Ch10 IPv4 to IPv6 Interoperation – Test Bank | 4th Ed

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Chapter 7: IP Address Autoconfiguration

Student: ___________________________________________________________________________

 DHCP delivers the necessary configuration information to clients to tell them the addresses of their IP gateways. 
True    False

 DHCP can exclude individual addresses or address ranges from dynamic allocation to client machines. 
True    False

 Clients have static IP addresses because their DNS entries must stay consistent. 
True    False

 Clients ordinarily attempt to renew existing releases by default, but you can instruct a DHCP server to deny lease renewals, or even cancel leases, when necessary. 
True    False

 The DHCP specification, RFC 2131, defines the default value for T1 as:
0.95 * duration_of_lease 
True    False

 ____ is a service that provides a way for a client computer that lacks an IP address assignment to request one from any listening DHCP server - without the help of an administrator. 
A. TCP/IP
B. DHCP
C. BOOTP
D. PING

 ____ was developed in the 1970s as a way to provide sufficient network access so diskless workstations could access startup information across the network, instead of reading it from a local disk drive. 
A. TCP/IP
B. WINS
C. DHCP
D. BOOTP

 DHCP servers can manage one or more ranges of IP addresses, each of which may be called a(n) ____. 
A. address pool
B. relay agent
C. release
D. local agent

 If no DHCP server is present in some broadcast domain, a special piece of software called a(n)____ must be present in that broadcast domain. 
A. broadcast bit
B. address pool
C. DHCP relay agent
D. address scope

 The ____ software, or other similar software available for most other modern operating systems, is enabled at a client machine when you select the Obtain an IP address automatically option in the Internet Protocol (TCP/IP) Properties window. 
A. DHCP relay agent
B. DHCP server
C. DHCP client
D. DHCP router

 The job of the DHCP ____ software is to intercept address requests on a local cable segment and repackage those requests as a unicast to one or more DHCP servers. 
A. relay agent
B. cluster
C. client
D. router

 With a(n) ____ the administrator explicitly assigns an IP address manually by associating a client’s hardware address with a specific IP address to be leased to that client. 
A. dynamic address lease
B. manual address lease
C. IP gateway
D. discovery broadcast

 A(n) ____ is used to assign addresses to clients or other machines when fixed IP addresses are not required. 
A. dynamic address lease
B. manual address lease
C. IP gateway
D. discovery broadcast

 ____ have static IP addresses because their addresses are key parts of any subnet’s IP configuration. 
A. Clients
B. Relay agents
C. Broadcast bits
D. Routers

 ____ use dynamic IP addresses because they initiate the connections to the servers, and the servers simply respond to the clients based on the clients’ IP addresses. 
A. Clients
B. Routers
C. IP gateways
D. Servers

 When a DHCP client boots up, it performs a Standard ____ to enable it to communicate on the network. 
A. Address Discovery
B. Client Discovery
C. Router Discovery
D. Packet Discovery

 The ____ packet includes the IP address that is offered to the client and, sometimes, answers to the requested options in the DHCP Discover packet. 
A. Acknowledgement
B. Offer
C. Request
D. Discover

 The ____ packet is sent from the server to the client to indicate the completion of the four-packet DHCP Discovery process. 
A. Acknowledgement
B. Offer
C. Request
D. Discover

 ____ is defined as the time that the client tries to renew its network address by contacting the DHCP server that sent the original address to the client. 
A. R1
B. T2
C. T1
D. R2

 ____ is defined as the time that the client begins to broadcast a renewal request for an extended lease time from another DHCP server. 
A. R1
B. T2
C. T1
D. R2

 The ____ field is set to 0 by the client and may be used by relay agents as they assist a client in obtaining an IP address and/or configuration information. 
A. Hardware
B. Hops
C. Flags
D. Transaction ID Number

 The ____ field contains a random number selected by the client and is used to match requests and responses between the client and server. 
A. Your IP Address
B. Hops
C. Flags
D. Transaction ID Number

 The ____ field contains the address being offered by the DHCP server. 
A. Your IP Address
B. Hops
C. Flags
D. Transaction ID Number

 The DHCP ____ process relies heavily on broadcasts, but most routers do not forward broadcasts. 
A. discovery
B. lease
C. request
D. boot

 Microsoft Windows Server 2008 R2 support the creation of a DHCP ____. 
A. VoIP
B. class
C. superscope
D. router

 One good way to troubleshoot DHCP is to use a ____. 
A. relay agent
B. router
C. firewall
D. protocol analyzer

 DHCP traces its origins back to an earlier protocol named ____________________. 
________________________________________

 ____________________ allows two or more servers to be managed as a single system. 
________________________________________

 During the DHCP Discovery process, the client broadcasts a Discover packet that identifies the client’s ____________________. 
________________________________________

 ____________________ are a collection of scopes that contain sets of non-consecutive IP addresses that can be assigned to a single network. 
________________________________________

 The command ____________________ , in the IPCONFIG utility, releases the IP address for the specified adapter. 
________________________________________

 Match each item with a statement below. 

 Provide a brief description of how DHCP works from a client perspective. 

 How do the lengths of leases vary? 

 What is the difference between the DHCP server software and the DHCP client software? 

 What is the difference between a manual address lease and a dynamic address lease? 

 How does DHCP integrate with DNS? 

 List the four packets used by DHCP Discovery. 

 What is the difference between the Operation Code (OPCODE) field and the Hardware Type Field? 

 List the message types used by the DHCP boot sequence. 

 What are the most significant differences of DHCPv6 from earlier versions? 

 Briefly describe how to combine stateful and stateless address autoconfiguration. 

Chapter 7: IP Address Autoconfiguration