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Flashcards in Chapter 3 Review Deck (10)
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1

Which type of DNS record identifies an email server?

A. CNAME record
B. MX record
C. PTR record
D. AAAA record

MX Record

2

What type of device does a computer turn to first when attempting to make contact with a host with a known IP address on another network?

A. DNS server
B. Root server
C. Default gateway
D. DHCP server

Default Gateway

3

Which of these commands is available only in Linux?

A. dig
B. ipconfig
C. ping
D. nslookup

Dig

4

If you are connected to a network that uses DHCP, and you need to terminate your Windows workstation’s DHCP lease, which command would you use?

A. ipconfig /renew
B. ipconfig /release
C. ifconfig /renew
D. ifconfig /release

ipconfig /release

5

Which computers are the highest authorities in the Domain Name System hierarchy?

A. Authoritative name servers
B. Top-level domain servers
C. Primary DNS servers
D. Root servers

Root servers

6

Suppose you send data to the 11111111 11111111 11111111 11111111 IP address on an IPv4 network. To which device(s) are you transmitting?

All devices on your local network

7

What decimal number corresponds to the binary number 11111111?

A. 255
B. 11,111,111
C. 256
D. 127

255

8

Which part of a MAC address is unique to each manufacturer?

A. The physical address
B. The network identifier
C. The OUI
D. The device identifier

The OUI

9

When your computer first joins an IPv6 network, what is the prefix of the IPv6 address the computer first configures for itself?

A. 2001::/3
B. FF00::/8
C. FE80::/10
D. 2001::/64

FE80::/10

10

You have just brought online a new secondary DNS server and notice your network-monitoring software reports a significant increase in network traffic. Which two hosts on your network are likely to be causing the increased traffic and why?

A. The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server

B. The caching and primary DNS servers, because the caching server is requesting zone transfers from the primary server

C. The web server and primary DNS server, because the web server is requesting zone transfers from the primary DNS server

D. The root and primary DNS servers, because the primary server is requesting zone transfers from the root server

The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server