98-366 Online Practice Questions and Answers

Correct Answer:

Correct Answer: D

Class A default subnet mask is 255.0.0.0. Class B default subnet mask is 255.255.0.0. Class C default subnet mask is 255.255.255.0.

Correct Answer: B

Insecure Wi-Fi is the easiest way for people to access your home network, leech your internet, and cause you serious headaches with more malicious behavior.

Correct Answer: E

Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, let's break mail.google.com into its component parts:

mail is the host or local hostname; and google.com is the domain or parent domain name.

Correct Answer: D

A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet.

Correct Answer: C

The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical configuration, a local network uses one of the designated "private" IP address subnets (RFC 1918). A router on that network has a private address in that address space. The router is also connected to the Internet with a "public" address assigned by an Internet service provider.

Correct Answer: CD

C: A mechanical splice is a junction of two or more optical fibers that are aligned and held in place by a self-contained assembly (usually the size of a large carpenter's nail).[1] The fibers are not permanently joined, just precisely held together so that light can pass from one to another.

D: Modern connectors typically use a "physical contact" polish on the fiber and ferrule end. This is a slightly convex surface with the apex of the curve accurately centered on the fiber, so that when the connectors are mated the fiber cores come into direct contact with one another.

Note: Optical fiber connectors are used to join optical fibers where a connect/disconnect capability is required. Due to the polishing and tuning procedures that may be incorporated into optical connector manufacturing, connectors are generally assembled onto optical fiber in a supplier's manufacturing facility.

Correct Answer: A

When a zone that this DNS server hosts is a primary zone, the DNS server is the primary source for information about this zone, and it stores the master copy of zone data in a local file or in AD DS.

Correct Answer: D

A single layer-2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them via one or more routers; such a domain is referred to as a virtual local area

network, virtual LAN or VLAN.

LANs are layer 2 constructs, so they can be supported by both Layer 2 and Layer 3 switches.

Incorrect:

Not A: Layer 2 switches do not provide high level of security.

Not B: Another name for logical address is IP address. Only Layer 3 switches uses IP address. Layer 2 switches uses MAC addresses.

Not C: only Layer 3 switches forward packets on the network (like routers).

Correct Answer: A