sirhulk1
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Understanding of the DoD network model that was designed by the Department of Defense.

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sirhulk1
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TCP/IP and the DoD Model

Question 1 of 39

1

The Department of Defense created the DoD model which is made of four layers. What are they?

Select one or more of the following:

  • Network layer

  • Network access layer

  • Process/Application layer

  • Data Link Layer

  • Internet Layer

  • Host to Host Layer

Explanation

Question 2 of 39

1

The Process/Application from the DoD model is equal to what layers in the OSI model?

Select one or more of the following:

  • Application Layer

  • Transport Layer

  • Presentation Layer

  • Network Layer

  • Session Layer

Explanation

Question 3 of 39

1

The Host to Host layer from the DoD model is equal to what layer of the OSI model?

Select one or more of the following:

  • Network Layer

  • Transport Layer

  • Network Access

Explanation

Question 4 of 39

1

The Network Access of the DoD model is equal to what layers of the OSI model?

Select one or more of the following:

  • Data Link Layer

  • Network Layer

  • Internet Layer

  • Physical Layer

Explanation

Question 5 of 39

1

The DoD Process/Application Layer provides support on different applications. Which of these applications does it support?

Select one or more of the following:

  • Telnet and SSH

  • HTTP/HTTPS

  • SMTP/ SNMP

  • NTP and NFS

  • DNS, DHCP and BootP

  • POP, FTP, and TFTP

  • IPv4 and IPv6

Explanation

Question 6 of 39

1

Telnet is a protocol that its specialty is __________ ____________.

Select one or more of the following:

  • Accessing information.

  • Terminal Emulation.

Explanation

Question 7 of 39

1

With File Transfer Protocol (TFTP) there is no authentication.

Select one of the following:

  • True
  • False

Explanation

Question 8 of 39

1

Post Office Protocol (POP) and Internet Message Access Protocol (IMAP) provides a storage facility for incoming mail. Its only used for receiving email.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 39

1

Simple Mail Transfer Protocol (SMTP) is used to spool, queue, and send email only.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 39

1

What is the well known port number for FTP?

Select one or more of the following:

  • 20 (FTP data) and 21 (FTP Control)

  • 23 (FTP data) and 24 (FTP Control)

Explanation

Question 11 of 39

1

What is the well know port number for Secured Shell and Telnet

Select one or more of the following:

  • Port 19 (SSH) and Port 23 (Telnet)

  • Port 22 (SSH) and Port 23 (Telnet)

Explanation

Question 12 of 39

1

What is the well known port numbers for HTTP and HTTPS?

Select one or more of the following:

  • Port 80 (HTTP) and Port 442 (HTTPS)

  • Port 80 (HTTP) and Port 443 (HTTPS)

Explanation

Question 13 of 39

1

What is the well known port numbers for SMTP and DNS?

Select one or more of the following:

  • Port 25 (SNMP) and Port 53 (DNS)

  • Port 25 (SMTP) and Port 52 (DNS)

  • Port 25 (SMTP) and Port 53 (DNS)

Explanation

Question 14 of 39

1

DNS (Port 53) uses both TCP and UDP

Select one of the following:

  • True
  • False

Explanation

Question 15 of 39

1

What is the well known port numbers for SNMP and BOOTP/DHCP?

Select one of the following:

  • Port 161(SNMP) and Port 67 (BOOTP/DHCP)

  • Port 67 (SNMP) and Port 161 (BOOTP/DHCP)

Explanation

Question 16 of 39

1

TCP is a full duplex, ______________ protocol that uses a virtual circuit for a sesssion, and UDP is a _____________ protocol that does not provide a virtual circuit for a session.

Select one of the following:

  • connection-oriented, connection-less

  • connection-less, connection-oriented

Explanation

Question 17 of 39

1

In the Dod Model, the only protocols that the Host to Host layer provide are TCP and UDP

Select one of the following:

  • True
  • False

Explanation

Question 18 of 39

1

TCP segment format contains a 16 bit source port and 16 bit destination port. It also contains a 32 bit sequencing number (when receiving segments) and a 32 bit acknowledgment (To request the next expected data via windowing)

Select one of the following:

  • True
  • False

Explanation

Question 19 of 39

1

UDP format does not sequence nor does it use any form of windowing so no acknowledgments are expected. Also it does not create a virtual circuit. The only format for UDP is a 16 bit Source port and a 16 bit destination port. It does have a 16 bit Length field and a 16 bit Checksum field along with the data.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 39

1

Ports up to 1023 are considered to be well known port numbers as defined by the RFC 3232.

Select one of the following:

  • True
  • False

Explanation

Question 21 of 39

1

In the Dod Model the Internet Layer, what are the protocols supported?

