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