When a router can’t determine a path to a message’s destination, where does it send the message?
a.
Default route
b.
Default gateway
c.
Gateway of last resort
d.
Routing table
Definition
c. Gateway of last resort
Term
By default, the pathping command sends how many pings per hop?
a.
b.
c.
d.
Definition
c. 100
Term
What type of device does a computer turn to first when attempting to make contact with a host on another network?
a.
Default gateway
b.
Root server
c.
DNS server
d.
DHCP server
Definition
a. Default gateway
Term
What computers are the highest authorities in the Domain Name System hierarchy?
a.
Primary DNS server
b.
Authoritative name servers
c.
Top-level domain servers
d.
Root servers
Definition
d. Root servers
Term
What version of SMB can be used across Windows, UNIX, and other operating systems?
a.
CIFS (Common Internet File System)
b.
MGCP (Media Gateway Control Protocol)
c.
RDP (Remote Desktop Protocol)
d.
SIP (Session Initiation Protocol)
Definition
a. CIFS (Common Internet File System)
Term
A ___________ is a DNS client that requests information from DNS name servers.
Definition
resolver
Term
The Network layer header identifies sending and receiving hosts by their _________________.
Definition
IP Addresses
Term
___________ is an unsecured client server application / protocol that transfers files between two computers.
Definition
FTP
Term
The IP addresses 169.254.0.1 and 169.254.255.254 are both examples of ___________________.
Definition
Automatic Private IP Addressing (APIPA)
Term
The receiving host de-encapsulates the message at each layer in _______ order and then presents the payload to the receiving application.
Definition
reverse
Term
In IPv6, what field is used to indicate what sequence of packets from one source to one or multiple destinations a packet belongs to?
a.
b.
c.
d.
Definition
d. flow label
Term
When messages to a remote Web server are being lost for no apparent reason and you suspect the problem might be a path MTU black hole, which TCP/IP utility can you use to diagnose the problem?
a.
nbtstat
b.
ping
c.
traceroute
d.
netstat
Definition
b. ping
Term
What netstat command option lists only current connections, including IP addresses and port numbers?
a.
b.
c.
d.
Definition
d. -n
Term
A ______________ consists of a host's IP address and the port number of an application running on a host, with a colon separating the two values.
Definition
socket
Term
Which statement actually describes SMTP?
a.
SMTP is a connectionless protocol that uses UDP
b.
SMTP is a connection-based protocol that uses TCP
c.
SMTP is a connection-based protocol that uses UDP
d.
SMTP is a connectionless protocol that uses TCP
Definition
b. SMTP is a connection-based protocol that uses TCP
Term
Voice and video transmissions are _______________, meaning you don't want to hear breaks in your conversation or see a buffering message when you watch a movie over the Internet.
Definition
delay-sensitive
Term
What mail protocol is used to send mail messages to a server?
a.
b.
c.
d.
Definition
SMTP
Term
Static electricity can cause what two types of damage in electronic components?
:
a.
b.
c.
d.
Definition
upset failure and catastrophic failure
Term
The segment or datagram protocol data unit exists at what layer of the OSI model?
a.
b.
c.
d.
Definition
transport layer
Term
What protocol is commonly used to request configuration files from another computer?
a.
b.
c.
d.
Definition
TFTP
Term
What two ipconfig commands below are used to show DNS resolver cache information and clear the name resolver cache?
a.
b.
c.
d.
Definition
flush and display
Term
Which part of a MAC address is unique to each manufacturer?
a.
The network identifier
b.
The OUI
c.
The device identifier
d.
The physical address
Definition
the OUI
Term
What RFC outlines recommendations for private IP addresses?
a.
b.
c.
d.
Definition
RFC 1918
Term
Which protocol’s header would a Layer 4 device read and process?
a.
ARP
b.
IP
c.
HTTP
d.
TCP
Definition
TCP
Term
Which layers of the OSI model are all routers able to interpret?
a.
b.
c.
d.
Definition
3 and 4
Term
What is the name for a client-server model with one server and many clients, such as when an application is used to watch a live sports event?
a.
b.
c.
d.
Definition
d. multicast distribution
Term
A routing protocol’s reliability and priority are rated by what measurement?
