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Networking Essentials Flashcards
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1
Question
One advantage of dynamic routing is that it:
Page 2
Answer
Automatically maintains routing tables.
2
Question
What is dynamic routing also known as?
Page 2
Answer
Adaptive routing
3
Question
What is the goal of adaptation in dynamic routing?
Page 2
Answer
Allow as many routes as possible to remain valid
4
Question
Which of the following represents a valid MAC address?
Page 2
Answer
05:35:AB:6E:Al:25
5
Question
What is the standard format for printing MAC-48 addresses?
Page 3
Answer
Six groups of two hexadecimal digits, separated by hyphens or colons
6
Question
What does the IEEE 802 standard specify for MAC addresses?
Page 3
Answer
Transmission order for the address groups
7
Question
Connecting to a private network address from a public network requires:
Page 3
Answer
Network address translation (NAT)
8
Question
What do most NATs map multiple private hosts to?
Page 3
Answer
One publicly exposed IP address
9
Question
What IP address subnets are designated for private networks per RFC 1918?
Page 3
Answer
One of the private IP address subnets
10
Question
What is the role of a router in a typical NAT configuration?
Page 3
Answer
Has a private address internally and public address to the Internet
11
Question
A network device that associates a MAC address with a port is a:
Page 4
Answer
Switch
12
Question
How does a switch begin learning MAC addresses?
Page 4
Answer
As soon as it is connected to other devices or network
13
Question
In the switch learning process, what does the switch capture from a frame?
Page 4
Answer
Source MAC address and the interface that received it
14
Question
What does a switch do with the captured MAC address and port?
Page 4
Answer
Confirms or adds to the lookup table
15
Question
A Layer 2 device that connects multiple computers within a network is a:
Page 4
Answer
Switch
16
Question
What does Layer 2 switching use to forward frames?
Page 4
Answer
Media access control address (MAC address) from NICs
17
Question
A cable that meets the 1000BaseT standard has a maximum length of:
Page 4
Answer
100 m
18
Question
What is the maximum length for Cat 6 cable in 10/100/1000BASE-T?
Page 4
Answer
100 meters or 328 feet
19
Question
A router's static route is set by the:
Page 4
Answer
Network administrator
20
Question
What is static routing?
Page 5
Answer
Manually-configured routing entry, not from dynamic protocol
21
Question
Which setting is used to determine the DNS settings on a client computer?
Page 5
Answer
NSLOOKUP
22
Question
What is nslookup used for?
Page 5
Answer
Querying DNS for domain name or IP address mapping
23
Question
The default subnet mask for a Class B network is:
Page 5
Answer
255.255.0.0
24
Question
What is the default subnet mask for Class A?
Page 5
Answer
255.0.0.0
25
Question
What is the default subnet mask for Class C?
Page 5
Answer
255.255.255.0
26
Question
The default port used for SMTP is:
Page 6
Answer
25
27
Question
What protocol does SMTP use by default?
Page 6
Answer
TCP port 25
28
Question
The ping tool is used to: (Choose two.)
Page 6
Answer
Self-test a host's own network interface; Determine whether a host is reachable
29
Question
What does ping measure?
Page 6
Answer
Round-trip time for messages to a destination
30
Question
How do you ping your own PC?
Page 6
Answer
Type ping 127.0.0.1