Networking II - Test 3 - Ch 7-9
Once a TCP connection is established, which of the following can maintain the connection when there is no data sent across the wire? a. watchdog process b. core services c. keep-alive process d. handshake process
keep-alive process
Which of the following includes the IP address that is offered to the client and, sometimes, answers to the requested options of the DHCP Discover packet a. Acknowledgement packet b. Offer packet c. Request packet d. Discover packet
Offer packet
the ___________________ is distiguished from other name servers for a domain by its ability to always read its data from a zone file on disk when the DNS service starts up.
primary master
During the DHCP Discovery process, the client broadcasts a Discover packet that identifies the client's ______________________________.
hardware address
Most DNS resolvers issue which of the following from the client side? a. recursive query b. address query c. nslookup d. namequery
recursive query
What type of query is known as a query that keeps working until an answer of some kind is forthcoming? a. domain query b. reverse query c. recursive query d. NSLOOKUP query
recursive query
The initial sequence number used in a TCP connection is defined by the which of the following and, for security puposes, should be randomly assigned? a. host b. packet c. port d. segment
host
A name query seeks to resolve an address to a domain name, and is also know as an ________________________
inverse DNS query
The command ______________________, in the IPCONFIG utlity, releases the IP address for the specified adapter.
ipconfig /release
Which of the following types of DHCP software intercepts address requests on a local cable segment and repackages those requests as a unicast to one or more DHCP servers? a. relay agent b. cluster c. client d. router
relay agent
Which resource record lists the IP based services, such as Telmet, FTP, HTTP, and so forth, that an internet host can supply? a. well-known services b. text c. name server d. host information
well-known services
A ________________________ occurs when a secondary server updates its database from the primary domain NS.
zone transfer
Which of the following use dynamic IP addresses because they initiate the connections to the servers, and the servers simply respond to the clients based on the client's IP addresses? a. Clients b. Routers c. IP gateways d. Servers
Clients
TRUE or FALSE Domains (such as ibm.com) can be broken into subdomains (such as clearlake.ibm.com)_, and needed.
True
TRUE or FALSE The structure of the DNS database mirrors the structure of the domain namespace itself.
True
TRUE or FALSE UDP is the only connectionless TCP/IP protocol at the Transport layer.
True
TRUE or FALSE When a TCP/IP client uses a resolver to send a name query to a DNS server, that client obtains the address for the DNS server it queries from its TCP/IP configuration data.
True
By default, Windows Vista, Windows 7, and Windows Server 2008 support a port range of 49152 to which port number? a. 55874 b. 58314 c. 61000 d. 65535
65535
A DNS resource record that maps IPv4 addresses to hosts within a domain 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
A record
The DHCP _______________________ packet is sent from the server to the client to indicate the completion of the four-packet Discovery process
Acknowledgment
Which of the following is sent from the server to the client to indicate the completion of the four packet DHCP Discovery process? a. Acknowledgment packet b. Offer packet c. Request packet d. Discovery packet
Acknowledgment packet
DHCP traces its origins back to an earlier protocol named ________________.
BOOTP
What 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
BOOTP
A DNS resources record used to define database aliases, primarily to make it quicker and easier to edit and manged DNS zone files 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
CNAME record
What type of servers are used to store recently accessed DNS records from other domains to avoid incurring the performance overhead involved in making a remote query each time a resource outside the local domain is accessed? a. Name resolvers b. Primary DNS severs c. subdomains d. Caching servers
Caching servers
A type of server that is used only to cache already resolved domain names and addresses, as well as related error information 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Caching-only server
Which of the following provide the simplest kind of transport service because they simply package messages, takes as is from the TCP/IP Application layer into datagrams? a. Core services b. Port numbers c. Logical connections d. Connectionless protocols
Connectionless protocols
Which of the following is a service that provides a way for a client computer that lacks an IP address assignment to request one from any listening DHCP sever-without the help of an administrator? a. TCP/IP b. DHCP c. BOOTP d. PING
DHCP
Which of the following 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 routers
DHCP Client
The client broadcasts a packet that identifies the client's hardware address looking for a DHCP Server. 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
DHCP Discovery
Used to expand the data that is included in the DHCP packet 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
DHCP option
If no DHCP server is present in some broadcast domain, which of the following special pieces of software must be present in that broadcast domain? a. broadcast bit b. address pool c. DHCP relay agent d. address scope
DHCP relay agent
Which of the following processes permits a DNS server to keep track of which IP addresses it has provided most recently for a specific translation and to rotate the IP addresses within the pool? a. IP spoofing b. name resolution c. FQDN d. DNS round robin
DNS round robin
The principle whereby one name server designates another name server to handle some or all of the zone files for the domain or subdomains under its purview. 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Delegation of authority
Which of the following defines the destination application or process that uses the IP and UDP headers? a. Checksum field value b. Dynamic Port Number field value c. Length field value d. Destination Port Number field value
Destination Port Number field value
A type of DHCP address lease in which each address allocation comes with an expiration timeout so address leases must be renewed before expiration occurs. 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
Dynamic address lease
Which of the following is used to indicate that the host completed a transaction? a. Reset flag b. FIN flag c. SYN flag d. URG flag
FIN flag
TRUE or FALSE Not all the data in a DNS cache has an expiration value
False
TRUE or FALSE TCP keep-alive are enabled by default on Windows XP, Windows Vista, Windows 7, Windows Server 2003, and Windows Server 2008, although any application may disable TCP keep-alives. If desired by its programmer.
