PASS-169 Session 4

What is an advantage of using DHCP to dynamically assign IP addresses to hosts on large networks?

• Servers are assigned an IP address only when a client requests a service.

  
  

• Hosts can be assigned addresses from different subnets as the type network traffic changes.

  
  

• Having leased IP addresses means that there are always more addresses available than there are devices.

  
  

• 
  Changes to the addressing scheme require only the DHCP subnet range to be reconfigured.

Pick the option that correctly lists the layers of the ISO (International Organization for Standardisation) networking model (in top down order)

• 
  Physical
  Data-link
  Network
  Session
  Presentation
  Application

• Application
  Presentation
  Session
  TCP
  IP
  Data-link
  Ethernet

• Application
  Presentation
  Session
  UDP
  Internet-link
  Data-link
  Physical

• Application
  Presentation
  Session
  Transport
  Network
  Data-link
  Physical

Which OSI layer header contains the address of a destination host that is in another network?

• Application

• Network

• Data link

  
  

• Transport

In dotted decimal notation, what IP address is the last host address for the network 172.25.0.64/26?

Which of the following statements describes a benefit of creating subnetworks?

• To create distinct broadcast domains, thus reducing broadcast traffic

• To eliminate the need for static IP routing

• To create distinct collision domains, thus reducing collision traffic

• To eliminate the need for dynamic IP routing

A client application typically selects a TCP or UDP source port by doing what?

• Choosing a random value in the well-known port range.

• Choosing a random value in the range of the dynamic ports.

• Choosing a predefined value in the range of the dynamic ports.

• Choosing a predefined value in the well-known port range.

What is the complete range of TCP and UDP well-known ports?

• 0 to 1023

• 256 - 1023

• 1024 - 49151

• 0 to 255

Which of the following best describes the purpose of 802.1q trunk ports?

• Is used to tag Ethernet Frames with VLAN IDs to retain VLAN information between switches

• Is used to create spanning trees

• A QoS standard

• IPoA (IP over Pigeon)

Which of the following is a valid subnet mask.

• 255.240.0.0

• 0.255.255.255

• 255.240.192.0

• 255.255.246.0

Which is the following are INVALID subnet masks? (you may select multiple)

• 192.255.255.0

• 255.255.258.0

• 252.255.255.255

• 255.255.255.1