問題一覧
1
The notation used to perform variable-length subnet asking for IP addresses is CIDR.
True
2
The name you type into a browser’s address bar, such as www.microsoft.com, is known as the IP locator.
False
3
The IP command-line command to determine your computer’s IP address, subnet mask, and default gateway is ping.
False
4
The IP command-line command to determine the number of hops. It takes to get from your computer to its destination is ping.
True
5
No protocols operate at the physical layer of the OSI model.
True
6
The session layer of the OSI model provides the mechanism to manage the dialogue between end-user application processes.
False
7
The TCP protocol works at the network layer of the OSI model.
False
8
MAC addresses are unique addresses for each NIC.
True
9
The first four bytes of the MAC address identify the vendor.
False
10
A host is a machine with data on it, which you can connect.
True
11
Unshielded twisted-pair cables capable with a specification of 100MHz/100 Mbps is also called Category _____.
5
12
Which device can connect many computers and sends packets out every port?
Hub
13
Which device is used to boost a signal?
Repeater
14
Which device can connect many computers and sends data only out of one port based on MAC address?
Switch
15
Which device can relay packets from one network to another and is usually programmable?
Router
16
Which TCP/IP protocol operates on port 53 using UDP and translates URLs into Web addresses?
DNS
17
Which TCP/IP protocol operates on ports 20 and 21 and is used for transferring files between computers?
FTP
18
Which TCP/IP protocol operates on port 80 and displays web pages?
HTTP
19
Which TCP/IP protocol operates on port 25 and sends email?
SMTP
20
A(n) _____ hides the internal network’s IP address and presents a single IP address to the outside world.
Proxy server
21
An IP version 4 address consists of four numbers, separated by dots. Each number is called a(n)_____.
Octet
22
If an IP address has the number 194 in the first octet, it is a class _____ address.
C
23
If an IP address has the number 191 in the first octet, it is a class ______ address.
B
24
What is the binary equivalent of the decimal number 240?
11110000
25
The IP utility used to test connectivity with a remote host is ______.
ping