False
TRUE or FALSE The DHCP specification RFC 2131, defines the default value of T1 as 0.95* duration of lease
False
TRUE or FALSE Clients have static IP addresses because their DNS entries must stay consistent.
False
TRUE or False Twenty-six roots name servers (named A ROOT-SERVERS.NET., B.ROOT-SeVERS.NET, etc_ act as the top of the DNS hierarchy worldwide. They provide the ultimate source for all name lookups that cannot be resolved through other means
False
Which of the following fields is set to 0 by the client and may be used to relay agents as they assist a client in obtaining an IP address and/or configuration information? a. Hardware field b. Hops field c. Flags field d. Transaction ID Number field
Hops field
When one DNS server recieves a recursive request, that DNS sever issues which of the following to the name servers in its hierarchy, or to severs provided as pointers in reply to earlier requests, until an answer is received? a. caching queries b. address queries c. domain queries c. iterative queries
Iterative queries
Which of the following defines the length of the packet from the UDP header to the end of valid data (not including any data link padding. If padding is required)? a. Checksum field b. Dynamic Port Number Field c. Length field c. Destination Port Number field
Length field
A protocol that provides name resolution services on local networks for IPv4 and IPv9 Windows computers 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Link-Local Multicast Name Resolution (LLMNR)
In a DHCP Discover packet, what is the client identifier field based on? a. Client GUID b. Computer name c. IP address d. MAC address
MAC address
With which of the following devices may the administrator explicitly assign 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
Manual address lease
Containing multiple network interfaces capable of attaching to multiple subnets 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Multihomed
A name resolution protocol used for peer-to-peer network environments and that provides secure and scalable resolution services 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Peer Name Resolution Protocol (PNRP)
A DNS resource record that's used to inverse lookups to map numeric IP address to domain names. 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
Pointer record
It is important to understand that the zone data on a secondary server always originates from which types of server? a. caching b. incremental c. name d. primary
Primary
The client starts this process to determine if it can keep the address after the lease time expires. 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
Renewal process
Which type of request will always go to the name server that is authoritative for the domain that contains the requested name or address to make completely sure data is obtained directly from the source? a. Root server b. client server c. Mail server d. cache server
Root server
Which of the following have static IP addresses because their addresses are key parts of any subset's IP configuration? a. client b. relay agent c. Broadcast bits d. Routers
Routers
A DNS resource record that identifies the server or servers that are authoritative for the domain or subdomain to which the zone files or database correspond. 1. A Record 2. Delegation of authority 3. Pointer record 4. SOA record 5. Multihomed 6. Peer Name Resolution Protocol (PNRP) 7. Link-Local Multicast Name REsolution (LLMNR 8. Caching-only server 9. CNAME record
SOA record
When a DHCP client boots up, which of the following will it perform in order to enable it to communicate on the network. a. Standard Address Discovery b. Standard Client Discovery c. Standard Router Discovery d. Standard Packet Discovery
Standard Address Discovery
Presents the required router configuration information to all comers 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
Stateless autoconfiguration
_____________________ are a collection of scopes that contain sets of non-connective IP addresses that can be assigned to a single network.
Superscopes
Which of the following terms 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
T1
Which of the following terms 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
T2
An application or service that encounters a domain name for which it needs an IP address is known as which of the following? a. address request b. TCP/IP client c. Caching server d. DNS client
TCP/IP client
TRUE and FALSE TCP half-open connection occur when the handshake process does not end successfully with a final ACK
TRUE
Which of the following fields 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
Transaction ID Number
TRUE or 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
TRUE or FALSE DHCP can exclude individual addresses or address ranges from dynamic allocation to client machines
True
TRUE or FALSE DHCP delivers the necessary configuration information to clients to tell them the addresses of their IP gateway
True
Which of the following is a simple protocol that is used by applications that contain their own connection-oriented timeout values and retry counters, similar to those provided by TCP? a. UDP b. DoS c. RTO d. MSS
UDP
Which process provides a mechanism whereby DNS can attempt to satisfy name resolution requests locally before attempting them remotely, thereby greatly improving the speed of such name resolution? a. transferring b. caching c. resolving d. spoofing
caching
Which of the following fields contains the address being offered by the DHCP server? a. Your IP address b. Hops c. Flags d. Transaction ID Number
Your IP Address
What are the files called that map addresses to domain names for reverse lookup? a) addr.in-addr.arpa.dns b) domain.dns c) tree.dn d) clearlake.dns
addr.in-addr.arpa.dns
DHCP servers can manage one or more ranges of IP addresses, each of which may be called what? a. address pool b. relay agent c. release d. local agent
address pool
An ________________________seeks to resolve a domain name to a corrosponding numeric IP address, it simply provides a symbolic domain name, and expects a numeric IP address to return.
