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PCS 267 TCP/IP
Practice Midterm Test
57
Computer Science
02/12/2008

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Cards

Term
True or False: IP addresses are used to identify individual IP hosts on a TCP/IP internetwork.
Definition
TRUE
Term
_____ is a method that allows an IP host to use a simpified subnetting design.
Definition
ARP
Term
_____ is used to obtain an IP address for an associated data link address.
Definition
RARP
Term
_____ enables a larger packet (for example, a token ring, 4,096-byte packet) to be automatically fragmented by a router into smaller packets to cross a link that supports a smaller MTU, such as an Ethernet link.
Definition
IP Fragmentation
Term
_____ occurs when network traffic starts to exceed handling capacities.
Definition
Network Congestion
Term
_____ permits a gateway (router) on a non-optimal route between sender and receiver to redirect traffic to a more optimal path.
Definition
ICMP Redirect
Term
True or False: ICMP's job is to provide a variety of information about IP routing behavior, reachability, routes between specific pairs of hosts, delivery errors, and so forth.
Definition
TRUE
Term
True or False: ICMP's reports errors only about processing of non-ICMP IP datagrams.
Definition
TRUE
Term
True or False: The ICMP Echo Request guarantees packet delivery.
Definition
FALSE
Term
The TRACEROUTE utility uses _____ to identify a path from the sender to the target host.
Definition
Route Tracing
Term
_____ provide the simplest kind of transport services because they simply package messages, taken as is from the TCP/IP Application layer, into datagrams.
Definition
Connectionless Protocols
Term
True or False: Although connectionless protocols don't track transmission behavior or completeness of delivery (that's what best-effort delivery means), they can optionally include a checksum for each datagram.
Definition
TRUE
Term
True or False: Datagrams are not sequenced but they are acknowledged.
Definition
FALSE
Term
The _____ field defines the application or process that sends the packet using the UDP header.
Definition
Source Port Number
Term
TCP hosts create a virtual connection with each other using a(n) _____ process.
Definition
Handshake
Term
Once the TCP connection is established, a(n) _____ process can maintain the connection when there is no data sent across the wire.
Definition
Keep-Alive
Term
True or False: The TCP connection termination process requires six packets.
Definition
FALSE
Term
_____ is the overloading of the network or a receiver.
Definition
Congestion
Term
True or False: TCP is robust and reliable but it carries a lot of baggage.
Definition
TRUE
Term
True or False: Historically, UDP is a more important transport than TCP.
Definition
FALSE
Term
True or False: For applications, such as RIP, that rely on regular updates of routing tables and track timeout values as part of ordinary behavior, the extra reliabilty of TCP is absolutely necessary.
Definition
FALSE
Term
True or False: TCP was designed in an era when 300-bps communication was considered fast, and noisy lines or intermittent communications problems made a long-haul, reliable transmission of data inherently risky without access to a robust, reliable transport service.
Definition
TRUE
Term
_____ offers a method for transferring files over a connection-oriented transport, or TCP.
Definition
FTP
Term
The _____ is the process of moving the data across the data connection only.
Definition
Data Transfer Process
Term
True or False: Telnet hosts exchange information about options that they support as they establish a connection with another host.
Definition
TRUE
Term
The FTP _____ offers the visual front end to the user.
Definition
UI
Term
HTTP has been in use on the Web since _____.
Definition
1990
Term
True or False: HTTP uses a request/response model, in which HTTP clients send a request to the server and expect a reply packet that contains a status code.
Definition
TRUE
Term
A(n) _____ is a combination of a Uniform Resource Locator (URL) and a Uniform Resource Name (URN).
Definition
Uniform Resource Indicator (URI)
Term
HTTP _____ are commands that the HTTP client issues to the HTTP server.
Definition
Methods
Term
The _____ command looks up domain names, indicates where they are registered, and identifies primary and secondary DNS servers for the DNS databse in which the entry resides.
Definition
whois
Term
_____ was originally designed as a debugging tool to solicit random inout simply and easily without having to generate significant input.
Definition
QOD
Term
_____ is the necessary name-to-numbers correlation similar to the coupling between hostnames and IP addresses.
Definition
Address Translation
Term
A(n) _____ is defined as the end-point in the conversation, which can be a client interface in executable or Web script form, or a programmed automaton called a bot (short for robot).
Definition
Principal
Term
True or False: The structure of the DNS database mirrors the structure of the domain namespace itself.
Definition
TRUE
Term
A(n) _____ record stores domain name-to-IP address translation data.
Definition
Address Record
Term
The _____ is distinguished 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.
Definition
Primary Master
Term
_____ store recently accessed DNS record 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.
Definition
Caching Servers
Term
True or False: A TCP/IP server is usually some application or service that encounters a domain name for which it needs an IP address.
Definition
FALSE
Term
When one DNS server receives a recursive request, that DNS server issues what are called _____ , to the name servers in its hierarchy, or to servers provided as pointers in reply to earlier iterative requests, until an answer is received.
Definition
Iterative Queries
Term
True or False: The reason some recursive name queries involve a root server is because the root servers keep all names in the entire DNS namespace close at hand.
Definition
FALSE
Term
True or False: Supplying one or more DNS server addresses is yet another service that DHCP performs automatically for its clients as part of the DHCP server "options".
Definition
TRUE
Term
Most DNS servers can store the results of previous name queries using a form of local data storage called _____.
Definition
Caching
Term
The files that map host names to addresses are usually named _____.
Definition
domain.dns
Term
True or False: The first entry in any DNS file must be an SOA record.
Definition
TRUE
Term
The records in the _____ file are provided to support reverse DNS lookups.
Definition
db.addr
Term
True or False: DNS response packets include the original question as well as the reply.
Definition
TRUE
Term
The two-byte _____ field is used to associate DNS queries with their responses.
Definition
ID Number
Term
The _____ field is used in DNS responses to indicate if any errors occured.
Definition
R code
Term
True or False: Active Directory automates what a DNS administrator would have to do manually otherwise.
Definition
TRUE
Term
The _____ utility is a command-line utility that uses ICMP Echo packets to test router and link latency, as well as packet loss.
Definition
Path Ping
Term
_____ enables a source to learn the currently supported MTU across an entire path, without requiring fragmentation.
Definition
PMTU
Term
ICMP packets contain only three required fields after the header: Type, Code, and _____.
Definition
Checksum
Term
The _____ field identifies types of ICMP messages that can be sent on the network.
Definition
Type
Term
True or False: The Code field provides error detection for the ICMP header only.
Definition
False
Term
ICMP Type _____ is used for Echo Reply packets.
Definition
0 (zero)
Term
True or False:  Garrick is a douche
Definition
TRUE