Select one or more of the following:

  • Internet Protocol (IP)

  • Session Protocol

  • Proxy ARP (Address Resolution Protocol)

  • Reverse Address Resolution Protocol

  • Logical addressing protocol

  • Address Resolution Protocol

  • Internet Control Message Protocol (ICMP)

Explanation

Question 22 of 39

1

What are the ports used in the Internet Layer's IP header to provide over to the Host to Host layer of the DoD model for both TCP and UDP?

Select one or more of the following:

  • Port 6 (TCP) and Port 17 (UDP)

  • Port 15 (UDP) and Port 17 (TCP)

Explanation

Question 23 of 39

1

The Protocol field in the IP header for the Host to Host (DoD) and Transport (OSI) layers can also be using protocols aside from TCP and UDP. What are the protocols?

Select one or more of the following:

  • Port 4 (IP Tunneling) Port 115 (Layer 2 Tunneling)

  • Port 88 (EIGRP) and Port 89 (OSPF)

  • Port 41 (IPv6) and Port 1 (ICMP)

Explanation

Question 24 of 39

1

What finds a hardware address from a known IP address?

Select one or more of the following:

  • Reverse Address Resolution Protocol (RARP)

  • Address Resolution Protocol (ARP)

Explanation

Question 25 of 39

1

What finds an IP address from its known hardware address?

Select one or more of the following:

  • Reverse Address Resolution Protocol (RARP)

  • Address Resolution Protocol (ARP)

Explanation

Question 26 of 39

1

This is a technique by which a device on a given network answers the ARP queries for a network address that is not on that network.

Select one or more of the following:

  • Address Resolution Protocol (ARP)

  • Proxy Address Resolution Protocol (ARP)

  • Reverse Address Resolution Protocol (RARP)

Explanation

Question 27 of 39

1

Internet Protocol (IP) is a connection-less protocol

Select one of the following:

  • True
  • False

Explanation

Question 28 of 39

1

What are port numbers used for?

Select one of the following:

  • Port numbers are used to transfer information from one layer to another.

  • Port numbers are used to identify the protocol or service that is to be used in the transmission.

Explanation

Question 29 of 39

1

The four layers of the TCP/IP Stack are 1)_________, 2) _____________, 3) ____________, 4)_____________.

Select one or more of the following:

  • Process / Application, Host to Host, Internet, Network Access

  • Application, Transport, Internet, Network Access

Explanation

Question 30 of 39

1

The four layers of the DOD model are 1) ___________, 2) ____________, 3)_____________, 4) _____________ .

Select one or more of the following:

  • Process / Application, Host to Host, Internet, Network Access

  • Application, Transport, Internet, Network Access

Explanation

Question 31 of 39

1

The TCP/IP Protocol Suite is the networking model and a set of communication protocols used for the internet and similar networks.

Select one of the following:

  • True
  • False

Explanation

Question 32 of 39

1

What are the TCP/IP Protocols for the Application Layer? (Choose three)

Select one or more of the following:

  • UDP and TCP

  • Ethernet, and Token Ring.

  • Telnet and SSH

  • Switches and Bridges

  • HTTP and FTP

  • DHCP, SMTP, and SNMP

Explanation

Question 33 of 39

1

What are the TCP/IP Protocols for the Application Layer? (Choose three)

Select one or more of the following:

  • UDP and TCP

  • Ethernet, and Token Ring.

  • Telnet and SSH

  • Switches and Bridges

  • HTTP and FTP

Explanation

Question 34 of 39

1

What is the TCP/IP Stack Model protocols for the Transport Layer?

Select one of the following:

  • IPv4 and IPv6

  • ICMP and ARP

  • TCP and UDP

  • Ethernet and Token Ring

Explanation

Question 35 of 39

1

What are the TCP/IP Model protocols for the Internet Layer? (Choose three)

Select one or more of the following:

  • Ethernet and Token Ring

  • IPv4 and IPv6

  • HTTP and FTP

  • ICMP and ARP

  • RARP

  • SNMP

Explanation

Question 36 of 39

1

What are the TCP/IP Model Protocols for the Network Access layer? (Choose three)

Select one or more of the following:

  • TCP and UDP

  • IPv4 and IPv6

  • Ethernet and Token Ring

  • HTTP and FTP

  • Hardware Adapters

  • X.25 and FDDI

Explanation

Question 37 of 39

1

What two protocols uses session multiplexing?

Select one or more of the following:

  • HTTP and HTTPS

  • IPv4 and IPv6

  • TCP and UDP

Explanation

Question 38 of 39

1

TCP uses port number ____ for FTP, and for Telnet ____ and for HTTP ______ when supporting Application layer services.

Select one or more of the following:

  • FTP=21, Telnet=25, HTTP=80

  • FTP=23, Telnet=21, HTTP=80

  • FTP=21. Telnet=23, HTTP=80

Explanation

Question 39 of 39

1

What of the following are considered "Well Known Ports"? (Choose two)

Select one or more of the following:

  • FTP=21 Telnet=23 SMTP=25

  • HTTP=8080

  • HSRP=1985

  • DNS=53, SNMP=161, TFTP=69

Explanation

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