Pregunta 1
Pregunta
What transport protocol is used by DHCP?
Pregunta 2
Pregunta
What does ARP map an IP address to?
Respuesta
-
the gateway address
-
A NetBIOS name
-
the MAC address
-
A DNS name
Pregunta 3
Pregunta
What command you use in Linux to start DHCP service?
Respuesta
-
services dhcp start
-
services dhcpd start
-
service dhcp start
-
service dhcpd start
Pregunta 4
Pregunta
A DHCP _____________ acts as a proxy for a DHCP server.
Respuesta
-
Relay Agent
-
Register
-
Resource Record
-
Client
Pregunta 5
Pregunta
From MS Windows command line, a client's DHCP lease can be manually renewed with the _______________ command.
Respuesta
-
ipconfig /refresh
-
ifconfig /renew
-
ipconfig /renew
-
ifconfig /refresh
Pregunta 6
Pregunta
After 100% of the lease time elapsed without a renewal, the DHCP client will send out a ______________ packet on the network.
Respuesta
-
DHCPAck
-
DHCPRequest
-
DHCPDiscover
-
DHCPRequest Broadcast
Pregunta 7
Pregunta
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 _____.
Respuesta
-
AIP
-
Relay Agent
-
DHCPFind
-
APIPA
Pregunta 8
Pregunta
To communicate across an Ethernet network, your computer must use its _____ bytes physical addresses.
Pregunta 9
Pregunta
In Linux, what file should you consult to check what leases had been given out from the Linux DHCP server?
Pregunta 10
Pregunta
What is the name of the configuration file for DHCP in Linux?
Respuesta
-
/etc/dhcp/dhcpd.conf
-
/var/lib/dhcpd.conf
-
/usr/sbin/dhcpd.conf
-
/etc/dhcp.config
Pregunta 11
Pregunta
What command line utility is built into Windows system to query DNS servers?
Respuesta
-
dig
-
DNS active query
-
NSlookup
-
zone
Pregunta 12
Pregunta
Which of the following is considered a DNS alias that points to another host?
Pregunta 13
Pregunta
The DNS query between DNS servers is a/an _________ query.
Respuesta
-
Caching
-
Reverse
-
Recursive
-
Iterative
Pregunta 14
Pregunta
What is the host name in the DNS address cse.ucsc.edu?
Pregunta 15
Pregunta
Which two records are created by default in a standard primary Forward DNS zone in a DNS server? (Negative marks for incorrect answer)
Respuesta
-
SOA (Start of Authority)
-
NS (Name Server)
-
PTR (Pointer Record)
-
Host (Address)
Pregunta 16
Pregunta
The root domain in DNS is represented by a:
Pregunta 17
Pregunta
An organization responsible for a domain may divide it into subdomain to decentralize administration.
Pregunta 18
Pregunta
What command line utility is added to Linux based systems to query DNS servers?
Respuesta
-
zone
-
DNS active query
-
NSilookup
-
dig
Pregunta 19
Pregunta
When will a WINS client register itself with the WINS server?
Respuesta
-
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.
Pregunta 20
Pregunta
You will find NetBIOS names most likely in what type of network environment?
Respuesta
-
All Ethernet networks
-
All TCP/IP networks
-
Any network
-
A Microsoft network
Pregunta 21
Pregunta
To avoid causing extra DNS traffic, increase security and save processing time you can add a static entry to your ___________.
Respuesta
-
ARP cache
-
WINS Configuration
-
Hosts file
-
LMHosts file
Pregunta 22
Pregunta
When a DNS zone information is copied to a slave or secondary DNS server, this is referred to as which of the following process?
Respuesta
-
host transfer
-
zone transfer
-
static transfer
-
Master transfer
Pregunta 23
Pregunta
Which of the following command/utilities can be used to clear the NetBIOS cache on a WINS system?
Respuesta
-
net use
-
nbtstat
-
ipconfig
-
net view
Pregunta 24
Pregunta
What command would you use from the command line to start the DNS daemon in Linux system (ex: CentOS)?
Respuesta
-
service named start
-
service dnsd start
-
service bind start
-
service dns start
Pregunta 25
Pregunta
Which DNS resource records are required to locate servers running specific services?
Respuesta
-
MX Records
-
NS Records
-
Host Records
-
SRV Records
Pregunta 26
Pregunta
What is the configuration file for DNS in Linux?
Respuesta
-
/etc/named.conf
-
/etc/dnsd.conf
-
/etc/bind.conf
-
/etc/dns.conf
Pregunta 27
Pregunta
DNS Stands for….
Pregunta 28
Pregunta
If the DNS server does not support ___________, then an administrator must create the host record entries manually.
Pregunta 29
Pregunta
Reverse DNS zones are created within the ______________ domain.
Respuesta
-
in-addr.rev
-
rev-addr.arpa
-
addr.rev
-
in-addr.arpa
Pregunta 30
Pregunta
Like other services DNS consists of a client and a server service. The terminology used for the client is called ______.
Respuesta
-
Slave
-
Forwarder
-
Resolver
-
Master
Pregunta 31
Pregunta
Match the followings;
Primary DNS or Master
Respuesta
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Pregunta 32
Pregunta
Match the followings;
Cache only server
Respuesta
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Pregunta 33
Pregunta
Match the followings;
Secondary DNS or Slave
Respuesta
-
Authoritative for the domain
-
gets data for its zone from authoritative server through zone transfer
-
only perform queries and all queries have a TTL
Pregunta 34
Pregunta
Match the definition with its DNS resource record name,
TXT
Respuesta
-
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
Pregunta 35
Pregunta
Match the definition with its DNS resource record name:
MX
Respuesta
-
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
Pregunta 36
Pregunta
Match the definition with its DNS resource record name:
NS
Respuesta
-
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
Pregunta 37
Pregunta
Match the definition with its DNS resource record name:
PTR
Respuesta
-
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
Pregunta 38
Pregunta
Match the definition with its DNS resource record name:
A
Respuesta
-
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
Pregunta 39
Pregunta
Match the definition with its DNS resource record name
CNAME
Respuesta
-
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
Pregunta 40
Pregunta
Match the definition with its DNS resource record name:
SOA
Respuesta
-
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
Pregunta 41
Pregunta
Match the definition with its DNS resource record name:
HINFO
Respuesta
-
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