (pg. 57)

In the TCP/IP model, what happens at the Internet level?

Determines the best path through the network (3 in OSI model). (pg. 40)

What is Access Method?

Determines when someone can send a message. (pg. 14)

Which network access methods are there for TCP/IP?

Ethernet, ARP, WLAN. (pg. 23)

A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission?

Ethernet, IP, TCP, HTTP. (pg. 50)

Which applications use TCP/IP?

HTTP, DNS, DHCP, FTP. (pg. 23)

Which internet protocols use TCP/IP?

IPv4, IPv6, ICMPv4, ICMPv6. (pg. 23)

What does Response Timeout do?

Manages how long a device waits when it does not hear a reply from the destination. (pg. 14)

What does Flow Control do?

Manages the rate of data transmission and defines how much information can be sent and the speed at which it can be delivered. (pg. 14)

What is the order of the TCP/IP model (start at Ethernet/WLAN level)?

Network Access, Internet, Transport, Application. (pg. 37)

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

Network. (pg. 51)

At which OSI layer is a destination IP address added to a PDU during the encapsulation process?

Network. (pg. 56)

When a packet travels to a different LAN, will the source and destination IP address change?

No, the source and destination IP address will always remain the same. (pg. 75)

What is Unicast?

One to One communication. (pg. 15)

What is Broadcast?

One to all. (pg. 15)

What is Multicast?

One to many, typically not all. (pg. 15)

What is the order of the OSI model (start at Ethernet/WLAN level)?

Physical, Data Link, Network, Transport, Session, Presentation, Application. (pg. 37)

What is the order of the stack in de-encapulation?

Received as bits (bit stream), Frame, Packet, Segment, Data (data stream). (pg. 49)

In the TCP/IP model, what happens at the Application level?

Represents data to the user, plus encoding and dialog control (5, 6, 7 in OSI model). (pg. 40)

In the TCP/IP model, what happens at the Transport level?

Supports communication between various devices across diverse networks (4 in OSI model). (pg. 40)

How does TCP/IP get transported?

TCP, UDP. (pg. 23)

What is IANA?

THe organization which is responsible for overseeing and managing IP address allocation, domain name management, and protocol identifiers. (pg. 34)

What is the fourth event when a Telnet message is being prepared to be sent over the network? The IP header is added The TCP header is added The Ethernet header is added The Telnet-formatted data is provided to the next layer

The Ethernet header is added. (pg. 27)

What is the Destination IP?

The IP address of the receiving device, final destination of the packet. (pg. 63)

What is the Source IP?

The IP address of the sending device, original source of the packet. (pg. 63)

What is the third event when a Telnet message is being prepared to be sent over the network? The IP header is added The TCP header is added The Ethernet header is added The Telnet-formatted data is provided to the next layer

The IP header is added. (pg. 27)

What is the second event when a Telnet message is being prepared to be sent over the network? The IP header is added The TCP header is added The Ethernet header is added The Telnet-formatted data is provided to the next layer

The TCP header is added. (pg. 27)

What is the first event when a Telnet message is being prepared to be sent over the network? The IP header is added The TCP header is added The Ethernet header is added The Telnet-formatted data is provided to the next layer

The Telnet-formatted data is provided to the next layer. (pg. 27)

Where do you find the network group in an IPv4 address?

The left most part of the address. (pg. 64)

What is the Internet Protocol Suite (TCP/IP)?

The most common protocol suite and maintained by the internet Engineering Task Force (IETF). (pg. 23)

What is ISO?

The organization who is the largest developer of international standards in the world for a wide variety of products and services. It is known for its Open Systems Interconnection (OSI) reference model. (pg. 34)

What is ISOC?

The organization who promotes the open development, evolution, and use of the Internet throughout the world. (pg. 34)

What is Encapsulation?

The process where protocols add their information to the data. (pg. 46)

Where do you find the host porting in an IPv4 address?

The remaining part of the address (non-network group portion). This portion is unique for each device. (pg. 64)

What are communication protocols?

The rules that defines communication between the source and destination. (pg. 7)

At which OSI layer is a destination port number added to a PDU during the encapsulation process?

Transport. (pg. 52)

At which OSI layer is a source port number added to a PDU during the encapsulation process?

Transport. (pg. 58)

When a frame travels to a different LAN, will the source and destination MAC address change when it goes between routers?

Yes, the MAC address changes when the frame is being sent. The source and destination MAC address changes each time the frame goes through a router. (pg. 75)