Questão 1
Questão
What transport protocol is used by DHCP?
Questão 2
Questão
What does ARP map an IP address to?
Responda
-
the gateway address
-
A NetBIOS name
-
the MAC address
-
A DNS name
Questão 3
Questão
What command you use in Linux to start DHCP service?
Responda
-
services dhcp start
-
services dhcpd start
-
service dhcp start
-
service dhcpd start
Questão 4
Questão
A DHCP _____________ acts as a proxy for a DHCP server.
Responda
-
Relay Agent
-
Register
-
Resource Record
-
Client
Questão 5
Questão
From MS Windows command line, a client's DHCP lease can be manually renewed with the _______________ command.
Responda
-
ipconfig /refresh
-
ifconfig /renew
-
ipconfig /renew
-
ifconfig /refresh
Questão 6
Questão
After 100% of the lease time elapsed without a renewal, the DHCP client will send out a ______________ packet on the network.
Responda
-
DHCPAck
-
DHCPRequest
-
DHCPDiscover
-
DHCPRequest Broadcast
Questão 7
Questão
Sometimes a client cannot find a DHCP server though it issued a DHCPDiscover packet. When this happens to clients that had no previous lease, Windows clients implement _____.
Responda
-
AIP
-
Relay Agent
-
DHCPFind
-
APIPA
Questão 8
Questão
To communicate across an Ethernet network, your computer must use its _____ bytes physical addresses.
Questão 9
Questão
In Linux, what file should you consult to check what leases had been given out from the Linux DHCP server?
Questão 10
Questão
What is the name of the configuration file for DHCP in Linux?
Responda
-
/etc/dhcp/dhcpd.conf
-
/var/lib/dhcpd.conf
-
/usr/sbin/dhcpd.conf
-
/etc/dhcp.config
Questão 11
Questão
What command line utility is built into Windows system to query DNS servers?
Responda
-
dig
-
DNS active query
-
NSlookup
-
zone
Questão 12
Questão
Which of the following is considered a DNS alias that points to another host?
Questão 13
Questão
The DNS query between DNS servers is a/an _________ query.
Responda
-
Caching
-
Reverse
-
Recursive
-
Iterative
Questão 14
Questão
What is the host name in the DNS address cse.ucsc.edu?
Questão 15
Questão
Which two records are created by default in a standard primary Forward DNS zone in a DNS server? (Negative marks for incorrect answer)
Responda
-
SOA (Start of Authority)
-
NS (Name Server)
-
PTR (Pointer Record)
-
Host (Address)
Questão 16
Questão
The root domain in DNS is represented by a:
Questão 17
Questão
An organization responsible for a domain may divide it into subdomain to decentralize administration.
Questão 18
Questão
What command line utility is added to Linux based systems to query DNS servers?
Responda
-
zone
-
DNS active query
-
NSilookup
-
dig
Questão 19
Questão
When will a WINS client register itself with the WINS server?
Responda
-
When the clients cache is cleared.
-
When the client is shut down.
-
When the client attempts to connect to a share.
-
When the client is started up.
Questão 20
Questão
You will find NetBIOS names most likely in what type of network environment?
Responda
-
All Ethernet networks
-
All TCP/IP networks
-
Any network
-
A Microsoft network
Questão 21
Questão
To avoid causing extra DNS traffic, increase security and save processing time you can add a static entry to your ___________.
Responda
-
ARP cache
-
WINS Configuration
-
Hosts file
-
LMHosts file
Questão 22
Questão
When a DNS zone information is copied to a slave or secondary DNS server, this is referred to as which of the following process?
Responda
-
host transfer
-
zone transfer
-
static transfer
-
Master transfer
Questão 23
Questão
Which of the following command/utilities can be used to clear the NetBIOS cache on a WINS system?
Responda
-
net use
-
nbtstat
-
ipconfig
-
net view
Questão 24
Questão
What command would you use from the command line to start the DNS daemon in Linux system (ex: CentOS)?
Responda
-
service named start
-
service dnsd start
-
service bind start
-
service dns start
Questão 25
Questão
Which DNS resource records are required to locate servers running specific services?
Responda
-
MX Records
-
NS Records
-
Host Records
-
SRV Records
Questão 26
Questão
What is the configuration file for DNS in Linux?
Responda
-
/etc/named.conf
-
/etc/dnsd.conf
-
/etc/bind.conf
-
/etc/dns.conf
Questão 27
Questão 28
Questão
If the DNS server does not support ___________, then an administrator must create the host record entries manually.
Questão 29
Questão
Reverse DNS zones are created within the ______________ domain.
Responda
-
in-addr.rev
-
rev-addr.arpa
-
addr.rev
-
in-addr.arpa
Questão 30
Questão
Like other services DNS consists of a client and a server service. The terminology used for the client is called ______.
Responda
-
Slave
-
Forwarder
-
Resolver
-
Master
Questão 31
Questão
Match the followings;
Primary DNS or Master
Responda
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Questão 32
Questão
Match the followings;
Cache only server
Responda
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Questão 33
Questão
Match the followings;
Secondary DNS or Slave
Responda
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Questão 34
Questão
Match the definition with its DNS resource record name,
TXT
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 35
Questão
Match the definition with its DNS resource record name:
MX
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 36
Questão
Match the definition with its DNS resource record name:
NS
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 37
Questão
Match the definition with its DNS resource record name:
PTR
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 38
Questão
Match the definition with its DNS resource record name:
A
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 39
Questão
Match the definition with its DNS resource record name
CNAME
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 40
Questão
Match the definition with its DNS resource record name:
SOA
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person
Questão 41
Questão
Match the definition with its DNS resource record name:
HINFO
Responda
-
comments
-
Hostname to IP mapping
-
IP address of SMTP host
-
alias for an IP with an existing A record
-
lists authoritative DNS servers for zone
-
OS type
-
IP to host lookup
-
keeps info such as TTLs, serial number, e-mail and responsible person