address request
TCP has four defined congestion control mechanisms to ensure the most efficient use of _____________________ along with quick error and congestion recovery
bandwidth
A protocol that offers no built-in error-checking or retransmission capability uses which type of packet delivery? a. low performance b. connection-oriented c. best-effort d. high priority
best effort
Which of the following DHCP processes relies heavily on broadcasts, but most routers do not forward broadcasts? a. discovery b. lease c. request d. boot
boot
Which process provides a mechanism whereby DNS can attempt to satisfy name resolution request locally before attempting them remotely, thereby greatly improving the speed of such name resolution. a. transferring b. caching c. resolving d. spoofing
caching
Which type of resource record is used to create aliases? a. canonical name b. host information c. name server d. pointer
canonical name
DHCP can exclude individual addresses or address ranges from dynamic allocation to _______________________.
client machines
The records in which file are provided to support reverse DNS lookups? 1) arps.addr 2) db.addr 3) cname.addr 4) dns.addr
db.addr
Which of the following 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
dynamic address lease
The TCP connection termination process requires how many packets? a. one b. two c.. three d. four
four
What is used in order for TCP hosts to create a virtual connection with each other? a. sliding window b. handshake process c. teardown sequence d. retry mechanism
handshake process
The Fast Recovery process dictates that when a host receives three duplicate ACKs, it must immediately start retransmitting which of the following without waiting for the retransmission timer to expire. a. duplicate ACKs b. core services c. byte streams d. lost segments
lost segments
Which record is used to route SMTP-based e-mail on the Internet and identify the IP address for a domain's master e-mail server? a. Canonical name b. mail exchange c. name servers d. pointer
mail exchange
Which of the following is responsible for initiating and sequencing DNS queries that result in name resolution for an application running on the computer. a. name resolver b. subdomain c. primary master d. caching server
name resolver
DNS servers cache name and address pairs for addresses they resolved, and they keep information about name requests that result in error messages. What is this information called? a. DNS round robin b. name resolution c. negative caching d. IP spoofing
negative caching
Which command is used to show active TCP connections, listening ports, ethernet statistics, IPv4 statistics and IPv6 statistics? a. nslookup b. route c. netstat d. dnscmd
netstat
Which command is an essential tool for testing when configuring or troubleshooting a DNS sever? a. nslookup b. route c. netstat d. dnscmd
nslookup
Which type of resource record stores IP address-to-domain name translation data and supports, the operation known as a reverse DNS lookup? a. well-known services b. text c. pointer d. host information
pointer
In a DHCP request or renewal it is the last address the client used 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
preferred address
Process to help route DHCP Discover broadcasts to another network segment 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
relay agent process
Packet sent by the DHCP client server to relinquish a network address and cancel the menacing lease 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP option
release
Data associated with domain names, address records, and other specific data of interest to the Domain Name System is stored on the DNS server in special database records, called which of the following? a. hosts b. resource records c. zones d. primary master
resource records
A _________________________ gets its data for the zone from the master server for that zone.
secondary DNS server
Which of the following processes guarantees the packets are ordered properly and protects against missing segments? a. watchdog b. keep-alive c. handshake d. sequence of acknowledgment
sequence of acknowledgment
Which of the following does TCP support, which is a management method for data transmission used to determine the amount of unacknowledged data that can go out on the wire from any sender? a. congestion mechanism b. retry mechanism c. sliding window mechanism d. watchdog mechanism
sliding window mechanism
The DHCPv6 maintain awareness of the status or state of its pool of available addresses, the presence or absence on the network of permitted clients, and is variety of other parameters. 1. Dynamic address lease 2. Renewal process 3. release 4. relay agent process 5. DHCP Discovery 6. stateful autoconfiguration 7. preferred address 8. Stateless autoconfiguration 9. DHCP options
stateful autoconfiguration
Which of the following DHCP creations does Microsoft Windows Server 2012 R2 support? a. VoIP b. class c. superscope d. router
superscope
Which of the following resource records may be used to add arbitrary test information to a DNS database, usually for documentation? a. well-known services b. text c. pointer d. host information
text